Table 4.

Multivariate analyses for neonatal outcomes: multiple linear regressions

Characteristics	Unadjusted beta (95% CI), P-value	Unstandardized adjusted beta	Model used
			95% CI	P-value	Standardized adjusted beta
Dependent variable: logarithm of Apgar score at 5 minutes*
Daily cigarette packs	−0.016 (−0.027 to −0.006), 0.003	−0.040	−0.059 to −0.022	<0.001	−0.213
Weekly water pipes	−0.010 (−0.017 to −0.002), 0.011	−0.034	−0.047 to −0.021	<0.001	−0.268
Category D drug	−0.036 (−0.061 to −0.012), 0.004	−0.037	−0.079 to 0.005	0.082	−0.088
Category X drug	−0.068 (−0.212 to 0.075), 0.351	−0.227	−0.470 to 0.018	0.070	−0.093
Gestational diabetes	−0.057 (−0.091 to −0.022), 0.001	−0.120	−0.179 to −0.06	<0.001	−0.198
Dependent variable: logarithm of Apgar score at 10 minutes*
Daily cigarette packs	−0.036 (−0.055 to −0.017), <0.001	−0.017	−0.028 to −0.006	0.002	−0.165
Weekly water pipes	−0.036 (−0.049 to −0.023), <0.001	−0.010	−0.017 to −0.002	0.010	−0.137
Gestational diabetes	−0.116 (−0.178 to −0.055), <0.001	−0.055	−0.089 to −0.020	0.002	−0.163
Category D drug	−0.056 (−0.101 to −0.011), 0.014	−0.029	−0.054 to −0.005	0.019	−0.125

Notes:

^*Apgar 5-minute R² = 0.182, Apgar 10-minute R² = 0.093. Collinearity absence was verified. Independent variables entered in the initial model were age of the mother, geographical origin, body mass index before pregnancy, education level, occupation, parity, delivery type, medical problem types during pregnancy (anemia, hypertension, gestational diabetes), weight gain during pregnancy, number of live children, delivery term, and exposure to medications and licit substances.

Abbreviation: CI, confidence interval.