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Table 4 Results of Cox proportional hazard model

From: Is the “seven-year itch” real?—a study on the changing divorce pattern in Chinese marriages

 

Classic Cox

Stratified Cox

Coefficient

Standard error

Coefficient

Standard error

Marriage cohort (before 1980 = 0)

    

 • 1980–1989

1.253***

0.129

  

 • 1990–1999

1.768***

0.138

 • 2000–2010

2.318***

0.168

City (countryside = 0)

0.569***

0.092

0.556***

0.092

Wife’s first marriage age

−0.026*

0.011

−0.027*

0.011

Wife’s education level (Elementary School or below = 0)

    

 • Secondary school

0.313*

0.129

0.313*

0.129

 • High school

0.348*

0.152

0.350*

0.152

 • College and above

0.368+

0.210

0.375+

0.210

 • Missing value

3.309***

0.113

3.292***

0.113

Number of children

    

 • No. of children aged 0

−1.874***

0.311

−1.820***

0.312

 • No. of children aged 1–5

−0.830***

0.102

−0.816***

0.104

 • No. of children aged 6–12

−0.700***

0.102

−0.725***

0.105

 • No. of children older than 13

−0.472***

0.110

−0.494***

0.109

Having son (no = 0)

−0.209*

0.098*

−0.212*

0.098

Quasi-likelihood radio chi-square

1471.02***

1249.40***

df

14

11

Sample size

16,472

16,472

Person-years

408,487

408,487

  1. Note: + p < 0.10, *p < 0.05, **p < 0.01, ***p < 0.001