Table 2. Factors significantly associated with low birth weight (Multivariate analysis performed on 1439 women and adjusted on newborn's gender, study, number of consultations, bed net and education).

		Adjusted OR*	95% Confidence interval	p value
First dose intake	6–7 months of gestation	1
	5 months of gestation	0.8	[0.5, 1.3]	0.46
	4 months of gestation	0.5	[0.3, 0.9]	0.01
Interval time between the 2 doses	≤31 days	1
	32–37 days	0.9	[0.5, 1.5]	0.65
	38–61 days	0.7	[0.4, 1.3]	0.3
	>62 days	1.0	[0.6, 1.9]	0.8
Parity	Multigravidae	1
	Primigravidae	2.4	[1.6, 3.6]	<0.001
Underweight	BMI†≥20	1
	BMI<20	1.7	[1.1, 2.5]	0.009
Duration of pregnancy	≥40 weeks of gestation	1
	39 weeks of gestation	2.0	[1.1, 3.7]	0.02
	≤38 weeks of gestation	10.7	[6.2, 18.5]	<0.001
Transmission period	Dose 1 and dose 2 during rainy season	1
	Dose 1 during rainy season and dose 2 during dry season	0.8	[0.4,1.5]	0.50
	Dose 1 during dry season and dose 2 during rainy season	0.8	[0.4,1.4]	0.4
	Dose 1 and dose 2 during dry season	0.6	[0.3,0.9]	0.05

^*OR, odds ratio;

^†Body mass index.