Breast feeding and postpartum smoking
abstinence
The analyses included 182 participants who provided complete
data. Missing data occurred primarily because of failure to report
income at the baseline visit (n = 29) and failure to report
breast-feeding status at 8 weeks postpartum (n = 52). In all
cases, missing data on breast-feeding status at the 8-week postpartum
assessment were due to women failing to attend that
session. Participants who provided breast-feeding status did not
differ from participants who were missing breast-feeding status
on age, race/ethnicity, partner status, education, income, or
intervention group. Notably, participants with missing breastfeeding
status smoked more cigarettes per day prior to quitting
(p < .001) but were less likely to smoke within 5 min of waking
(p = .009).