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Table 2 Mean (95% CI) delta-SPS by demographic characteristics

From: Impact of subspecialty elective exposures on outcomes on the American board of internal medicine certification examination

  n Mean delta-SPS 95%CI p value
Female 55 117.4 96.2-138.5 0.0485
Male 76 146.6 126.9-166.2
Age ≥31 67 133.5 111.8-155.3 0.91
Age ≤30 64 135.1 115.6-154.6
Number of elective exposures ≤14 44 143.4 122.5-164.3 0.051
Number of elective exposures ≥15 87 129.7 110.4-148.9
Number of unique electives ≤8 101 134.3 117.7-150.9 1.00
Number of unique electives ≥9 30 134.2 102.9-165.4  
  1. P-values calculated using two-tailed t-test. Male:Female ratio for the entire cohort was 1.38. Male:Female ratio for the group with ≤14 elective exposures was 1.32 compared to 1.41 for the group with ≥15 elective exposures (p=ns).