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Qualitative Evaluation (qualitative + evaluation)
Selected AbstractsEffective Interaction With Patients With Schizophrenia: Qualitative Evaluation of the Interaction Skills Training ProgrammePERSPECTIVES IN PSYCHIATRIC CARE, Issue 4 2009Berno Van Meijel RN PURPOSE., The purpose of this study was to describe experiences of caregivers with the Interaction Skills Training Programme, and to evaluate the training effects observed by caregivers. DESIGN AND METHODS., A qualitative research design was applied. Semistructured interviews were conducted with 17 caregivers who had followed the training program. FINDINGS., The research findings clearly confirm the value of the program. Positive effects of the training were reported in terms of: (a) awareness and insightfulness; (b) the attitude of caregivers; (c) the quality of the therapeutic alliance; and (d) job perception. PRACTICE IMPLICATIONS., Training interactive skills may contribute to a better quality of care for chronic psychiatric patients. Based on the qualitative study, implementation of the skills training program can be recommended. [source] Monitoring of DNA breakage in embryonic stages of the African catfish Clarias gariepinus (Burchell, 1822) after exposure to lead nitrate using alkaline comet assayENVIRONMENTAL TOXICOLOGY, Issue 6 2008Alaa G. M. Osman Abstract Increasing lead contamination in Egyptian ecosystems and high lead concentrations in food items have raised concern for human health and stimulated studies on monitoring ecotoxicological impact of lead-caused genotoxicity. In this work, the alkaline comet assay was modified for monitoring DNA strand breakage in sensitive early life stages of the African catfish Clarias gariepinus. Following exposure to 100, 300, and 500 ,g/L lead nitrate, DNA strand breakage was quantified in embryos at 30, 48, 96, 144, and 168 h post-fertilization (PFS). For quantitative analysis, four commonly used parameters (tail % DNA, %TDNA; head % DNA, %HDNA; tail length, TL; tail moment, TM) were analyzed in 96 nuclei (in triplicates) at each sampling point. The parameter %TDNA revealed highest resolution and lowest variation. A strong correlation between lead concentration, time of exposure, and DNA strand breakage was observed. Here, genotoxicity detected by comet assay preceded the manifested malformations assessed with conventional histology. Qualitative evaluation was carried out using five categories are as follows: undamaged (%TDNA , 10%), low damaged (10% < %TDNA , 25%), median damaged (25 < %TDNA , 50%), highly damaged (50 < %TDNA , 75%), and extremely damaged (%TDNA > 75%) nuclei confirming a dose and time-dependent shift towards increased frequencies of highly and extremely damaged nuclei. A protective capacity provided by a hardened chorion is a an interesting finding in this study as DNA damage in the prehatching stages 30 h-PFS and 48 h-PFS was low in all treatments (qualitative and quantitative analyses). These results clearly show that the comet assay is a sensitive tool for the detection of genotoxicity in vulnerable early life stages of the African catfish and is a method more sensitive than histological parameters for monitoring genotoxic effects. © 2008 Wiley Periodicals, Inc. Environ Toxicol, 2008. [source] Diffusion-weighted imaging of the liver: Comparison of navigator triggered and breathhold acquisitionsJOURNAL OF MAGNETIC RESONANCE IMAGING, Issue 3 2009Bachir Taouli MD Abstract Purpose To compare a free breathing navigator triggered single shot echoplanar imaging (SS EPI) diffusion-weighted imaging (DWI) sequence with prospective acquisition correction (PACE) with a breathhold (BH) DWI sequence for liver imaging. Materials and Methods Thirty-four patients were evaluated with PACE-DWI and BH DWI of the liver using b-values of 0, 50, and 500 s/mm2. There were 29 focal liver lesions in 18 patients. Qualitative evaluation was performed on a 3-point scale (1,3) by two independent observers (maximum score 9). Quantitative evaluation included estimated SNR (signal to noise ratio), lesion-to-liver contrast ratio, liver and lesion apparent diffusion coefficients (ADCs), and coefficient of variation (CV) of ADC in liver parenchyma and focal liver lesions (estimate of noise contamination in ADC). Results PACE-DWI showed significantly better image quality, higher SNR and lesion-to-liver contrast ratio when compared with BH DWI. ADCs of liver and focal lesions with both sequences were significantly correlated (r = 0.838 for liver parenchyma, and 0.904 for lesions, P < 0.0001), but lower with the BH sequence (P < 0.02). There was higher noise contamination in ADC measurement obtained with BH DWI (with a significantly higher SD and CV of ADC). Conclusion The use of a navigator echo to trigger SS EPI DWI improves image quality and liver to lesion contrast, and enables a more precise ADC quantification compared with BH DWI acquisition. J. Magn. Reson. Imaging 2009;30:561,568. © 2009 Wiley-Liss, Inc. [source] Sliding multislice MRI for abdominal staging of patients with pelvic malignancies: A pilot studyJOURNAL OF MAGNETIC RESONANCE IMAGING, Issue 3 2008Gregor Sommer MS Abstract Purpose To integrate SMS (sliding multislice imaging technique for acquiring axial images during continuous table motion) into a high-resolution pelvic MRI protocol for additional staging of the entire abdomen within one examination. Materials and Methods Axial two-dimensional images were acquired during continuous table motion using a fat-saturated contrast-enhanced T1-weighted gradient echo sequence. Patients held their breath during the first 20 s of the examination and breathed normally afterward while data acquisition continued. Measurement parameters were adjusted to optimize image quality throughout the total field of view. The method was investigated in 22 patients with pelvic malignancies. Two readers independently compared SMS image quality to conventional abdominal MR images, generated by a stationary multi-breath-hold gradient echo sequence. Results Qualitative evaluation yielded high diagnostic value of SMS data in body regions with no or minor breathing motion, and in those acquired during the initial breath-hold. Image quality in the upper abdomen, retroperitoneum, and pelvis is reproducible and equivalent to stationary MRI. Interfering artifacts are related to the intestine in the mid-abdomen. Conclusion SMS is a promising technique that may have the potential for a first-line abdominal staging tool in patients with pelvic malignancies. J. Magn. Reson. Imaging 2008;27:666,672. © 2008 Wiley-Liss, Inc. [source] Tissue Distribution, Autoradiography, and Metabolism of 4-(2,-Methoxyphenyl)-1-[2, -[N -2,-Pyridinyl)- p -[18F]Fluorobenzamido]ethyl]piperazine (p -[18F]MPPF), a New Serotonin 5-HT1A Antagonist for Positron Emission TomographyJOURNAL OF NEUROCHEMISTRY, Issue 2 2000An In Vivo Study in Rats The in vivo behavior of 4-(2,-methoxyphenyl)-1-[2,-[N -(2,-pyridinyl)- p -[18F]fluorobenzamido]ethyl]-piperazine (p -[18F]MPPF), a new serotonin 5-HT1A antagonist, was studied in awake, freely moving rats. Biodistribution studies showed that the carbon-fluorine bond was stable in vivo, that this compound was able to cross the blood-brain barrier, and that a general diffusion equilibrium could account for the availability of the tracer. The great quantity of highly polar metabolites found in plasma did not contribute to the small amounts of metabolites found in hippocampus, frontal cortex, and cerebellum. Exvivo p -[18F]MPPF and in vitro 8-hydroxy-2-(di- n -[3H]propylamino)tetralin autoradiography were compared both qualitatively and quantitatively. Qualitative evaluation proved that the same brain regions were labeled and that the p -[18F]MPPF labeling is (a) in total agreement with the known distribution of 5-HT1A receptors in rats and (b) characterized by very low nonspecific binding. Quantitative comparison demonstrated that the in vivo labeling pattern obtained with p -[18F]MPPF cannot be explained by differences in regional blood flow, capillary density, or permeability. The 5-HT1A specificity of p -[18F]MPPF and binding reversibility were confirmed in vivo with displacement experiments. Thus, this compound can be used to evaluate parameters characterizing 5-HT1A binding sites in the brain. [source] Australian food regulations public consultation process: Teaching postgraduate dietetics students to participateNUTRITION & DIETETICS, Issue 2-3 2005Shawn Somerset Abstract Objective:, To assess a teaching strategy to develop competency, familiarity and willingness of dietetic students to participate in food regulation development. Design:, Qualitative evaluation of self-perceived learning outcomes. Subjects/Setting:, Two consecutive cohorts (n = 39) of postgraduate dietetics students from Griffith University. Intervention:, Preparation and presentation of a formal response to a call for comment by Australia's food regulatory body (Food Standards Australia New Zealand) during the period 1999,2001. Main outcome measures:, Self-reported descriptions of confidence, familiarity and willingness to participate in the public consultation process. Results:, Following the assignment, students generally reported being more familiar with the regulatory process and more confident to participate. Most students identified the importance of reference material on Food Standards Australia New Zealand procedures that they could use for review should the opportunity for participation arise at a later date. A major issue identified was the potential for cynicism towards the process. This issue was seen as a potential barrier to participation by students after graduation. Applications/Conclusions:, This issues-based approach to teaching of a food regulation system has potential to enhance participation in regulatory development by a broader cross-section of dietitians. [source] Candidate's Thesis: Direct Evidence of Bacterial Biofilms in Otitis Media,THE LARYNGOSCOPE, Issue 12 2001J. Christopher Post MD Abstract Objectives/Hypothesis Bacteriologic studies of otitis media with effusion (OME) using highly sensitive techniques of molecular biology such as the polymerase chain reaction have demonstrated that traditional culturing methods are inadequate to detect many viable bacteria present in OME. The presence of pathogens attached to the middle-ear mucosa as a bacterial biofilm, rather than as free-floating organisms in a middle-ear effusion, has previously been suggested to explain these observations. The suggestion has been speculative, however, because no visual evidence of such biofilms on middle-ear mucosa has heretofore been collected. The hypotheses motivating the current study were: 1) biofilms of nontypable Hemophilus influenzae will form on the middle-ear mucosa of chinchillas in an experimental model of OME, 2) these biofilms will exhibit changes in density or structure over time, and 3) biofilms are also present on tympanostomy tubes in children with refractory post-tympanostomy otorrhea. The objective of this study was to collect visual evidence of the formation of bacterial biofilms in these situations. Study Design Laboratory study of bacteriology in an animal model and on medical devices removed from pediatric patients. Methods Experimental otitis media was induced in chinchillas by transbullar injection of nontypable H. influenzae. Animals were killed in a time series and the surface of the middle-ear mucosa was examined by scanning electron microscopy (SEM) for the presence of bacterial biofilms. Adult and fetal chinchilla uninfected controls were similarly examined for comparison. In addition, tympanostomy tubes that had been placed in children's ears to treat OME and removed after onset of refractory otorrhea or other problems were examined by SEM and by confocal scanning laser microscopy for bacterial biofilms, and compared with unused control tubes. Results Bacterial biofilms were visually detected by SEM on the middle-ear mucosa of multiple chinchillas in which H. influenzae otitis media had been induced. Qualitative evaluation indicated that the density and thickness of the biofilm might increase until at least 96 hours after injection. The appearance of the middle-ear mucosa of experimental animals contrasted with that of uninjected control animals. Robust bacterial biofilms were also visually detected on tympanostomy tubes removed from children's ears for clinical reasons, in contrast with unused control tubes. Conclusions Bacterial biofilms form on the middle-ear mucosa of chinchillas in experimentally induced H. influenzae otitis media and can form on tympanostomy tubes placed in children's ears. Such biofilms can be directly observed by microscopy. These results reinforce the hypothesis that the bacterial aggregates called biofilms, resistant to treatment by antibiotics and to detection by standard culture techniques, may play a major etiologic role in OME and in one of its frequent complications, post-tympanostomy otorrhea. [source] Groundwater Systems and Eco-hydrological Features in the Main Karst Regions of ChinaACTA GEOLOGICA SINICA (ENGLISH EDITION), Issue 5 2006LU Yaoru Abstract: Different karst water features and related water resources are present both in southern and northern China. There are over 3,358 well-developed karst ground river systems with total discharges in the dry season of about 420times108 m3 in the main karst regions in the southern part of China. Exploitation rates are only 8,15%. Over 100 larger karst spring systems in the main karst regions of northern China cover a catchment area from 500 km2 to over 4,000 km2, of which the average discharge appears to be from about 1 m3/s to 13 m3/s and the exploitation rates are 70,80%. Six aspects of the eco-hydrological features of some typical karst regions in China comprising water environment, ecological features, materials and structures between parent rock and soil, bio-geological processes and palynological studies (spore-pollen) are discussed. Qualitative evaluation of eco-geology and rocky desertification in the karst regions should be based on the main karst ecological conditions as well as artificial, i.e., man-made impacts. [source] Comparison of acidic fibroblast growth factor on collagen carrier with calcium hydroxide as pulp capping agents in monkeysDENTAL TRAUMATOLOGY, Issue 5 2007Zhimei Li Abstract,,, Acidic fibroblast growth factor (aFGF) has been shown to facilitate wound healing by stimulating fibroblast proliferation and angiogenesis. It has also been reported to possess a powerful anti-apoptotic function This study compared the histological pulp responses to aFGF on collagen carrier and Ca(OH)2 placed on the mechanically exposed dental pulp in monkeys at two observation periods. Thirty-six teeth with pulp exposures were distributed into three groups according to the capping agents used prior to application of the coronal seal: collagen-based matrix carrier (group 1), aFGF on the collagen-based matrix carrier (group 2) and aqueous calcium hydroxide [Ca(OH)2] paste (group 3). Specimens were harvested at 6 and 13 weeks postoperatively and prepared for hematoxylin and eosin, and Gram staining. Histological qualitative evaluation of pulp responses were performed under the light microscope following criteria modified from Cox et al. (17) and Hu et al. (18). Semi-quantitative analysis was also carried out using Kruskal,Wallis and Mann,Whitney U -tests. There was neither negligible inflammatory infiltrates with no bacteria present in the three groups at both timings, nor was there any significant difference in the soft tissue organization among the three groups at or between the 6- and 13-week observation periods. At 6 weeks, the hard tissue barrier produced by Ca(OH)2 group (1.040 ± 0.089) was significantly more superior than aFGF/collagen carrier group (1.930 ± 0.825) (P = 0.030) as well as collagen carrier group (3.142 ± 1.069, P = 0.018). At 13 weeks, both aFGF/collagen carrier group (1.214 ± 0.485) and the collagen carrier group (1.457 ± 0.814) produced significantly better hard tissue barrier (P = 0.040 and P = 0.017, respectively) than earlier timing. However, these two groups did not induce significantly improved hard tissue barrier compared to that produced by aqueous Ca(OH)2 paste which stimulated matrix secretion in a polar tubular dentin-like pattern. [source] Separation of Escherichia coli 055:B5 lipopolysaccharide and detoxified lipopolysaccharide by high-performance capillary electrophoresisELECTROPHORESIS, Issue 17 2003Nicola Volpi Abstract A rapid, highly sensitive and reproducible high-performance capillary electrophoresis (HPCE) method (electrokinetic chromatography with sodium dodecyl sulfate) is described for the determination of the lipopolysaccharide (LPS) and detoxified LPS (D-LPS), produced by both alkaline treatment in anhydrous conditions and mild acid hydrolysis, from Escherichia coli 055:B5 bacteria. LPS and D-LPS are separated and readily determined within 25 min on an uncoated fused-silica capillary using normal polarity at 20 kV and detection at 200 nm. A linear relationship (correlation coefficient greater than about 0.97) was found for the LPS and the two D-LPS species over a wide range of concentrations, from approximately 120 to 360 ng, with a detection sensitivity less than about 100 ng. Furthermore, HPCE was able to separate several molecular species mainly due to the presence of populations with O -specific polysaccharides of distinct and increasing mean chain lengths. This approach could be of great importance for the quantitative determination of LPS and D-LPS during the purification and preparation processes, also considering the importance of D-LPS in the preparation of human vaccines, and for the qualitative evaluation of the heterogeneity of LPS and the O -polysaccharide components. [source] Evaluation of the KA24 (Knowledge Access 24) service for health and social care staff in London and the south-east of England.HEALTH INFORMATION & LIBRARIES JOURNAL, Issue 3 2006Part 2: qualitative Aims and objectives:, The aim of this two-part paper is to identify the main transferable lessons learned from both the quantitative and qualitative evaluations of the KA24 (Knowledge Access 24) service of online databases and selected full-text journals for health and social care staff in London and the south-east of England. The objectives of the qualitative evaluation were to assess the enablers and barriers to usage, and to assess the impact of the service on patient care. Methods:, Telephone interviews (n = 65) and a questionnaire survey (n = 296) were conducted with various types of user, in various Trust settings. Some non-users were also contacted. Selection of interviewees and questionnaire recipients was not random, and aimed to cover all groups of users representatively. Results:, Results show that policy goals were being delivered, with indications of changes to clinical practice, and improved clinical governance. Promotion, training and support needs to be extensive, and tailored to needs, but users are not always aware they need training. The sharing of passwords cast doubts on the reliability of some usage data. Conclusions:, Digital health library services, delivered at the point of care, are changing the way some clinicians practise. A combination of qualitative and quantitative evaluation methods are needed to assess digital library services. [source] Meta-analysis of functional imaging data using replicator dynamicsHUMAN BRAIN MAPPING, Issue 1 2005Jane Neumann Abstract Despite the rapidly growing number of meta-analyses in functional neuroimaging, the field lacks formal mathematical tools for the quantitative and qualitative evaluation of meta-analytic data. We propose to use replicator dynamics in the meta-analysis of functional imaging data to address an important aspect of neuroimaging research, the search for functional networks of cortical areas that underlie a specific cognitive task. The replicator process requires as input only a list of activation locations, and it results in a network of locations that jointly show significant activation in most studies included in the meta-analysis. These locations are likely to play a critical role in solving the investigated cognitive task. Our method was applied to a meta-analysis of the Stroop interference task using data provided by the publicly accessible database BrainMap DBJ. Hum Brain Mapp 25:165,173, 2005. © 2005 Wiley-Liss, Inc. [source] Quantitative and qualitative evaluation of neuromotor behaviour in children with a specific speech and language disorderINFANT AND CHILD DEVELOPMENT, Issue 1 2002Michele Noterdaeme Abstract Several studies have described problems in a wide area of motor functions in language impaired children. The purpose of this study was to identify the nature of the motor deficits in two subgroups of language impaired children. A standard neurological examination was performed on 18 children with an expressive language disorder and 21 children with a receptive language disorder. The motor performance of the language disordered children was compared with the motor performance of 23 normal children. The standard neurological examination allowed for a qualitative and quantitative assessment of five specific neurological subsystems. Handedness was determined for all children. The language impaired children had more motor problems than the control children on most neurological subsystems. There were few statistically significant differences between the two groups of language impaired children. An excess in left-handedness was established in the group of children with a receptive language disorder. There was a co-occurrence of verbal and non-verbal deficits in language impaired children. As these motor problems put an additional burden on the development of language impaired children, they should be diagnosed as early as possible. Copyright © 2002 John Wiley & Sons, Ltd. [source] A new approach to the qualitative evaluation of functional disability in dementiaINTERNATIONAL JOURNAL OF GERIATRIC PSYCHIATRY, Issue 11 2003X. Kurz Abstract Background Dementia patients suffer from the progressive deterioration of cognitive and functional abilities. Instrumental disabilities usually appear in the earlier stages of the disease while basic disabilities appear in the more advanced stages. In order to differentiate between mild, moderate and severe patients both instrumental and basic functional disabilities should be taken into account simultaneously. Objectives The objective of this study was to find a new method for classifying dementia patients based on their disabilities by using a basic and an instrumental Activities of Daily Living (ADL) scale. Methods Functional disability was assessed in a Belgian cohort of dementia patients using the Katz and Lawton Instrumental Activities of Daily Living (IADL) scales. A k -means derived clustering method allocated patients to disability clusters according to their Katz and Lawton scores. In order to validate the classification, we compared socio-demographic, clinical and costs parameters between the groups. Results The clustering method allocated patients between three clusters: dependent, non-dependent with instrumental functional disability (ND-IFD) and non-dependent. Dependence, as defined by these clusters, significantly correlates with age, residential setting, MMSE, patient's quality of life and costs. Conclusion This new classification of patients suffering from dementia will provide better understanding of functional disabilities and will complement the evaluation of disease severity based on cognitive function. Copyright © 2003 John Wiley & Sons, Ltd. [source] A Psychoeducational Group for Men with Intellectual Disabilities Who Have Sex with MenJOURNAL OF APPLIED RESEARCH IN INTELLECTUAL DISABILITIES, Issue 4 2001Paul Withers The sexuality and sexual behaviour of people with intellectual disabilities (IDs) is one of the most complex and unresolved issues faced by service providers. Despite much evidence suggesting the disproportionately high risks faced by men with IDs who have sex with men, no epidemiological research has been conducted on the prevalence of HIV within this population. Current thinking suggests that self-help groups are efficacious in helping participants to develop positive sexual identities and to share information about safer sexual practices. The present study is a qualitative evaluation of a pilot support group for men with IDs who have sex with men. Themes relating to the formation of sexual identity and safety issues were extrapolated using content analysis from a transcript of the final group session. The implications for service delivery are discussed. The evaluation was conducted by a clinical psychologist external to the group and the members of the group. [source] Magnetic Resonance Imaging in Patients Diagnosed With Papilledema: A Comparison of 6 Different High-Resolution T1- and T2(*)-Weighted 3-Dimensional and 2-Dimensional SequencesJOURNAL OF NEUROIMAGING, Issue 2 2002Johannes Seitz MD ABSTRACT Purpose. To evaluate visualization and signal characteristics of macroscopic changes in patients with ophthalmologically stated papilledema and to find a suitable high-resolution magnetic resonance imaging (MRI) protocol. Method. Nine consecutive patients with 12 ophthalmologically stated papilledemas underwent MRI of the head and orbits, which consisted of the following high-resolution sequences: 3-dimensional (3D), T2*-weighted (T2*w) constructive interference in steady-state sequence (CISS); 3D, T1-weighted (T1w) magnetization prepared-rapid gradient echo sequence (MP-RAGE) (with and without intravenous contrast medium); transverse 3D and 2-dimensional (2D) (2mm), T2-weighted (T2w) turbo spin echo (TSE); transverse 2D (2mm), contrast-enhanced T1w TSE with fat-suppression technique; and transverse 2D (5mm), T2w TSE. A quantitative and qualitative evaluation of the papilla, optic nerve, optic nerve sheath, optic chiasm, and the brain was performed. The 6 high-resolution sequences were compared. Results. The elevation of the optic disc into the optic globe in ophthalmologically stated papilledema was best visualized in T2w, 3D CISS sequence. The pathological contrast enhancement was best seen in T1w contrast-enhanced 2D TSE sequence with fat-suppression technique. The mean width of the optic nerve sheath directly behind the globe was 7.54 mm (± 1.05 mm) in the pathological eyes, compared to 5.52 mm (± 1.11 mm) in the normal eyes. In all patients, the cerebral indices calculated showed no signs of increased intracranial pressure or other abnormalities changing the volume of the brain or ventricles. The contrast of the orbital fat versus the optic nerve sheath, the optic nerve sheath versus the surrounding cerebrospinal fluid (CSF), the surrounding CSF versus the optic nerve, the optic chiasm versus the CSF, and the optic papilla versus the optic globe were best visualized in the 3D, T2*w CISS sequence. An enhancement of the swollen optic nerve head was best seen in all 12 cases in the T1w contrast-enhanced 2D TSE sequence with fat-suppression technique. Conclusion. An MRI protocol consisting of a 5-mm transverse T2w TSE sequence; a T2*w, 3D CISS sequence; a T1w, 3D MP-RAGE sequence with and without contrast medium; and a transverse T1w, (2-mm) 2D TSE sequence with fat-suppression technique with intravenous contrast medium is suitable to visualize the macroscopic changes in papilledema. In addition, this combination is an excellent technique for the examination of the orbits and the brain. [source] Methodological assessment of acid-etching for visualizing the osteocyte lacunar-canalicular networks using scanning electron microscopyMICROSCOPY RESEARCH AND TECHNIQUE, Issue 3 2010Daniel J. Kubek Abstract Osteocytes are the most abundant of the bone cells. Each osteocyte is contained within its own lacuna and connected to adjacent osteocytes via fillipodial processes, which form an intricate network of canaliculi within the matrix. Studying this intricate network of cells and their processes is difficult, because it exists embedded within a densely mineralized matrix. Scanning electron microscopy (SEM) has been shown to be a useful tool for visualizing this cellular network, yet the techniques involved for preparing specimens has not been systematically explored. The goal of this study was to investigate how variations in acid-etching, both etching media and etching duration, affect SEM-based visualization of the osteocyte lacunar,canalicular network. Bone samples were embedded in plastic and then acid etched in either 9% (10, 20, 40, and 60 s durations) or 37% (5, 10, and 15 s) phosphoric acid. Specimens were imaged using SEM, and qualitative evaluation of the lacunar,canalicular network was undertaken. Our findings show acid etchingwith a 9% phosphoric acid solution for 20 s provided the most favorable visualization of the osteocyte lacunar,canalicular network. Microsc. Res. Tech., 2010. © 2009 Wiley-Liss, Inc. [source] Quantitative versus qualitative evaluation: A tool to decide which to usePERFORMANCE IMPROVEMENT, Issue 4 2008Jackie L. Dobrovolny Evaluation is often avoided in human performance technology (HPT), but it is an essential and frequently catalytic activity that adds significant value to projects. Knowing how to approach an evaluation and whether to use qualitative, quantitative, or both methods makes evaluation much easier. In this article, we provide tools to help determine appropriate evaluation methods. Successful evaluation provides insightful data with which to make informed decisions. [source] A qualitative evaluation of the Care of the Critically Ill Surgical Patient courseANZ JOURNAL OF SURGERY, Issue 10 2009Mario Giuseppe Zotti Abstract Background:, The Care of the Critically Ill Surgical Patient (CCrISP) course was adapted by the Royal Australasian College of Surgeons, being made compulsory for all Basic Surgical Trainees in 2001. The aim of this study was to evaluate whether the course objectives were achieved and identify strengths and weaknesses. Methods:, A retrospective cohort study was completed, after CCrISP Committee support of the proposed conduct, by distribution of questionnaires to instructors and trainees who had completed CCrISP in 2006 or earlier. The questionnaires were qualitative and designed to evaluate the success of CCrISP objectives. Results:, Fourteen instructors and 40 Victorian trainees completed the questionnaires. The major weaknesses identified by the instructors were the trainees' management of complications, nutrition, multiple injuries and sedation, procedural skills and mentoring. Trainees identified weaknesses in procedural skills and mentoring. Both groups identified the strongest areas being the emphasis on communication skills, utilization of clinical knowledge and acumen, management of shock and haemorrhage and management of the acute abdomen. The trainees further identified the systematic approach to the critically ill surgical patient as a major strength. Conclusion:, The primary objectives of the CCrISP course have been met. This study has identified teaching of communication skills, shock and haemorrhage and the systematic approach being the strengths of the course, whereas further refining of the mentoring process and reconsidering the importance of procedural skills is needed, both of which are secondary objectives. [source] Student use of computer-assisted learning (CAL) and effects on learning outcomesBIOCHEMISTRY AND MOLECULAR BIOLOGY EDUCATION, Issue 2 2003Craig Zimitat Abstract This article reports on a qualitative evaluation of student use of a computer-assisted learning (CAL) program and associated learning outcomes. Learning outcomes were classified by analysis of examination scripts using the Structure of Observed Learning Outcomes (SOLO) taxonomy, and individuals were interviewed to uncover aspects of their learning processes while using the CAL program. All students were aware of the "design for learning" features of the CAL program, although not all students were able to take advantage of these because of their own note-taking practices. Verbatim or excessive note-taking was associated with surface learning outcomes, while summarizing or personal note-taking and engagement with the program was associated with deep learning outcomes. Other factors affecting learning outcomes included students' perceptions of the role of the program, social elements of the learning environment, and a lack of distinction between major and minor issues in the content. [source] Quantitative and qualitative assessment of women's experience of a one-stop menstrual clinic in comparison with traditional gynaecology clinicsBJOG : AN INTERNATIONAL JOURNAL OF OBSTETRICS & GYNAECOLOGY, Issue 9 2001Jafaru I. Abu Objective A quantitative and qualitative evaluation of the views of patients attending two types of clinics for menstrual disorders. Methods Semi-structured qualitative interview and quantitative questionnaire. Setting Five traditional general gynaecology clinics and a one-stop menstrual clinic, where investigations are performed and results given to patients on the same day. Participants Two hundred and thirty-nine women (126 from the gynaecology clinic and 113 from the menstrual clinic) were recruited into the quantitative study; 18 and 26 patients from the gynaecology and the menstrual clinic, respectively, were interviewed for the qualitative study. Main outcome measures Women's views about their care and progress towards resolution of their problem. Results Following the initial consultation, 106 (84%) of the gynaecology clinic, and 98 (87%) of the menstrual clinic patients completed the first part of the questionnaire. Of those, 75 (71%) and 79 (81%) patients from the two types of clinic, respectively, completed a follow up questionnaire one year later. There were statistically significant differences in all the components of the first part of the questionnaire (information, continuity, waiting, organisation, and limbo) in favour of the one-stop menstrual clinic. After one year, there was a statistically significant difference in one of the components, patient centeredness, but not in overall process co-ordination. The interviews showed that patients attending the menstrual clinic appreciated getting the results of their investigations on the same day. They also found the organisation of the one-stop menstrual clinic more closely suited to their needs and as a result were more likely to feel they were making progress. Conclusion Women were consistently more positive about their experience in the one-stop clinic. One-stop clinics organised to meet the needs of patients might be appropriate for other clinical conditions. The combination of quantitative and qualitative methods is an effective method of assessing patients' views of health services. [source] 2421: Wall-to-lumen ratio of retinal vessels in patients with cerebrovascular damageACTA OPHTHALMOLOGICA, Issue 2010G MICHELSON Purpose There is evidence that generalized retinal arteriolar narrowing, which can be measured by the arteriole-to-venule ratio (AVR) of retinal vessels, predicts cerebrovascular events. The wall-to-lumen ratio (WLR) and wall cross-sectional area (WCSA) of retinal arterioles reflect structural arteriolar parameters. The primary objective was to test the association between WLR and AVR in patients with cerebrovascular damage. Methods In this cross-sectional study, 23 patients (57.5 +/- 9.4 years) with acute transitory ischemic attack or lacunar cerebral infarct were compared with two age-matched control groups: 83 subjects with essential hypertension (53.7 +/- 5.5 years) and 16 normotensive subjects (52.2 +/- 8.3 years). Retinal arteriolar parameters (WLR, WTH, and WCSA) were assessed in vivo with scanning laser Doppler flowmetry (SLDF). AVR and a qualitative evaluation of retinal vessels were obtained from digital retinal color photographs. The intima-media thickness (IMT) of the carotid artery was measured. Results WLR (0.44 +/- 0.1 vs. 0.34 +/- 0.1 vs. 0.30 +/- 0.1, P < 0.001) and carotid IMT (P < 0.05) were significantly greater in the cerebrovascular event group compared with normotensive subjects. WLR and WCSA were significantly higher in the cerebrovascular event group compared with subjects with mild arterial hypertension. AVR was similar in all three study groups. Conclusion The increase in WLR and WCSA of retinal arterioles, as well as in IMT in patients with cerebrovascular damage suggests vascular hypertrophy in the microvascular and macrovascular bed. The lack of association between AVR of retinal vessels and WLR of retinal arterioles [source] Women's safety service within the Integrated Domestic Abuse Programme: perceptions of service usersCHILD & FAMILY SOCIAL WORK, Issue 2 2010Iolo Madoc-Jones ABSTRACT This paper draws on the findings of a qualitative evaluation that examines women's perceptions of the services provided to them whilst their abusers attended an Integrated Domestic Violence Programme (IDAP) in one probation area in the UK. Research focusing on domestic violence programmes has mostly concentrated on the experiences of male perpetrators. As a result, less is known about how women feel about such programmes and the parallel safety services they are supposed to receive. This research seeks to address that weakness by exploring the perceptions of 13 women whose abusers are attending one perpetrator programme. The findings of our study suggest that women are generally negative about perpetrator programmes and require more comprehensive and coordinated services than are routinely made available to them. The paper suggests that women value and need direct and assertive support as well as safety services, and this need is especially pronounced in rural contexts where women can be isolated from mainstream services. The implications of the research to practice with victims of domestic violence are discussed to inform further development of IDAP and similar programmes in the UK and beyond. [source] Planned telephone support for disadvantaged parents in North Wales: perceptions of service usersCHILD & FAMILY SOCIAL WORK, Issue 4 2007Iolo Madoc-Jones ABSTRACT This paper draws on the findings of a qualitative evaluation to examine user perceptions of a planned telephone support intervention based in a disadvantaged area in North Wales. Telephone support services are tailored differentially to offer information, advice and/or counselling on a crisis-led or planned-intervention basis. Research focusing on telephone support, for the most part (and particularly in the UK) has examined crisis-led as opposed to planned support services. The findings of our study resonate with earlier research findings about telephone support that suggest provision of non-visual support in social care can overcome some practical and financial difficulties for users with little discernible loss to their experience of satisfaction with the service. In addition, the paper suggests that planned support may provide a valuable service to users who are most disadvantaged and marginalized and who have found traditional forms of support unsatisfactory. For such users, planned telephone support can offer one-to-one communication tailored to specific client needs. Moreover, it can enable the development of user trust in the service which empowers users to operationalize strategies in the context of a reliable, sustained, unthreatening (and thus minimal risk) relationship. [source] Everybody needs good neighbours: an evaluation of an intensive project for families facing evictionCHILD & FAMILY SOCIAL WORK, Issue 2 2002Malcolm Hill ABSTRACT This paper presents details of a largely qualitative evaluation of an intensive multi-method Project, with a residential component, which aims to help families facing eviction to overcome their housing-related difficulties. The families served by the Project had a host of other problems related to parenting, with child care and protection issues, addictions and mental health difficulties figuring prominently. Just over half the referrals came from the local authority housing services, with nearly all the remainder coming from the social work department. The majority of families made good progress, but in some cases it proved harder to have an impact on parenting than on tenancy-related matters. Nevertheless, the Project was deemed to have helped some families stay together or be reunited, resulting in substantial financial savings for social work services. Crucial ingredients were good management, stable staff, shared ,ownership' by other agencies, a repertoire of challenging methods, and a holistic approach. [source] Participatory evaluation (II) , translating concepts of reliability and validity in fieldworkCHILD: CARE, HEALTH AND DEVELOPMENT, Issue 3 2007B. Crishna Abstract Background In developing countries participatory methods are a viable way of evaluating social development projects. It provides a means to look constructively at the strengths and weaknesses in projects, and use the lessons learned to improve planning and implementation. One of the challenges faced, however, is being able to ensure that the study is sound, reliable and valid, and that it is free from bias, thus making the final results trustworthy and of use to a larger population. Methods This article looks at five steps involved in a participatory evaluation process and the ways in which reliability and validity have been considered. Results Participatory studies may be different, but all have similar underlying principles as traditional quantitative and qualitative studies. Examples from fieldwork in Asia have been used to demonstrate how studies can be made credible, so that they have value, influence or the ability to encourage changes in thinking, while evaluating social development projects. At every stage, the role of the external evaluator remains crucial, and has to be that of a facilitator, encouraging participation from everyone. Conclusion Hence project evaluations using such a method must be clear in how to remove bias and ensure reliability and validity in all the stages of the evaluation, from planning to making recommendations. Imaginative and alternative strategies need to be developed to examine reliability and validity in the qualitative evaluation. [source] Evaluation of the KA24 (Knowledge Access 24) service for health and social care staff in London and the south-east of England.HEALTH INFORMATION & LIBRARIES JOURNAL, Issue 3 2006Part 2: qualitative Aims and objectives:, The aim of this two-part paper is to identify the main transferable lessons learned from both the quantitative and qualitative evaluations of the KA24 (Knowledge Access 24) service of online databases and selected full-text journals for health and social care staff in London and the south-east of England. The objectives of the qualitative evaluation were to assess the enablers and barriers to usage, and to assess the impact of the service on patient care. Methods:, Telephone interviews (n = 65) and a questionnaire survey (n = 296) were conducted with various types of user, in various Trust settings. Some non-users were also contacted. Selection of interviewees and questionnaire recipients was not random, and aimed to cover all groups of users representatively. Results:, Results show that policy goals were being delivered, with indications of changes to clinical practice, and improved clinical governance. Promotion, training and support needs to be extensive, and tailored to needs, but users are not always aware they need training. The sharing of passwords cast doubts on the reliability of some usage data. Conclusions:, Digital health library services, delivered at the point of care, are changing the way some clinicians practise. A combination of qualitative and quantitative evaluation methods are needed to assess digital library services. [source] | ||||||||||||||||||||||