Socio-demographic characteristics and outcomes of pregnant women who delivered prior to and after the termination of the one-child policy in China: a comparative study

Table 1 Comparison of socio-demographic characteristics

Variable		2012 (N = 3480)		2014 (N = 4044)		2016 (N = 4194)		x²	P
Variable		n	%	n	%	n	%	x²	P
Primipara		2640	76.86	2593	64.12	2134	50.89	512.52	< 0.001
Multipara		840	24.14	1451	35.88	2060	49.12	512.52	< 0.001
Maternal age ≥ 35		228	6.55	355	8.78	607	14.47	143.63	< 0.001
For primipara ≥35		78	2.95	75	2.89	85	3.98	25.04	< 0.001
For multipara ≥35		150	17.86	278	19.16	522	25.34	28.91	< 0.001
Education	≥Secondary	2380	70.50	2934	74.64	3051	75.74	28.35	< 0.001
Education	Missing	104	–	113	–	166	–
Gravidity	≥2	1803	51.81	2252	55.69	2672	63.71	117.61	< 0.001
Overweight or obese		2390	68.67	2752	68.07	2189	52.19	300.11	< 0.001
Previous CS		380	25.03	688	42.47	868	49.60	132.89	< 0.001
Abortion history		1363	39.17	1377	34.05	1465	34.93	23.86	< 0.001
Delivery hospital	Provincial	1276	36.67	1625	40.18	2021	48.19	192.55	< 0.001
	Municipal	1408	40.46	1557	38.50	1637	39.03
	Community	796	22.87	862	21.32	536	12.78

ISSN: 1471-2393