Table 3.

Estimates of Multiple Linear Regression Analysis for Birth Weight and Current Smokeless Tobacco Use, Cigarette Smoking, and Waterpipe Smoking

Multiple linear regression analysis
	Coef. (95% CI)	p-Value
Current tobacco use (reference = non-tobacco users)
Exclusive smokeless tobacco use	−0.33 (−0.9, 0.3)	.29
Exclusive cigarette smoking	0.35 (−1.5, 2.2)	.7
Exclusive waterpipe smoking	−0.83 (−1.6, −0.1)	.04
Birth weight constant	3.56 (3.48–3.63)	.00

Note: Total observations = 4507; the absolute numbers of women who exclusively used smokeless tobacco were 63, smoked cigarettes were 7, and smoked waterpipe were 37.