TABLE 1—

Patterns of Maternal Perinatal Smoking Status: Oregon PRAMS, 2000–2001

	Self-Reported Smoking Status
Patterns of Perinatal Cigarette Usea	3 Months Before Pregnancy	1st Trimester	2nd Trimester	3rd Trimester	Postpartum Period	No. of Women,b n = 3047	Weighted Distribution, %
Nonsmokers	N	N	N	N	N	2465	79.1
Quitters	Y	N	N	N	N	138	5.8
	Y	N	Y	N	N	1	0.0
	Y	Y	N	N	N	52	1.5
	Y	Y	Y	N	N	14	0.6
Subtotal						205	7.8
Light postpartum relapsers	Y	N	N	N	Y-low	50	1.8
	Y	Y	N	N	Y-low	40	1.1
	Y	Y	Y	N	Y-low	18	0.8
	Y	N	Y	N	Y-low	3	0.1
Subtotal						111	3.7
Heavy postpartum relapsers	Y	N	N	N	Y-high	17	0.6
	Y	Y	N	N	Y-high	20	0.6
	Y	Y	Y	N	Y-high	9	0.5
Subtotal						46	1.6
Light persistent smokers	Y	Y	Y	Y	Y-low	74	1.7
Heavy persistent smokers	Y	Y	Y	Y	Y-high	146	6.1

Note. N = did not smoke during the period; Y = did smoke during the period; Y-low = smoked 1–9 cigarettes per day during the period; Y-high = smoked 10 or more cigarettes per day during the period.

^aAmong the total sample of 3881 mothers, we excluded 167 mothers with missing or incomplete smoking pattern data and 63 mothers with smoking patterns that did not fit into 1 of our categories.

^bUnweighted sample distribution.