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Table 6 Multivariable regression analysis of factors predictive for scoring above the 75th percentile on the OKAPS

From: Resident and program characteristics that impact performance on the Ophthalmic Knowledge Assessment Program (OKAP)

Variable Odds Ratio 95% Confidence interval P-value
Sex (reference female)
 Male 2.14 0.94–4.90 0.070
Region (reference Midwest)
 Northeast 3.49 0.97–12.56 0.056
 West 3.67 0.99–13.50 0.051
 South 2.90 0.74–11.45 0.128
Lectures (reference did not use)
 Not very useful 0.60 0.10–3.61 0.578
 Extremely/moderately useful 1.42 0.13–4.85 0.795
Group study (reference did not use)
 Not very useful 3.40 1.16–9.94 0.026
 Extremely/moderately useful 0.67 0.53–3.78 0.481
Incentives (reference no)
 Yes 2.75 1.16–6.56 0.022
Average number of hours per week spent studying 1.09 1.01–1.17 0.026
Average number of hours spent in research 3 months prior to exam 0.93 0.87–0.99 0.020
Step 1 2.48 1.68–3.64 < 0.001