Table 2.
Proportion of Women Who Reported Prenatal Smoking Cessation and Postpartum Relapse and Adjusted Prevalence Ratios (APRs)a
| Smoking status in 3 months before pregnancy | Proportion of prenatal smoking cessationb |
Proportion of postpartum smoking relapsec |
||
|---|---|---|---|---|
| % (95% CI)d | APRe | % (95% CI)f | APRg | |
|
| ||||
| Nondaily smokers (<1 cigarette/day) | 89.7 (87.7–94.4)h | 1.65 (1.58–1.71) | 22.2 (19.5–25.1)h | 0.55 (0.48–0.62) |
| Daily smokers (cigarette(s)/day) | 49.0 (47.9–50.1) | reference | 48.6 (47.0–50.2) | reference |
| 1–5 | 72.8 (71.1–74.5) | 45.3 (43.0–47.7) | ||
| 6–10 | 49.0 (47.0–50.9) | 52.7 (49.8–55.6) | ||
| 11–20 | 31.3 (29.5–33.2) | 49.5 (45.9–53.1) | ||
| 21–40 | 23.3 (19.9–27.1) | 51.5 (42.6–60.3) | ||
| >40 | 32.1 (24.0–41.5) | 53.2 (36.6–69.1) | ||
CI = confidence interval.
Included 31 Pregnancy Risk Assessment Monitoring System states (AK, AR, CO, DE, GA, HI, IL, MA, MD, ME, MI, MN, MO, MS, NE, NJ, NM, NY, OH, OK, OR, PA, RI, TN, TX, UT, VT, WA, WI, WV, and WY) and New York City during 2009–2011.
Prenatal smoking cessation was defined as smoking in the 3 months before pregnancy, but not smoking during the last 3 months of pregnancy (ie, quitting).
Postpartum relapse was defined as smoking at the time of the postpartum survey among women who had quit smoking by the last 3 months of pregnancy.
Proportion (95% CIs) among all smokers in 3 months before pregnancy (unweighted n = 29 752).
APRs (95% CI) among all smokers in 3 months before pregnancy; logistic regression model adjusted for maternal age, race/ethnicity, education level, marital status, pregnancy intention, parity, pre-pregnancy insurance coverage, pre-pregnancy alcohol use, site, and year of birth (unweighted n = 27 360).
Among all quitters by the last 3 months of pregnancy (unweighted n = 14 340).
APRs (95% CI) among all quitters by the last 3 months of pregnancy; logistic regression model adjusted for maternal age, race/ethnicity, education level, marital status, pregnancy intention, parity, pre-pregnancy alcohol use, site, and year of birth (unweighted n = 13 577).
Statistically significant chi-square test (p < .001) of difference between nondaily smokers compared with all daily smokers.