Table 5 Results of discrete time hazard model

Marriage duration

0.179***

0.023

0.118***

0.035

Square of marriage duration

−0.006***

0.001

−0.004***

0.001

Marriage cohort (before 1980 = 0)

1980–1989

1.233***

0.129

0.710*

0.340

1990–1999

1.814***

0.138

0.987**

0.363

2000–2010

2.396***

0.171

0.246

0.543

City (countryside = 0)

0.601***

0.093

0.586***

0.093

Wife’s first marriage age

−0.023*

0.011

−0.026*

0.011

Wife’s education level (elementary and below = 0)

Secondary school

0.295*

0.129

0.293*

0.129

High school

0.328*

0.153

0.327*

0.153

College and above

0.343

0.210

0.347+

0.210

Missing value

3.411***

0.114

3.371***

0.114

Number of children

No. of children aged 0

−1.800***

0.310

−1.754***

0.310

No. of children aged 1–5

−0.624***

0.092

−0.767***

0.098

No. of children aged 6–12

−0.695***

0.093

−0.736***

0.097

No. of children aged 13 and above

−0.623***

0.107

−0.545***

0.105

Having son (no = 0)

−0.203*

0.100

−0.218*

0.099

Marriage duration*1980−1989 cohort

0.123*

0.052

Marriage duration*1990−1999 cohort

0.279***

0.074

Marriage duration*2000−2010 cohort

0.945***

0.208

Square of marriage duration*1980−1989 cohort

−0.005***

0.002

Square of marriage duration*1990−1999 cohort

−0.016***

0.004

Square of Marriage duration*2000–2010 cohort

−0.082***

0.020

Intercept

−7.890***

1.285

−7.460***

0.333

Qausi-likelihood radio chi-square

df

Sample size

Person-years