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Table 3 Bivariate associations (multiple regression analyses) between each pre-admission measure and composite course performance indicators* in models with and without adjustment for confounders – beta (95% confidence intervals, significance) and R 2 of unadjusted model

From: Predictive power of UKCAT and other pre-admission measures for performance in a medical school in Glasgow: a cohort study

  Educational performance measure Honours & commendation#
  Unadjusted Adjusted^ Unadjusted Adjusted^
UKCAT – Total score     
  Beta (95% CIs) 0.216 (0.074-0.357) 0.212 (0.067-0.358) 0.251 (0.110-0.392) 0.217 (0.070-0.364)
  (sig) (0.003) (0.005) (0.001) (0.004)
  R 2 0.047   0.063  
UKCAT – Verbal reasoning     
  Beta (95% CIs) 0.213 (0.071-0.354) 0.219 (0.076-0.361) 0.201 (0.059-0.344) 0.170 (0.024-0.315)
  (sig) (0.003) (0.003) (0.006) (0.023)
  R 2 0.046   0.041  
UKCAT – Quantitative reasoning     
  Beta (95% CIs) 0.219 (0.079-0.360) 0.237 (0.089-0.385) 0.216 (0.074-0.358) 0.205 (0.054-0.356)
  (sig) (0.002) (0.002) (0.003) (0.008)
  R 2 0.049   0.047  
UKCAT – Decision analysis     
  Beta (95% CIs) 0.125 (-0.020-0.270) 0.097 (-0.049-0.243) 0.174 (0.030-0.319) 0.141 (-0.006-0.288)
  (sig) (0.091) (0.192) (0.018) (0.059)
  R 2 0.016   0.030  
UKCAT – Abstract reasoning     
  Beta (95% CIs) 0.014 (-0.131-0.159) 0.012 (-0.132-0.156) 0.074 (-0.072-0.219) 0.053 (-0.093-0.198)
  (sig) (0.849) (0.869) (0.319) (0.476)
  R 2 0.000   0.005  
Total science score     
  Beta (95% CIs) 0.136 (-0.012-0.283) 0.259 (0.092-0.427) 0.087 (-0.062-0.236) 0.148 (-0.024-0.320)
  (sig) (0.071) (0.003) (0.249) (0.092)
  R 2 0.018   0.007  
Interview score #     
  Beta (95% CIs) 0.155 (0.012-0.297) 0.148 (0.006-0.291) 0.131 (-0.013-0.274) 0.119 (-0.026-0.264)
  (sig) (0.034) (0.041) (0.074) (0.107)
  R 2 0.024   0.017  
  1. *All pre-admission and course performance measures standardised as z-scores.
  2. #Honours & Commendation and interview scores transformed to reduce skew prior to standardisation.
  3. ^Adjusted for gender, age, ethnicity and deprivation. Note that R2 is not included for the adjusted models, since our focus is on the variance explained by the pre-admission measures, not the additional variance explained by gender, age, ethnicity and deprivation.