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Table 4 Stratified analyses of association between consultants’ revalidation status and hazard of exit and sensitivity analyses based on alternative modelling approaches. All regression models adjust for consultant characteristics (not reported)

From: Does regulation increase the rate at which doctors leave practice? Analysis of routine hospital data in the English NHS following the introduction of medical revalidation

 

N

(2) Post-policy—awaiting revalidation

(3) Post-policy—deferred/non-engaged

(4) Post-policy—revalidated

Difference (2)–(4)

HR

95% CI

HR

95% CI

HR

95% CI

χ 2

p value

Stratified analysis

 By consultant age

  ≤ 40

3336

1.94

(1.42 to 2.64)

0.87

(0.13 to 5.99)

1.02

(0.67 to 1.56)

9.96

0.002

  41–45

5032

2.73

(2.12 to 3.52)

6.55

(3.67 to 11.69)

1.30

(0.91 to 1.87)

23.37

< 0.001

  46–50

4250

2.85

(2.21 to 3.66)

5.53

(2.65 to 11.52)

2.12

(1.55 to 2.90)

4.96

0.026

  51–55

3259

2.52

(1.97 to 3.23)

3.26

(1.70 to 6.27)

2.35

(1.82 to 3.05)

0.54

0.464

  56–60

2172

1.94

(1.62 to 2.34)

2.92

(1.79 to 4.75)

1.35

(1.09 to 1.68)

15.73

< 0.001

  61–65

1117

1.88

(1.55 to 2.29)

1.47

(0.76 to 2.81)

1.57

(1.20 to 2.04)

2.23

0.136

  > 65

168

2.45

(1.68 to 3.56)

3.81

(0.99 to 14.69)

2.24

(1.02 to 4.89)

0.06

0.810

  By consultant gender

  Male

15,386

2.41

(2.18 to 2.67)

3.43

(2.58 to 4.58)

1.90

(1.68 to 2.14)

21.98

< 0.001

  Female

3948

2.01

(1.63 to 2.48)

3.67

(2.04 to 6.61)

1.60

(1.23 to 2.09)

3.02

0.082

 By country of primary medical qualification

  UK trained

13,487

2.07

(1.84 to 2.33)

2.71

(1.95 to 3.76)

1.60

(1.38 to 1.84)

19.84

< 0.001

  Foreign trained

5847

2.49

(2.17 to 2.86)

4.66

(3.15 to 6.90)

1.89

(1.57 to 2.28)

11.28

< 0.001

Sensitivity analyses

 Follow-up until 30/11/2014 (based on HES + ESR)

19,334

2.08

(1.90 to 2.27)

2.95

(2.08 to 4.18)

1.73

(1.54 to 1.95)

10.18

0.001

 Follow-up until 31/03/2015 (based on HES + ESR)

19,334

1.98

(1.80 to 2.18)

2.53

(1.72 to 3.72)

1.37

(1.20 to 1.57)

32.80

< 0.001

 Follow-up until 31/03/2015 (based on HES only)

19,334

1.61

(1.43 to 1.81)

0.57

(0.08 to 4.13)

1.14

(0.83 to 1.57)

4.10

0.043

 Parametric model—Exponential

19,334

2.67

(2.44 to 2.91)

4.14

(3.23 to 5.29)

2.20

(1.98 to 2.45)

15.72

< 0.001

 Parametric model—Weibull

19,334

2.67

(2.43 to 2.92)

4.14

(3.23 to 5.30)

2.21

(1.97 to 2.47)

15.70

< 0.001

 Parametric model—Gompertz

19,334

2.38

(2.17 to 2.62)

3.63

(2.82 to 4.67)

1.89

(1.69 to 2.12)

23.02

< 0.001

 Parametric model—Log-Normal

19,334

0.36

(0.26 to 0.49)

0.15

(0.07 to 0.31)

0.50

(0.39 to 0.64)

20.40

< 0.001

 Parametric model—Log-Logistic

19,334

0.72

(0.69 to 0.76)

0.58

(0.49 to 0.67)

0.83

(0.79 to 0.87)

39.23

< 0.001

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BMC Medicine

ISSN: 1741-7015

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