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| Class | RR | 95% CI | P-value |
|---|---|---|---|
| All housestaff | .90 | .79–1.03 | .14 |
| PGY-1 | .83 | .69-.99 | .04 |
| PGY2 and PGY3 | 1.00 | .82–1.22 | .95 |
RR = Relative Risk; CI-Confidence Interval. Data was clustered by individual, month of quiz and adjusted for PGY class.
