Order of rotation in third-year clerkships. Influence on academic performance

To determine if student performance during the third-year clerkship is influenced by the order of departmental rotation.

In this retrospective, descriptive study, the National Board of Medical Examiners (NBME) scores, departmental examination grade (DE) and final block grade (FG) were stratified into six segments based on the order of block time in obstetrics-gynecology, pediatrics, psychiatry, internal medicine, surgery and family medicine. Consistency was validated by comparing these performance criteria from 1988 to 1992.

When all six clerkships were assessed by year, there was no uniform trend of improved performance over time. In the obstetrics-gynecology block, however, NBME scores and FGs were highest for students assigned to the fifth and sixth rotation as compared to the first two groups (P < .02). No such trend was noted with the departmental written examination. In surgery, DE and FG were always lower in the first rotation (P = .0001). Psychiatry DE scores were significantly higher on the second or third blocks as compared to the fifth and sixth rotation positions (P < .001). Students had a higher FG in pediatrics when the sixth position was compared to the second block (P = .02), but the DE grades and NBME scores were not altered by rotational schema. In family medicine and internal medicine, no effect of rotation was noted.

Third-year clerks tended to have higher NBME scores and FGs in obstetrics-gynecology if they selected this rotation later in the academic year. Surgery DEs and FGs were lowest if selected first in the academic year. There was no similar trend in other nonsurgical specialties. These data suggest that prior clinical rotations positively influence student performance in obstetrics-gynecology.