Table 5. Risk of Lung Cancer for Living Close to Hazardous Sites.

Hazardous sites within 2 km of residence	Case/control (n)	OR (95% CI)
Bus/taxi terminal
No	825/864	Reference
Yes	83/44	2.01 (1.36–2.98)
Industrial complex
No	794/817	Reference
Yes	114/91	1.18 (0.87–1.61)
Incinerator
No	883/888	Reference
Yes	114/91	1.18 (0.63–2.19)
Sewage treatment plant and landfill sites
No	878/875	Reference
Yes	30/33	0.73 (0.73–1.23)
Transmission tower
No	868/876	Reference
Yes	40/32	1.13 (0.69–1.87)

OR, odds ratio; CI, confidence interval; SHS, secondhand smoke.

Models are adjusted for age, sex, smoking, exposure to SHS at home and work, education, occupational carcinogens, and frequency of fruit intake.