The association between daily 500 mg calcium supplementation and lower pregnancy-induced hypertension risk in Bangladesh

Table 2 Background characteristics of women by calcium consumption level during pregnancy (n = 11,387)

Characteristics	n	500 mg/d calcium intake (%)			P
Characteristics	n	< 3 months	3–6 months	≥6 months	P
Age (years)					< 0.001
< 20	2733	21.08	66.26	12.66
20–24	3237	19.56	64.94	15.51
25–29	3297	17.26	67.52	15.23
≥ 30	2120	22.36	65.09	12.55
Occupation					0.006
Housewife	11,286	19.68	66.16	14.16
Working outside	101	30.69	51.49	17.82
Baseline weight (kg)					0.105
< 45	3585	20.00	64.44	15.56
45–50	3571	19.46	67.04	13.50
51–60	3171	19.55	66.98	13.47
> 60	1060	20.75	65.19	14.06
Parity					0.006
1	2803	20.91	65.93	13.16
2	4452	18.60	65.90	15.50
≥ 3	4132	20.28	66.24	13.48
Number of living children					< 0.001
None	2715	21.22	66.08	12.71
1	5098	18.24	66.40	15.36
≥ 2	3574	20.87	65.47	13.65
Number of antenatal care visits					< 0.001
< 4	1295	86.64	13.36	0.00
4+	10,092	11.20	72.79	16.01
Household type					0.047
Pacca/semi-pacca	1666	21.49	65.85	12.67
Tin and others	9721	19.48	66.06	14.45
Household asset					0.794
Poor	5321	19.51	66.23	14.26
Non-poor	6066	20.01	65.86	14.13
Total	11,387	19.78	66.03	14.19

ISSN: 1471-2393