Table 4.

Odds ratios for smoking in Korean women according to work-related characteristics (N = 2,199)

	Crude OR (95% CI)	Adjusted OR (95% CI)*
Occupation
Nonmanual	1	1
Manual	1.49 (0.76–2.93)	2.34 (1.02–5.36)
Service	2.10 (1.25–3.52)	2.37 (1.28–4.40)
Night-shift work
No	1	1
Yes	1.55 (0.92–2.60)	1.38 (0.83–2.29)
Hours worked/wk
<40	0.80 (0.45–1.42)	0.76 (0.41–1.42)
40–48	1	1
49–60	1.93 (1.10–3.39)	2.21 (1.10–3.75)
>60	0.74 (0.36–1.52)	0.75 (0.33–1.72)

CI, confidence interval; OR, odds ratio.

^*Adjusted for age, recent alcohol consumption, household income, education, hours of sleep/night, type of occupation, night-shift work, and hours worked/week.