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Cost Comparison (cost + comparison)
Selected AbstractsProcess Cost Comparison for Conventional and Near-Net-Shape Cermet Fabrication,ADVANCED ENGINEERING MATERIALS, Issue 3 2010Yuhong Xiong Tungsten carbide,cobalt (WC,Co) is a widely used cermet that is generally fabricated into bulk parts via conventional powder metallurgy (P/M) methods. Because this material (and other cermets) is very hard and wear resistant, diamond grinding is generally required to fabricate complex parts. As an alternative, studies have shown the Laser Engineering Net Shaping (LENS) process to be a technically feasible method, allowing for fabrication of near-net-shape parts. The economic trade-offs, however, have not been previously characterized. In this work, technical cost modeling (TCM) is applied to compare the costs of fabricating WC,Co parts with the P/M process to those of the LENS process. Cost drivers are identified and sensitivity analysis is conducted. Results reveal that the uncertainty in functional unit has a significant effect on relative process costs, and the cost is sensitive to order size only if less than ten parts are produced. It is concluded that the LENS process is economically preferable if part size is small or part shape is complex. The P/M process is more suitable to produce large parts in simple shapes. [source] Nocturnal Haemodialysis , A Preliminary Cost Comparison with Conventional Haemodialysis in AustraliaHEMODIALYSIS INTERNATIONAL, Issue 1 2003JWM Agar A 6 night/wk, home-based, government funded nocturnal haemodialysis (NHDx) program, believed to be the first outside North America, commenced in July 2001. Previously published Canadian and US costs suggest NHDx to be more cost-efficient than conventional haemodialysis (CHDx) as, although consumable-expensive, NHDx is home-based and is thus highly infrastructure, wage and hospital inpatient bed-day efficient. Comparable Australian cost evaluation is essential, however, before NHDx is widely encouraged as a new modality here. Cost comparisons for 3 × wk CHDx vs preliminary costs for 9/12 pts on 6 × wk NHDx (3 excluded for inadequate program time) include: consumables/fluids CHDx @$A8781/pt/yr vs NHDx @$A17562/pt/yr; estimated nursing costs CHDx (62.25 nurse hrs/wk with a nurse/pt ratio of 3:9)@$A12666/pt/yr vs NHDx (40 nurse hrs/wk with a nurse/pt ratio of 1:9)@$A8111/pt/yr with projected reduction to A$4866 for nurse/pt ratio of 1:15; pharmaceutical costs (includes all medication & Fleet® for dialysate but excludes EPO/iron polymaltose) CHDx one month prior to NHDx @$A1412/pt/yr vs NHDx costs after one month starting home-based treatment @$A1273/pt/yr. Though the NHDx pts have been carefully selected, only 3 hospitalizations for a total of 4 bed-days have been necessary in 348.5 pt wks of experience to September 2002. Our preliminary cost analyses confirm prior North American data. Cumulative financial modeling shows NHDx is more costly than CHDx at low pt numbers, reaching approximate equivalence @ 12 pts and progressively dropping below CHDx costs thereafter. NHDx appears cost-competitive with CHDx whilst yielding superior biochemical, life-style and rehabilitation results (see accompanying clinical data abstract). [source] Cost Comparison of Catheter Ablation and Medical Therapy in Atrial FibrillationJOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY, Issue 9 2007F.R.C.P.C., YAARIV KHAYKIN M.D. Introduction: There is emerging evidence for clinical superiority of catheter ablation over rate and rhythm control strategies in paroxysmal atrial fibrillation (PAF). The objective of this study was to compare costs related to medical therapy versus catheter ablation for PAF in Ontario (Canada). Methods: Costs related to medical therapy in the analysis included the cost of anticoagulation, rate and rhythm control medications, noninvasive testing, physician follow-up visits, and hospital admissions, as well as the cost of complications related to this management strategy. Costs related to catheter ablation were assumed to include the cost of the ablation tools (electroanatomic mapping or intracardiac echocardiography-guided pulmonary vein ablation), hospital and physician billings, and costs related to periprocedural medical care and complications. Costs related to these various elements were obtained from the Canadian Registry of Atrial Fibrillation (CARAF), government fee schedules, and published data. Sensitivity analyses looking at a range of initial success rates (50,75%) and late attrition rates (1,5%), prevalence of congestive heart failure (CHF) (20,60%), as well as discounting varying from 3% to 5% per year were performed. Results: The cost of catheter ablation ranged from $16,278 to $21,294, with an annual cost of $1,597 to $2,132. The annual cost of medical therapy ranged from $4,176 to $5,060. Costs of ongoing medical therapy and catheter ablation for PAF equalized at 3.2,8.4 years of follow-up. Conclusion: Catheter ablation is a fiscally sensible alternative to medical therapy in PAF with cost equivalence after 4 years. [source] Yardstick Cost Comparison and Economies of Scale and Scope in Japan's Electric Power IndustryASIAN ECONOMIC JOURNAL, Issue 4 2004Takanori Ida This paper utilizes a fixed-effects model of panel data analysis and estimates the translog cost function of the Japanese electric power industry from 1978 to 1998. First, we investigate whether the Japanese electric power industry is naturally monopolistic. We find that all electric power companies still benefit from both scale and scope economies and therefore, this industry remains a naturally mono-polistic industry. Second, in order to apply the idea of yardstick-type competition to a naturally monopolistic industry where costs are quite different between companies, we introduce two kinds of cost-comparison coefficients, one for the individually specific effects and the other for scale and scope economies. [source] DNAPL Characterization Methods and Approaches, Part 2: Cost ComparisonsGROUND WATER MONITORING & REMEDIATION, Issue 1 2002Mark L. Kram Contamination from the use of chlorinated solvents, often classified as dense nonaqueous phase liquids (DNAPLs) when in an undissolved state, pose environmental threats to ground water resources worldwide. DNAPL site characterization method performance comparisons are presented in a companion paper (Kram et al. 2001). This study compares the costs for implementing various characterization approaches using synthetic unit model scenarios (UMSs), each with particular physical characteristics. Unit costs and assumptions related to labor, equipment, and consumables are applied to determine costs associated with each approach for various UMSs. In general, the direct-push sensor systems provide cost-effective characterization information in soils that are penetrable with relatively shallow (less than 10 to 15 m) water tables. For sites with impenetrable lithology using direct-push techniques, the Ribbon NAPL Sampler Flexible Liner Underground Technologies Everting (FLUTe) membrane appears to be the most cost-effective approach. For all scenarios studied, partitioning interwell tracer tests (PITTs) are the most expensive approach due to the extensive pre-and post-PITT requirements. However, the PITT is capable of providing useful additional information, such as approximate DNAPL saturation, which is not generally available from any of the other approaches included in this comparison. [source] Nocturnal Haemodialysis , A Preliminary Cost Comparison with Conventional Haemodialysis in AustraliaHEMODIALYSIS INTERNATIONAL, Issue 1 2003JWM Agar A 6 night/wk, home-based, government funded nocturnal haemodialysis (NHDx) program, believed to be the first outside North America, commenced in July 2001. Previously published Canadian and US costs suggest NHDx to be more cost-efficient than conventional haemodialysis (CHDx) as, although consumable-expensive, NHDx is home-based and is thus highly infrastructure, wage and hospital inpatient bed-day efficient. Comparable Australian cost evaluation is essential, however, before NHDx is widely encouraged as a new modality here. Cost comparisons for 3 × wk CHDx vs preliminary costs for 9/12 pts on 6 × wk NHDx (3 excluded for inadequate program time) include: consumables/fluids CHDx @$A8781/pt/yr vs NHDx @$A17562/pt/yr; estimated nursing costs CHDx (62.25 nurse hrs/wk with a nurse/pt ratio of 3:9)@$A12666/pt/yr vs NHDx (40 nurse hrs/wk with a nurse/pt ratio of 1:9)@$A8111/pt/yr with projected reduction to A$4866 for nurse/pt ratio of 1:15; pharmaceutical costs (includes all medication & Fleet® for dialysate but excludes EPO/iron polymaltose) CHDx one month prior to NHDx @$A1412/pt/yr vs NHDx costs after one month starting home-based treatment @$A1273/pt/yr. Though the NHDx pts have been carefully selected, only 3 hospitalizations for a total of 4 bed-days have been necessary in 348.5 pt wks of experience to September 2002. Our preliminary cost analyses confirm prior North American data. Cumulative financial modeling shows NHDx is more costly than CHDx at low pt numbers, reaching approximate equivalence @ 12 pts and progressively dropping below CHDx costs thereafter. NHDx appears cost-competitive with CHDx whilst yielding superior biochemical, life-style and rehabilitation results (see accompanying clinical data abstract). [source] Incomplete data render cost comparison of chiropractic with medical care for back pain inconclusiveFOCUS ON ALTERNATIVE AND COMPLEMENTARY THERAPIES AN EVIDENCE-BASED APPROACH, Issue 4 2005Article first published online: 14 JUN 2010 [source] The development and evaluation of a telepsychiatry service for prisonersJOURNAL OF PSYCHIATRIC & MENTAL HEALTH NURSING, Issue 4 2004S. LEONARD bsc rn (mm) dip ndip b&fdip ptsdcounselling The introduction of increasingly sophisticated telecommunication systems seems to offer opportunities to respond to some of the key problems around structural and spatial inequalities in access to health care. There is evidence which suggests that serious mental health problems are common among prisoners and psychiatric comorbidity is the norm. Many prisoners have complex mental health needs, but more often than not these remain unaddressed. Telepsychiatry is one strategy to improve the accessibility and quality of mental health care in the prison setting. This paper firstly reviews the current prison health care system and then describes a research study which is focused on the development and evaluation of a telepsychiatry service for prisoners. This study has investigated what is lost or gained in a psychiatric assessment when it is conducted via telepsychiatry. The researcher compared the inter-rater reliability between two raters interviewing 80 participants in an observer/interviewer split configuration in telepsychiatry and same room settings. The measure used was the Comprehensive Psychopathology Rating Scale. Prisoners and prison staff also took part in semi-structured interviews which focused on their satisfaction and acceptability of the telepsychiatry service. A cost comparison of the telepsychiatry service with the existing visiting service was conducted. This paper outlines the study design and focuses on the potential impact that telepsychiatry may have upon the practice setting. [source] Cost-comparison of DDT and alternative insecticides for malaria controlMEDICAL AND VETERINARY ENTOMOLOGY, Issue 4 2000K. Walker Summary In anti-malaria operations the use of DDT for indoor residual spraying has declined substantially over the past 30 years, but this insecticide is still considered valuable for malaria control, mainly because of its low cost relative to alternative insecticides. Despite the development of resistance to DDT in some populations of malaria vector Anopheles mosquitoes (Diptera: Culicidae), DDT remains generally effective when used for house-spraying against most species of Anopheles, due to excitorepellency as well as insecticidal effects. A 1990 cost comparison by the World Health Organization (WHO) found DDT to be considerably less expensive than other insecticides, which cost 2 to 23 times more on the basis of cost per house per 6 months of control. To determine whether such a cost advantage still prevails for DDT, this paper compares recent price quotes from manufacturers and WHO suppliers for DDT and appropriate formulations of nine other insecticides (two carbamates, two organophosphates and five pyrethroids) commonly used for residual house-spraying in malaria control programmes. Based on these ,global' price quotes, detailed calculations show that DDT is still the least expensive insecticide on a cost per house basis, although the price appears to be rising as DDT production declines. At the same time, the prices of pyrethroids are declining, making some only slightly more expensive than DDT at low application dosages. Other costs, including operations (labour), transportation and human safety may also increase the price advantages of DDT and some pyrethroids vs. organophosphates and carbamates, although possible environmental impacts from DDT remain a concern. However, a global cost comparison may not realistically reflect local costs or effective application dosages at the country level. Recent data on insecticide prices paid by the health ministries of individual countries showed that prices of particular insecticides can vary substantially in the open market. Therefore, the most cost-effective insecticide in any given country or region must be determined on a case-by-case basis. Regional coordination of procurement of public health insecticides could improve access to affordable products. [source] Four inventory models for deteriorating items with time varying demand and partial backlogging: A cost comparisonOPTIMAL CONTROL APPLICATIONS AND METHODS, Issue 6 2003K. Skouri Abstract In this paper we present four inventory control models under the following assumptions. Planning horizon is finite and demand is a general logconcave function of time. The models allow for deterioration of items over time and shortages partially backlogged at an exponential rate. For each of the models we establish the existence of a unique optimal policy. We then compute their optimal costs and rank them according to cost performance. This ranking indicates that model four gives the lowest cost. Numerical examples are given to support the theoretical findings and explain the application of procedures. Copyright © 2003 John Wiley & Sons, Ltd. [source] Self-management for men surviving prostate cancer: a review of behavioural and psychosocial interventions to understand what strategies can work, for whom and in what circumstancesPSYCHO-ONCOLOGY, Issue 9 2010Jane Cockle-Hearne Abstract Objective: In the context of increasing prostate cancer survivorship, evidence of unmet supportive care needs and growing economic health-care restraints, this review examined and evaluated best approaches for developing self-management programmes to meet men's survivorship needs. Methods: A search of international literature published in the last 12 years was conducted. Only randomised controlled trials were included in the analysis. Key components of the interventions were evaluated to determine what has been offered, and which elements are most beneficial in improving health outcomes. Methodological issues were also considered. Results: Targeting participant need and promoting motivation to participate and maintain programme adherence were the most important factors to emerge in ensuring positive health outcomes. Both need and motivation are multi-faceted, the components of which are identified and evaluated. Guidance was also identified in relation to delivery design, theoretical mechanisms for change, modes of delivery and facilitator issues. Conclusion: Self-management is a viable and appropriate way of providing health-care solutions to ameliorate men's functional and emotional problems associated with increased prostate cancer survivorship. Integration into clinical practice will require training, resources and commitment and, in addition, economic viability will be difficult to assess since cost comparison with current provision is not straightforward. Nevertheless, from the psychosocial and behavioural studies reviewed there is convincing evidence that can be used to design, implement and evaluate future self-management programmes for men surviving prostate cancer. Copyright © 2010 John Wiley & Sons, Ltd. [source] Methodology and model for performance and cost comparison of innovative treatment technologies at wood preserving sitesREMEDIATION, Issue 1 2001Mark L. Evans Wood preserving facilities have used a variety of compounds, including pentachlorophenol (PCP), creosote, and certain metals, to extend the useful life of wood products. Past operations and waste management practices resulted in soil and water contamination at a portion of the more than 700 wood preserving sites in the United States (EPA, 1997). Many of these sites are currently being addressed under federal, state, or voluntary cleanup programs. The U.S. Environmental Protection Agency (EPA) National Risk Management Research Laboratory (NRMRL) has responded to the need for information aimed at facilitating remediation of wood preserving sites by conducting treatability studies, issuing guidance, and preparing reports. This article presents a practical methodology and computer model for screening the performances and comparing the costs of seven innovative technologies that could be used for the treatment of contaminated soils at user-specified wood preserving sites. The model incorporates a technology screening function and a cost-estimating function developed from literature searches and vendor information solicited for this study. This article also provides background information on the derivation of various assumptions and default values used in the model, common contaminants at wood preserving sites, and recent trends in the cleanup of such sites. © 2001 John Wiley & Sons, Inc. [source] Treatment of Acute Renal Failure in the Intensive Care Unit: Lower Costs by Intermittent Dialysis Than Continuous Venovenous HemodiafiltrationARTIFICIAL ORGANS, Issue 8 2009Stefan Farese Abstract Intermittent and continuous renal replacement therapies (RRTs) are available for the treatment of acute renal failure (ARF) in the intensive care unit (ICU). Although at present there are no adequately powered survival studies, available data suggest that both methods are equal with respect to patient outcome. Therefore, cost comparison between techniques is important for selecting the modality. Expenditures were prospectively assessed as a secondary end point during a controlled, randomized trial comparing intermittent hemodialysis (IHD) with continuous venovenous hemodiafiltration (CVVHDF). The outcome of the primary end points of this trial, that is, ICU and in-hospital mortality, has been previously published. One hundred twenty-five patients from a Swiss university hospital ICU were randomized either to CVVHDF or IHD. Out of these, 42 (CVVHDF) and 34 (IHD) were available for cost analysis. Patients' characteristics, delivered dialysis dose, duration of stay in the ICU or hospital, mortality rates, and recovery of renal function were not different between the two groups. Detailed 24-h time and material consumption protocols were available for 369 (CVVHDF) and 195 (IHD) treatment days. The mean daily duration of CVVHDF was 19.5 ± 3.2 h/day, resulting in total expenditures of ,436 ± 21 (21% for human resources and 79% for technical devices). For IHD (mean 3.0 ± 0.4 h/treatment), the costs were lower (,268 ± 26), with a larger proportion for human resources (45%). Nursing time spent for CVVHDF was 113 ± 50 min, and 198 ± 63 min per IHD treatment. Total costs for RRT in ICU patients with ARF were lower when treated with IHD than with CVVHDF, and have to be taken into account for the selection of the method of RRT in ARF on the ICU. [source] Country specific cost comparisons from multinational clinical trials using empirical Bayesian shrinkage estimation: the Canadian ASSENT-3 economic analysisHEALTH ECONOMICS, Issue 4 2005Andrew R. Willan Abstract The growing number of multinational clinical trials in which patient-level health care resource data are collected have raised the issue of which is the best approach for making inference for individual countries with respect to the between-treatment difference in mean cost. We describe and discuss the relative merits of three approaches. The first uses the random effects pooled estimate from all countries to estimate the difference for any particular country. The second approach estimates the difference using only the data from the specific country in question. Using empirical Bayes estimation a third approach estimates the country-specific difference using a variance-weighted linear sum of the estimates provided by the other two approaches. The approaches are illustrated and compared using the data from the ASSENT-3 trial. Copyright © 2005 John Wiley & Sons, Ltd. [source] | |||||||||||||