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  • Title: Effect of work hours, caseload, shift type, and experience on resident call performance.
    Author: Davenport MS, Ellis JH, Khalatbari SH, Myles JD, Klein KA.
    Journal: Acad Radiol; 2010 Jul; 17(7):921-7. PubMed ID: 20540912.
    Abstract:
    RATIONALE AND OBJECTIVES: To analyze the independent effects of multiple variables on resident call performance. MATERIALS AND METHODS: Independent radiology resident "on call" cross-sectional imaging interpretation quality assurance (QA) data obtained during a 171-day period at a single tertiary care Level 1 trauma teaching institution was reviewed. Clinically significant resident-faculty discrepancies were compared among three different call types: traditional single-day overnight call (OC, 15 hours/night after 9 daytime hours on weekdays), 7-night nightfloat (NF, 9 hours/night), and weekend day call (WD, 10 hours/day). Logistic regression analyses were performed to evaluate associations. RESULTS: There were 119 (0.89%) clinically significant resident-faculty discordances from 13,424 cross-sectional interpretations: 56 (0.79%) from 7102 interpretations on 172 OC shifts, 39 (0.85%) from 4567 interpretations on 165 NF shifts, and 24 (1.4%) from 1755 interpretations on 49 WD shifts. Individual residents (n = 20) had a mean discrepancy rate of 0.9% (0.45%-1.9%). Overall, 102 (26.2%) of the shifts had at least one discordance. The following were associated with significantly (P < .001) increased discrepancy rates: junior vs. senior residents (odds ratio [OR] = 1.3 [1.2-1.4]), OC vs. NF (OR = 1.5 [1.3-1.6], WD vs. NF (OR = 1.4 [1.2-1.6]), weekend vs. weekday (OR = 1.3 [1.2-1.4]), and increasing cases/hour (OR = 1.6 [1.5-1.7]). Weekend OC shifts had a higher discrepancy rate (OR 1.3[1.2-1.5], P < .001) than weekday OC shifts despite a shorter workday (15 vs. 24 hours). CONCLUSION: Increasing caseload, junior residents, and weekends are associated with a significantly higher discrepancy rate. OC is associated with a significantly higher discrepancy rate than NF. Measured discrepancy rates are low, regardless of call type.
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