3.

1990—2010年中国女性青少年已婚率和生育率与人均GDP的关联

Associations of adolescent marriage and childbirth with GDP per capita in China, from 1990 to 2010

Item	n	logGDP		logGDP×year
		β(95%CI)a	P
a, unit of this column is % for the ever-married rate and per 1 000 for the fertility rate. This table shows the results of the weighted linear regression models. The dependent variables are the ever-married rate and the fertility rate, while the independent variable is logGDP (or are logGDP, year and [logGDP×year]). logGDP, the natural logarithm of GDP per capita; GDP, gross domestic product.
Ever-married rate
1990	30	-1.1(-3.5, 1.3)	0.345	Reference
2000	31	-1.4(-2.7, -0.1)	0.031	P=0.876
2010	31	-1.5(-2.9, -0.1)	0.040	P=0.877
Fertility rate
1990	30	-5.2(-14.0, 3.7)	0.241	Reference
2000	31	-7.9(-12.8, -2.9)	0.003	P=0.708
2010	31	-6.7(-10.1, -3.2)	<0.001	P=0.852