Smoking in pregnancy: a cross-sectional study in China

Table 3 Odds ratio (95%CI) for identifying factors that affect smoking among pregnant women, China, 2015

Parameter	OR (95% CI)	p-value
Parity
Pregnant women in their second pregnancy vs. Pregnant women in their first pregnancy	1.19(0.73,1.96)	0.482
Education level
Secondary education vs. Basic education	2.69(0.92,7.89)	0.071
Higher education vs. Basic education	5.17(2.00,13.39)	0.001
Residence
Urban vs. Rural	0.55(0.32,0.94)	0.028
Smoking status of Husband
Smoker vs. Non-smoker	1.12(0.73,1.73)	0.606
Smoking status of Father-in-law
Smoker vs. Non-smoker	0.88(0.54,1.42)	0.598
Smoking status of Mother-in-law
Smoker vs. Non-smoker	4.67(1.87,11.70)	0.001

Note: (1) Adjusted OR was adjusted for Parity, Education level, Residence, Smoking status of Husband, Smoking status of Father-in-law, Smoking status of Mother-in-law; (2) Abbreviation: CI confidence intervals, OR: odds ratio

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