Table 4 Model simplification by backwards stepwise selection of multivariable binary logistic model to assess effects of personal and professional characteristics on the probability of working less-than-full-time, 10 years post-graduation, for female doctors

1 (Starting model)

Cohort+Specialty+Children+JobGrade+Spouse+FamilyHome+Specialty*Children+Specialty*Spouse+Specialty*FamilyHome+Specialty*JobGrade+JobGrade*Children+Spouse*Children+Children*FamilyHome+Spouse*FamilyHome

2

- Specialty*Spouse

0.47

3

0.93

3

- FamilyHome*Children

0.61

2

0.74

4

- FamilyHome*Spouse

0.00

1

0.99

5

- Specialty*FamilyHome

1.60

3

0.65

6

- Specialty*JobGrade

4.30

6

0.63

7

- Spouse*Children

1.70

2

0.44

8

- FamilyHome

0.01

1

0.94

7

- Spouse*Children

1.70

2

0.44

8

- FamilyHome

0.01

1

0.94