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

The Journal of Chinese Sociology

Table 6 Results of split-population model

	Model 1		Model 2
	Coefficient	Standard error	Coefficient	Standard error
The proportion of couples who do not divorce (p)
Marriage cohort (before 1980 = 0)
1980–1989	−1.020***	0.137	−1.231***	0.188
1990–1999	−1.151***	0.144	−1.271***	0.210
2000–2010	−1.101***	0.173	−1.119***	0.265
City (countryside = 0)			−0.656***	0.110
Wife’s first marriage age			0.021	0.014
Wife’s education level (elementary and below = 0)
Secondary school			−0.224+	0.135
High school			−0.214	0.162
College and above			−0.238	0.223
Missing value			−3.856***	0.147
Number of children
Children aged 0			1.903***	0.336
Children aged 1–5			1.027***	0.112
Children aged 6–12			0.957***	0.108
Children aged 13 and above			0.803***	0.120
Having son (no = 0)			0.335**	0.109
Intercept	3.861***	0.104	2.914***	0.360
LocationpParameter (ln_lambda)
Marriage cohort (before 1980 = 0)
1980–1989	−1.387**	0.476	−0.479	0.476
1990–1999	−0.759+	0.461	−0.021	0.478
2000–2010	−1.244*	0.541	−0.150	0.557
Intercept	−3.593***	0.347	−5.392***	0.385
Shape parameter (ln_gamma)
Marriage cohort (before 1980 = 0)
1980–1989	0.326**	0.125	0.163	0.104
1990–1999	0.344**	0.129	0.231*	0.104
2000–2010	0.697***	0.138	0.490***	0.119
Intercept	0.232*	0.099	0.538***	0.084
Wald chi-square	81.88***		959.39***
df	3		14
Sample size	16,472		16,472
Person-years	408,487		408,487