Table 2.

Demographic and Clinical Characteristics according to Smoking Status in Pregnancy; Pooled Hispanic Datasets, Massachusetts 2006–2011.

	Smoking Status in Pregnancya						p-valueb
	Non-Smoker (N=2,353)		Former Smoker (N=300)		Current Smoker (N=334)
	mean	SD	mean	SD	mean	SD
Age (years)	24.2	5	23.2	4.6	24.2	5.2	0.02
Prepregnancy BMI (kg/m2)	26	6.1	27.2	7.4	26.4	6.3	<0.01
Weight at delivery (pounds)	177.2	36.6	188.0	44.3	182.3	38.1	<0.01
Gestational Weight Gain (pounds)	31.1	15.8	33.8	18.4	31.6	19.1	0.03
	n	%	n	%	n	%
Age (years)
13–19	595	25.3	64	21.3	74	22.2	<0.0001
20–24	781	33.2	143	47.7	127	38
25–29	504	21.4	57	19	71	21.3
≥30	473	20.1	36	12	62	18.6
Parity
0 live births	1007	43.4	128	43.2	99	29.8	<0.0001
1 live birth	713	30.7	91	30.7	98	29.5
≥2 live births	602	26	77	26	135	40.7
Prepregnancy BMI (kg/m2)
Underweight (<18.5)	129	5.5	11	3.7	18	5.4	0.23
Normal weight (≥18.5–<25)	1094	46.8	131	43.8	149	44.6
Overweight (≥25–<30)	606	25.9	76	25.4	79	23.7
Obese (≥30)	511	21.8	81	27.1	88	26.4
Adherence to Weight Gain Recommendations
Inadequate gain	470	20.4	48	16.4	72	22.4	<0.01
Appropriate gain	582	25.3	49	16.8	68	21.1
Excessive gain	1253	54.4	195	66.8	182	56.5

Abbreviations: BMI (body mass index), kg/m² (kilograms per meter squared)

^aNumbers may not add to total due to missing data.

^bP values derived from ANOVA F-test for continous data and chi-square tests for categorical data.