Table 1.

Comparison of maternal and infant characteristics between the intervention and control arms at the individual level, Hunan, China, 2011-2012.

Characteristics		Intervention arm (N=6771), n (%)	Control arm (N=6966), n (%)
Gravidity
	>1	3285 (48.52)	3478 (49.93)
	1	3486 (51.48)	3488 (50.07)
Parity
	>1	3883 (57.35)	4316 (61.96)
	1	2253 (33.27)	2039 (29.27)
Rural resident		6388 (94.34)	6389 (91.72)
High-risk pregnancy		2488 (36.75)	2841 (40.78)
Fetal gender
	Female	3057 (45.15)	3639 (52.24)
	Male	3684 (54.41)	3304 (47.43)