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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).