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Panel Size (panel + size)

Distribution by Scientific Domains

Medical Sciences	80%

Selected Abstracts

Assessment in the context of uncertainty: how many members are needed on the panel of reference of a script concordance test?

MEDICAL EDUCATION, Issue 3 2005
R Gagnon
Purpose, The script concordance test (SCT) assesses clinical reasoning in the context of uncertainty. Because there is no single correct answer, scoring is based on a comparison of answers provided by examinees with those provided by members of a panel of reference made up of experienced practitioners. This study aims to determine how many members are needed on the panel to obtain reliable scores to compare against the scores of examinees. Methods, A group of 80 residents were tested on 73 items (Cronbach's ,: 0.76). A total of 38 family doctors made up the pool of experienced practitioners, from which 1000 random panels of reference of increasing sizes (5, 10, 15, 20, 25 and 30) were generated with a resampling procedure. Residents' scores were computed for each panel sample. Units of analysis were means of residents' score, test reliability coefficient and correlation coefficient between scores obtained with a given panel of reference versus the scores obtained with the full panel of 38. Statistics were averaged across the 1000 samples for each panel size for the mean and test reliability computations, and across 100 samples for the correlation computation. Results, For sample variability, there was a 3-fold increase in standard deviation of means between a sample panel size of 5 (SD = 1.57) and a panel size of 30 (SD = 0.50). For reliability, there was a large difference in precision between a panel size of 5 (0.62) and a panel size of 10 (0.70). When the panel size was over 20, the gain became negligible (0.74 for 20 and 0.76 for 38). For correlation, the mean correlation coefficient values were 0.90 with 5 panel members, 0.95 with 10 members and 0.98 with 20 members. Conclusion, Any number over 10 is associated with acceptable reliability and good correlation between the samples versus the full panel of 38. For high stake examinations, using a panel of 20 members is recommended. Recruiting more than 20 panel members shows only a marginal benefit in terms of psychometric properties. [source]

Veterans Affairs Primary Care Clinicians' Attitudes toward Chronic Pain and Correlates of Opioid Prescribing Rates

PAIN MEDICINE, Issue 5 2008
Steven K. Dobscha MD
ABSTRACT Objectives., The primary objective of this study was to identify veterans affairs (VA) primary care clinicians' attitudes regarding chronic pain treatment. A secondary objective was to explore relationships between clinician and practice characteristics and an objective measure of opioid prescribing rates. Design., Cross-sectional study of clinician survey and pharmacy data. Participants., Forty-five VA clinicians from five primary care clinics of one VA medical center. Measures., Survey of pain-related attitudes and behaviors, satisfaction with treatment resources, and job satisfaction; percentage of patients in clinicians' panels prescribed opioids (PCPO). Results., Seventy-one percent of clinicians felt moderately or strongly confident in their ability to treat chronic pain, and 77% moderately or strongly agreed that skilled pain management is a high priority. However, 73% moderately or strongly agreed that patients with chronic pain are a major source of frustration and 38% reported moderate or greater dissatisfaction with their ability to provide optimal pain treatment. Fifty-two percent moderately or strongly agreed that their management is influenced by previous experiences with patients addicted to drugs. The mean PCPO was 16.5% (SD = 6.7). In bivariate comparisons, clinician panel size, job and resource satisfaction, and professional training were associated with opioid prescribing rates. Conclusion., High clinician confidence and interest in treating chronic pain concurrent with low satisfaction with ability to provide optimal treatment suggests a need for more system support. VA primary care clinicians are frequently influenced by fears of contributing to dependence or addiction. The relationships among panel size, job satisfaction, and opioid prescribing rates merit additional investigation. [source]

Testing for Hysteresis in Unemployment in OECD Countries: New Evidence using Stationarity Panel Tests with Breaks,

OXFORD BULLETIN OF ECONOMICS & STATISTICS, Issue 2 2006
Mariam Camarero
Abstract This paper tests hysteresis effects in unemployment using panel data for 19 Organization for Economic Co-operation and Development (OECD) countries covering the period 1956,2001. The tests exploit the cross-sectional variations of the series, and additionally, allow for a different number of endogenous breakpoints in the unemployment series. The critical values are simulated based on our specific panel sizes and time periods. The findings stress the importance of accounting for exogenous shocks in the series and support the natural-rate hypothesis of unemployment for the majority of the countries analysed. [source]