Table 2.

Results of multivariate analysis using logistic regression model

Variable	Beta coeff	Wald statistic	P-value	OR	95% CI for OR
Number of pregnancies	−1.40	12.86	0.000	0.18	0.07–0.46
Mothers’ general health	−1.06	7.36	0.007	0.35	0.16–0.75
History of diabetes mellitus/thyroid dysfunction/cardiac disease of mothers	−0.82	8.99	0.003	0.44	0.26–0.75

Note: The level of determining coefficient for the above model was estimated to be 60%.

Abbreviations: coeff, coefficient; OR, odds ratio; CI, confidence interval.