Table 4.

ORs and 95% CIs associated with estimated exposure to air pollution from the Mae Mo Center and with domestic sources of fumes

No. casesNo. controlsOR* (95% CI)OR (95% CI)
Cumulative index of exposure to SO2 or NO2, tons/√km/y
    <1,808546211
    1,808-3,50786721.4 (0.8-2.2)1.3 (0.8-2.1)
    >3,50771661.2 (0.8-2.1)1.2 (0.7-2.0)
Cumulative index of exposure to suspended particulate, tons/√km/y
    <214566111
    214-39284701.3 (0.8-2.1)1.2 (0.7-2.0)
    >39271671.1 (0.7-1.9)1.1 (0.7-1.8)
Cumulative index of exposure to domestic fumes, y
    <9515011
    9-1467501.3 (0.8-2.2)1.3 (0.7-2.2)
    15-2043500.8 (0.5-1.5)0.8 (0.4-1.4)
    21+50491 (0.6-1.7)0.8 (0.5-1.5)
Nonsmokers only
    Cumulative index of exposure to SO2 or NO2/suspended particulate§
        <1,808/<2143181
        ≥1,809/≥21513263.4 (0.7-23.3)
    Cumulative index of exposure to domestic fumes, y
        <1511301
        ≥155140.4 (0.1-2.0)
  • NOTE: ORs were adjusted for sex, age, and cumulative amount of cigarettes smoked. Only population controls were included.

  • * Adjusted for sex and age.

  • Adjusted for sex, age, and cumulative amount of cigarettes smoked.

  • Reference category.

  • § The two indexes coincide in this subgroup.