Research Article
Disparities in Prevalence of Smoking and Smoking Cessation during Pregnancy: A Population-Based Study
Table 1
Comparison of some indicators among the three surveys, 2007–2013. Perinatal study, Rio Grande, RS, Brazil.
| | Indicator | 2007 | 2010 | 2013 |
| | Eligible newly delivered women | 2,574 | 2,448 | 2,715 | | Nonresponse rate (%) | 1.3 | 2.8 | 2.3 | | Final sample | 2,540 | 2,379 | 2,653 | | Education (years), mean (SD) | 8.6 (3.5) | 9.0 (3.2) | 9.5 (3.3) | | Monthly family income (Brazilian reais), median | 800 | 1,000 | 1,800 | | Age (years), mean (SD) | 25.6 (6.6) | 25.9 (6.4) | 26.3 (6.5) | | Self-referred skin color as white (%) | 69.2 | 69.4 | 66.1 | | Prevalence of smoking before pregnancy (95% CI) | 27.9 (26.2–29.7) | 26.3 (24.5–28.1) | 22.4 (20.8–24.0) | | Prevalence of smoking during pregnancy (95% CI) | 22.0 (20.4–23.7) | 21.0 (19.3–22.6) | 18.0 (16.6–19.5) | | Prevalence of smoking cessation during pregnancy (95% CI) | 18.0 (15.3–21.1) | 21.1 (17.9–24.5) | 17.6 (14.7–20.9) |
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SD: standard deviation.
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