Table 1.

Distribution by age, physiological status, trimester of pregnancy, and socioeconomic level of participant women.

Characteristic	Pregnant	Lactating	Total	Percentage
	(n = 153)	(n = 155)	(n = 308)	(%)
Age (years)
18–24	30	48	78	25.3
25–29	41	34	75	24.4
30–34	50	29	70	25.6
35–39	17	34	51	16.6
40–45	15	10	25	8.1
Trimester of pregnancy
First	42	—	42	27.5
Second	56	—	56	36.6
Third	55	—	55	35.9
Socioeconomic level*
A/B/C+	34	21	55	18
C	64	68	132	43
D+/D	55	66	121	39

*The highest s-e level corresponds to “A” [9].