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Many Days (many + day)
Selected AbstractsSingle Question about Drunkenness to Detect College Students at Risk for InjuryACADEMIC EMERGENCY MEDICINE, Issue 6 2006Mary Claire O'Brien MD Abstract Objectives: To examine the frequency of injuries reported by college students who replied affirmatively to the question, "In a typical week, how many days do you get drunk?" Methods: In Fall 2003, a Web-based survey was administered to a stratified random sample of 3,909 college students from ten North Carolina (NC) universities. Students answered questions regarding alcohol use and its consequences. Data were analyzed using multiple logistic regression, controlling for within-school clustering of drinking behaviors and adjusting for other significant covariates. Adjusted odds ratios (AORs) and 95% confidence intervals (CI) were calculated for significant predictors (p < 0.05). Results: Two thousand four hundred eighty-eight students reported that they are current drinkers; 1,353 (54.4%) reported getting drunk at least once in a typical week. Compared with students who did not report getting drunk at least once a week, these students had higher odds of being hurt or injured at least once as a result of their own drinking (AOR = 4.97; 95% CI = 3.47 to 7.09), experiencing a fall from a height that required medical treatment (AOR = 2.16; 95% CI = 1.36 to 3.43), and being taken advantage of sexually as a result of another's drinking (AOR = 2.59; 95% CI = 1.72 to 3.89). Students who reported getting drunk at least one day in a typical week also were more likely to cause an injury requiring medical treatment to someone else. They had higher odds of causing injury in an automobile crash (AOR = 1.84; 95% CI = 1.01 to 3.40), of causing a burn that required medical treatment (AOR = 2.85; 95% CI = 1.51 to 5.39), and of causing a fall from a height that required medical treatment (AOR = 2.02; 95% CI = 1.01 to 4.04). Getting drunk was a better indicator of "self-experienced injury" and of "injury caused to someone else" than was binge drinking, for all outcomes (p < 0.05). Conclusions: The single question, "In a typical week, how many days do you get drunk?" identifies college students who are at higher than normal risk of injury as a result of their own drinking and the drinking of others. Future research should assess this question's effectiveness as a screening tool in campus health centers and in emergency departments. [source] Is optimal foraging a realistic expectation in orb-web spiders?ECOLOGICAL ENTOMOLOGY, Issue 4 2009WILL EDWARDS Abstract 1.,Explanations for web relocation invoking optimal foraging require reliable differentiation between individual sites and overall habitat quality. We characterised natural conditions of resource variability over 20 days in artificial webs of the orb-web spider Gasteracantha fornicata to examine this requirement. 2.,Variability in catch success was high. Day-to-day catch success in 90% (18/20) catch sites fitted negative binomial distributions, whereas 10% fitted Poisson distributions. Considered across trap sites (overall habitat), variance in catch success increased proportionally faster than the mean (i.e. Taylor's Power Law, variance = 0.54mean1.764). 3.,We compared the confidence intervals for the expected cumulative catch in randomly drawn sequential samples from a frequency distribution representing the overall habitat (based on the parameters for Taylor's power law) and the frequency distribution of expected cumulative catch within each individual catch site [via randomisation based on the mean and negative binomial exponent (k)]. 4.,In all cases and across all sample sizes, median values for the power to differentiate habitat and catch sites never exceeded 0.2, suggesting that principles involved in optimal foraging, if operating, must be accompanied by a very high degree of uncertainty. 5.,Under conditions of high resource variability, many days must be spent in a single catch site if movement decisions are based on an ability to differentiate current catch site from overall habitat. Empirical evidence suggests this is never met. This may explain why proximal mechanisms that illicit quickly resolved behavioural responses have been more successful in describing web relocation patterns than those associated with optimal foraging. [source] Evaluation of six process-based forest growth models using eddy-covariance measurements of CO2 and H2O fluxes at six forest sites in EuropeGLOBAL CHANGE BIOLOGY, Issue 3 2002K. Kramer Abstract Reliable models are required to assess the impacts of climate change on forest ecosystems. Precise and independent data are essential to assess this accuracy. The flux measurements collected by the EUROFLUX project over a wide range of forest types and climatic regions in Europe allow a critical testing of the process-based models which were developed in the LTEEF project. The ECOCRAFT project complements this with a wealth of independent plant physiological measurements. Thus, it was aimed in this study to test six process-based forest growth models against the flux measurements of six European forest types, taking advantage of a large database with plant physiological parameters. The reliability of both the flux data and parameter values itself was not under discussion in this study. The data provided by the researchers of the EUROFLUX sites, possibly with local corrections, were used with a minor gap-filling procedure to avoid the loss of many days with observations. The model performance is discussed based on their accuracy, generality and realism. Accuracy was evaluated based on the goodness-of-fit with observed values of daily net ecosystem exchange, gross primary production and ecosystem respiration (gC m,2 d,1), and transpiration (kg H2O m,2 d,1). Moreover, accuracy was also evaluated based on systematic and unsystematic errors. Generality was characterized by the applicability of the models to different European forest ecosystems. Reality was evaluated by comparing the modelled and observed responses of gross primary production, ecosystem respiration to radiation and temperature. The results indicated that: Accuracy. All models showed similar high correlation with the measured carbon flux data, and also low systematic and unsystematic prediction errors at one or more sites of flux measurements. The results were similar in the case of several models when the water fluxes were considered. Most models fulfilled the criteria of sufficient accuracy for the ability to predict the carbon and water exchange between forests and the atmosphere. Generality. Three models of six could be applied for both deciduous and coniferous forests. Furthermore, four models were applied both for boreal and temperate conditions. However, no severe water-limited conditions were encountered, and no year-to-year variability could be tested. Realism. Most models fulfil the criterion of realism that the relationships between the modelled phenomena (carbon and water exchange) and environment are described causally. Again several of the models were able to reproduce the responses of measurable variables such as gross primary production (GPP), ecosystem respiration and transpiration to environmental driving factors such as radiation and temperature. Stomatal conductance appears to be the most critical process causing differences in predicted fluxes of carbon and water between those models that accurately describe the annual totals of GPP, ecosystem respiration and transpiration. As a conclusion, several process-based models are available that produce accurate estimates of carbon and water fluxes at several forest sites of Europe. This considerable accuracy fulfils one requirement of models to be able to predict the impacts of climate change on the carbon balance of European forests. However, the generality of the models should be further evaluated by expanding the range of testing over both time and space. In addition, differences in behaviour between models at the process level indicate requirement of further model testing, with special emphasis on modelling stomatal conductance realistically. [source] Hydrometeorological behaviour of pine and larch forests in eastern SiberiaHYDROLOGICAL PROCESSES, Issue 1 2004Shuko Hamada Abstract Seasonal changes in the water and energy exchanges over a pine forest in eastern Siberia were investigated and compared with published data from a nearby larch forest. Continuous observations (April to August 2000) were made of the eddy-correlation sensible heat flux and latent heat flux above the canopy. The energy balance was almost closed, although the sum of the turbulent fluxes sometimes exceeded the available energy flux (Rn , G) when the latent heat flux was large; this was related to the wind direction. We examined the seasonal variation in energy balance components at this site. The seasonal variation and magnitude of the sensible heat flux (H) was similar to that of the latent heat flux (,E), with maximum values occurring in mid-June. Consequently, the Bowen ratio was around 1·0 on many days during the study period. On some clear days just after rainfall, ,E was very large and the sum of H and ,E exceeded Rn , G. The evapotranspiration rate above the dry canopy from May to August was 2·2 mm day,1. The contributions of understory evapotranspiration (Eu) and overstory transpiration (Eo) to the evapotranspiration of the entire ecosystem (Et) were both from 25 to 50% throughout the period analysed. These results suggest that Eu plays a very important role in the water cycle at this site. From snowmelt through the tree growth season (23 April to 19 August 2000), the total incoming water, comprised of the sum of precipitation and the water equivalent of the snow at the beginning of the melt season, was 228 mm. Total evapotranspiration from the forest, including interception loss and evaporation from the soil when the canopy was wet, was 208,254 mm. The difference between the incoming and outgoing amounts in the water balance was from +20 to ,26 mm. The water and energy exchanges of the pine and larch forest differed in that ,E and H increased slowly in the pine forest, whereas ,E increased rapidly in the larch forest and H decreased sharply after the melting season. Consequently, the shape of the Bowen ratio curves at the two sites differed over the period analysed, as a result of the differences in the species in each forest and in soil thawing. Copyright © 2003 John Wiley & Sons, Ltd. [source] Factors Affecting %CDT Status at Entry Into a Multisite Clinical Treatment Trial: Experience from the COMBINE StudyALCOHOLISM, Issue 11 2006Raymond F. Anton Background: Carbohydrate-deficient transferrin (CDT) occurs as a higher percentage of normal transferrin (%CDT) in heavy drinkers. %CDT is used as a marker of both alcohol use disorder severity and treatment outcome both clinically and in treatment trials. Nevertheless, little is known about the parameters that predict which patients are %CDT positives at treatment entry. These parameters might include level of drinking, days of abstinence before testing, and severity of alcohol dependence before evaluation. Methods: %CDT levels were collected before randomization from participants of the COMBINE Study, a large federally sponsored multisite clinical trial evaluating medications and behavioral therapies in alcohol-dependent outpatients. %CDT (assayed in a central laboratory) was available in 1,193 individuals for whom drinking history in the 30 days before testing and measures of alcoholism severity were documented. The effects of drinking history and alcohol severity were evaluated for prediction of a %CDT-positive test status. Results: Less percent days abstinent (PDA) and more drinks per drinking day (DDD) were predictive of higher rates of %CDT-positive patients (maximum 67%). Up to 14 days of continuous abstinence before testing did not appear to significantly affect %CDT status. Rates of %CDT positives remained reasonably steady up to about 40% PDA. Years of drinking at dependence levels had an unexpected negative impact on %CDT-positive rates while previous treatment had a small but positive impact of %CDT-positive rates. ADS and DrInC scores had no predictive value over and above recent drinking amounts on %CDT status. Conclusions: %CDT is more likely to be positive in those who have more days of drinking and to a lesser degree in those who drink more per drinking day. It can remain positive even in those alcoholic subjects who stop drinking many days before testing. Alcoholic subjects with more treatment experiences appear to have a marginally higher %CDT-positive rate. [source] Retrospective evaluation of pain assessment and treatment for acute vasoocclusive episodes in children with sickle cell diseasePEDIATRIC BLOOD & CANCER, Issue 2 2008William T. Zempsky MD Abstract Background This study was conducted to assess the care of pediatric patients hospitalized for sickle cell disease-related vasoocclusive episodes (VOE). The aim of this research was to illustrate the course of pain scores and methods of therapeutic intervention during hospitalization. Procedure Retrospective medical chart reviews were conducted to collect pain assessment and management data about children hospitalized during a 2-year period at an urban children's hospital. T tests and Chi-square analyses were used to identify differences in demographic variables, pain scores and opiate utilization. Results There were 59 children with 134 hospitalizations for VOE in a 2-year period. 50.8% of the patients were male; the mean age was 11.5,±,4.9 years. The average length of hospitalization was 4.6,±,2.7 days (range 1,19 days). Older patients stayed in the hospital significantly longer than younger patients (P,=,0.002). Pain scores remained in the moderate to severe range (,5 out of 10) for many days in the majority of patients. Results failed to reveal significant differences in pain scores and opiate utilization between patients who had short versus extended hospitalizations, and for those patients with frequent versus infrequent hospitalizations for pain. Conclusions Despite opiate dosing within recommended guidelines, mean pain scores remain in the moderate to severe range for several days following hospitalization for VOE. Future research should explore the factors which influence pain scores, as well as improved pain assessment and management techniques. Pediatr Blood Cancer 2008;51:265,268. © 2008 Wiley-Liss, Inc. [source] Children's memory for the duration of a paediatric consultationAPPLIED COGNITIVE PSYCHOLOGY, Issue 4 2010William J. Friedman To learn about children's ability to estimate the duration of an event many days after it occurred, 6,12-year-old children were asked to judge the amount of time (range 5,45,minutes) they spent in the treatment room as part of a paediatric visit. Judgements were made 1,week or 1,month after the visit occurred. Children showed an average error of about 13,minutes. Retention interval did not significantly affect estimates. Other judgements of the length of the interview itself (mean length 8,minutes) provided what may be the first data on children's ability to make immediate retrospective duration estimates. The results also include information about children's capacity to judge how long ago they visited the clinic. Copyright © 2009 John Wiley & Sons, Ltd. [source] | |||||||||||||