Table 3

ORs of GSTM1*2 and GSTT1*2 in nonsmokers stratified by environmental exposures

GSTM1*2 ORa (95% CI)GSTT1*2 ORa (95% CI)
ETS spouse
Never1.5 (0.7–3.3)1.0 (0.4–2.4)
Ever1.4 (0.5–3.8)0.3 (0.1–0.9)
<119 h/dayb1.0 (0.3–3.3)0.8 (0.2–2.5)
>119 h/day
ETS spouse or work
Never1.2 (0.4–4.2)0.8 (0.2–2.9)
Ever1.7 (0.8–3.4)0.7 (0.3–1.4)
<104 h/day1.8 (0.8–4.4)1.1 (0.5–2.8)
>104 h/day0.3 (0–4.2)0.1 (0–1.9)
Occasional smoking
Never1.4 (0.7–2.7)0.5 (0.2–1.0)
Ever2.1 (0.4–12)1.0 (0.1–6.7)
<4.2 p/lt4.7 (0.3–86)2.0 (0.1–68)
>4.2 p/lt0.5 (0–24)3.4 (0–416)
Occupational
No1.5 (0.8–2.7)0.7 (0.4–1.3)
Yes10.7 (0.4–260)
Residential
Rural3.6 (1.0–13)0.1 (0–0.5)
Mixed1.6 (0.5–5.3)1.9 (0.5–6.7)
Urban0.9 (0.3–2.9)1.0 (0.3–3.4)
Indoor wood combust.
No1.2 (0.5–3.2)0.5 (0.2–1.5)
<20 yr1.3 (0.3–5.2)0.5 (0.1–1.8)
>20 yr3.1 (0.9–9.9)0.5 (0.1–1.5)
  • a Adjusted for gender, age, and center.

  • b h/day, hours/day times years; p/lt, packs/lifetime; ∞, infinite OR, no controls exposed.