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Table 6 Mean (95% CI)% correct in respective subspecialties for each elective exposure

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

Exposure   Not exposed Exposed p
Cardiology n 18 113  
  Mean 79.6 80.2 0.81
  (95% CI) (74.9-84.2) (78.3-81.9)  
Endocrinology n 43 88  
  Mean 77.7 79.2 0.48
  (95% CI) (74.6-80.8) (76.7-81.6)  
Gastroenterology n 49 82  
  Mean 76.9 79.3 0.20
  (95% CI) (73.9-80.0) (77.2-81.4)  
Hematology n 66 65  
  Mean 81.4 81.0 0.87
  (95% CI) (78.2-84.5) (77.8-84.2)  
Infectious Diseases n 20 111  
Mean 80.9 80.4 0.81
  (95% CI) (75.7-86.2) (78.5-82.3)  
Oncology n 62 69  
  Mean 72.6 76.0 0.11
  (95% CI) (69.4-75.7) (73.1-78.9)  
Nephrology n 54 74  
  Mean 83.3 83.6 0.87
  (95% CI) (79.9-86.7) (80.9-86.4)  
Pulmonary n 38 93  
  Mean 73.2 78.8 0.0092
  (95% CI) (69.8-76.7) (76.5-81.1)  
Rheumatology n 42 89  
  Mean 80.48 80.64 0.93
  (95% CI) (77.6-83.4) (78.4-82.9)  
Primary Care n 101 30  
  Mean 75.3 77.5 0.21
  (95% CI) (73.6-76.9) (74.1-80.9)  
  1. P-value calculated using two-tailed unpaired t-testP-value calculated using two-tailed unpaired t-test.