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Table 1 Mean ACR score difference and correlation between ACR scores and RCPSC exam results between those that passed and those that failed their RCPSC exams (CI = Confidence Intervals)

From: Can American College of Radiology in-training examination scores be used to predict Canadian radiology licensing examination results? A retrospective study

Year of training* RCPSC exam result N† Mean ACR score [95% CI] Mean ACR difference [95% CI] Biserial rb
PGY2 Passed 50 46.08 [37.97, 54.19] 34.33 [23.75, 44.91] (P<0.0005) ‡ 0.640
  Failed 8 11.75 [3.99, 19.51]   
PGY3 Passed 56 51.48 [43.47, 59.49] 35.70 [24.33, 47.07] (P<0.0005) 0.635
  Failed 9 15.78 [6.86, 24.70]   
PGY4 Passed 49 56.57 [48.59, 64.55] 29.32 [12.67, 45.97] (P=0.002) 0.563
  Failed 8 27.25 [11.67, 42.83]   
PGY5 Passed 46 54.46 [45.67, 63.24] 36.96 [24.04, 49.87] (P<0.0005) 0.661
  Failed 8 17.50 [6.93, 28.07]   
Average Passed 57 51.42 [44.60, 58.24] 33.75 [24.42, 43.08] (P<0.0005) 0.692
  Failed 10 17.67 [10.68, 24.65]   
  1. RCPSC = Royal College of Physicians and Surgeons of Canada, ACR = American College of Radiology, CI = confidence interval, PGY = post graduate year.
  2. *PGY2 is the first year of 4 consecutive years of radiology-specific specialty training.
  3. †Missing ACR values were omitted from analysis therefore the sample size varied in each year.
  4. ‡ Statistical significance at P ≤ 0.05.