Table 1. Socio-economic and demographic characteristics of women (N = 3,162 weighted).

Variables		Freq.	%
Mean age at the time of birth (SD)		22.2(4.2)
	15–29	2,982	94.3
	30–49	180	5.7
Marital status
	Married	3,004	95.0
	Not married	158	5.0
Birth order
	1st child	1055	33.4
	2nd or 3rd child	1197	37.9
	4th child or higher	910	28.7
Educational
	No education	334	10.6
	Primary	1253	39.6
	Secondary	1361	43.0
	Higher	214	6.8
Occupation (N = 3,100)
	Not working	986	31.2
	Professional	205	6.5
	Sales	579	18.3
	Agricultural	445	14.1
	Services	76	2.4
	Manual labor	810	25.6
Wealth index
	Poorest	655	20.7
	Poorer	623	19.7
	Middle	626	19.8
	Richer	683	21.6
	Richest	574	18.2
Residence
	Urban	1202	38.0
	Rural	1960	62.0
Region
	Plain	1532	48.5
	Tonle Sap	996	31.5
	Coastal	201	6.4
	Plateau/Mountain	432	13.7
Covered by health insurance
	No	2376	75.1
	Yes	786	24.9
Number of ANC visits
	< 4 ANC	440	13.9
	≥ 4 ANC	2722	86.1

Notes: Survey weights are applied to obtain weighted percentages. *Plains: Phnom Penh, Kampong Cham, Tbong Khmum, Kandal, Prey Veng, Svay Rieng, and Takeo; Tonle Sap: Banteay Meanchey, Kampong Chhnang, Kampong Thom, Pursat, Siem Reap, Battambang, Pailin, and Otdar Meanchey; Coastal/sea: Kampot, Kep, Preah Sihanouk, and Koh Kong; Mountains: Kampong Speu, Kratie, Preah Vihear, Stung Treng, Mondul Kiri, and Ratanak Kiri.