Electronic cigarettes may not be a “safer alternative” of conventional cigarettes during pregnancy: evidence from the nationally representative PRAMS data

Table 3 Results from weighted logistic regression after matching: effects of prenatal electronic cigarette use on adverse outcomes compared to different reference groups

Reference group	SGA		LBW		Preterm birth
Reference group	OR	95% CI	OR	95% CI	OR	95% CI
Complete abstainers	1.76	1.04–2.96*	1.53	1.06–2.22*	1.86	1.11–3.12*
CC smokers	0.67	0.30–1.47	0.71	0.37–1.37	1.06	0.46–2.48

*: p<0.05
OR Weighted, adjusted odds ratio, CI Confidence interval, CC Conventional cigarette, SGA Small-for-gestational-age, LBW Low birthweight
Note: Statistics represent the Odds Ratio (95% Confidence Interval (CI)). EC users were exact-matched to the respective reference group based on the maternal race, age, educational attainment, family income, prenatal care adequacy, and conventional cigarette smoking status of the first and second trimester.

ISSN: 1471-2393