Table 4. Factors affecting second-hand smoke exposure among the non-smokers at any of the public places as per GATS I& II, India.

	SHS exposure at any Public place Adjusted Prevalence Ratio (95% CI)
	GATS-I	GATS–II
Age Groups
Between 15–30 years	1.3 (1.2–1.4)	1.2 (1.2–1.3)
Between 31–45 years	1.2 (1.1–1.2)	1.1 (1.1–1.2)
Above 45 years	1	1
Sex
Male	1.7 (1.6–1.8)	1.8 (1.7–1.9)
Female	1	1
Education
No formal education	0.9 (0.8–1.0)	0.9 (0.9–1.0)
Less than primary	0.9 (0.8–1.0)	1.0 (0.9–1.1)
Primary but less than secondary	0.9 (0.8–1.0)	1.0 (0.9–1.0)
Secondary and above	1	1
Employment
Govt/ Pvt. Employees	1	1
self employed	1.0 (0.9–1.1)	1.0 (0.9–1.1)
Student	1.1 (0.9–1.1)	0.9 (0.8–1.0)
Homemaker	0.9 (0.8–1.0)	0.8 (0.8–0.9)
Unemployed	0.8 (0.7–0.9)	0.8 (0.7–0.9)
Place of residence
Urban	1	1
Rural	1.2 (1.1–1.2)	1.0 (0.9–1.1)
Wealth-index quintile
Poor	0.9 (0.9–1.0)	1.1 (0.9–1.0)
Middle	1.0 (0.9–1.1)	0.9 (0.9–1.0)
Rich	1	1
Region
North	1.4 (1.3–1.5)	1.6 (1.5–1.7)
Central	2.5 (2.3–2.7)	2.1 (2.0–2.3)
East	1.5 (1.4–1.6)	1.4 (1.3–1.6)
North East	1.7 (1.5–1.8)	1.3 (1.2–1.4)
West	1.3 (1.2–1.4)	1.3 (1.2–1.4)
South	1	1
Knowledge smoking cause stroke
Yes	1	1
No	1.0 (0.9–1.1)	0.9 (0.8–1.0)
Knowledge smoking cause a heart attack
Yes	1	1
No	1.1 (0.1–1.1)	0.9 (0.9–1.0)
Knowledge of smoking lung cancer
Yes	1	1
No	0.9 (0.8–1.1)	0.8 (0.7–0.9)
Knowledge smoking causes serious illness
Yes	1	1
No	0.9 (0.8–1.1)	1.1 (0.9–1.2)