Table 3. Logistic model adjusted to odds ratio for low birth weight (n=788).

Variables	Odds ratio (95%CI)	p value
Twins
No (reference)	1.0
Sim	42.5 (11.6-203.8)	< 0.001
Age (years)
<18 (reference)	1.00
18-24	0.4 (0.2-0.8)	0.007
25-29	0.4 (0.1-0.8)	0.018
30-34	0.4 (0.1-1.0)	0.049
≥35	0.7 (0.3-1.9)	0.524
Mode of delivery
Vaginal/forceps (reference)	1.0
Cesarean section	2.3 (1.3-4.2)	0.007

95%CI: 95% confidence interval.