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Table 6 Logistic regression for predictors of sitting the UMAT three or more times (N = 3307) vs once only (N = 110,295) (Nagelkerke R Square 0.08)

From: Practice effects in medical school entrance testing with the undergraduate medicine and health sciences admission test (UMAT)

Predictor variable( reference group in brackets) N B S.E. Sig. Exp (B) 95% CI for exp (B)
Lower Upper
UMAT - 1 Quartiles ( 4 ) 28421       
  UMAT-1 Quartile 1 28010 1.519 0.075 <0.001 4.57 3.94 5.29
  UMAT-1 Quartile 2 28252 1.368 0.070 <0.001 3.93 3.43 4.51
  UMAT-1 Quartile 3 28919 1.032 0.070 <0.001 2.81 2.45 3.22
UMAT-2 Quartiles (4) 28588       
  UMAT-2 Quartile 1 28006 0.331 0.063 <0.001 1.39 1.23 1.57
  UMAT-2 Quartile 2 28132 0.350 0.060 <0.001 1.42 1.26 1.60
  UMAT-2 Quartile 3 28876 0.249 0.061 <0.001 1.28 1.14 1.45
UMAT-3 Quartiles (4) 30032       
  UMAT-3 Quartile 1 28000 -0.526 0.058 <0.001 0.59 0.53 0.66
  UMAT-3 Quartile 2 28208 -0.223 0.054 <0.001 0.80 0.72 0.89
  UMAT-3 Quartile 3 27362 -0.059 0.052 0.260 0.94 0.85 1.05
Age (≤ 16 yr of age) 1208       
  17 yr 40433 -0.393 0.159 0.014 0.68 0.49 0.92
  18 yr 49719 -0.608 0.159 <0.001 0.54 0.40 0.74
  19 yr 9527 -0.859 0.167 <0.001 0.42 0.31 0.59
  20 - 30 yr 10865 -0.595 0.166 <0.001 0.55 0.40 0.76
  > 30 yr 1850 -0.485 0.209 0.021 0.62 0.41 0.93
Gender (Females) 65786       
  Males 47816 0.286 0.037 <0.001 1.33 1.24 1.43
Language spoken at home (English) 79313    <0.001    
  Asian Languages 30091 0.253 0.041 <0.001 1.29 1.19 1.40
  European Languages 2302 0.121 0.125 0.334 1.13 0.88 1.44
  Other Languages 1896 0.403 0.113 <0.001 1.450 1.20 1.87
School type (Government) 52724       
  Catholic 20367 -0.030 0.052 0.563 0.97 0.88 1.08
  Independent 37565 -0.034 0.045 0.450 0.97 0.89 1.06
  Other 2515 0.016 0.108 0.881 1.02 0.82 1.26
  TAFE 431 0.537 0.241 0.026 1.71 1.07 2.75
Country (Australia) 99605       
  New Zealand 12874 1.542 0.047 <0.001 4.67 4.26 5.12
  Other Country 1123 -0.151 0.247 0.541 0.86 0.53 1.40
Aboriginal & Torres Strait Islander (ATSI) 113061       
  Non-ATSI 541 0.325 0.322 0.312 1.38 0.74 2.60
  1. (Significant P-values are boldfaced).
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