Table 2.

Number of controls and NHL cases, OR, and 95% CI associated with type of tobacco smoking

Tobacco
Blond
Black
Mixed
Controls/casesOR95% CIControls/casesOR95% CIControls/casesOR95% CI
Cigarettes status
    Never smokers811/5811.0811/5811.0811/5811.0
    Ever smokers419/3811.41.1–1.7148/1160.840.61–1.2366/3271.20.91–1.5
    Former153/1551.51.1–1.9107/860.890.62–1.3154/1361.10.80–1.5
    Current266/2261.31.1–1.741/300.720.41–1.3212/1911.20.91–1.6
Pack-years of smokinga
    ≤12210/1591.31.0–1.742/310.800.47–1.354/371.00.65–1.7
    13–29142/1351.51.1–2.048/370.880.53–1.5123/1001.10.79–1.5
    ≥3067/871.40.97–2.058/480.850.53–1.4189/1901.20.93–1.6
Age (yr) started smokinga
    <1584/661.51.0–2.240/290.920.53–1.6117/1121.30.97–1.9
    15–1778/711.61.1–2.318/221.50.74–2.969/621.30.86–1.9
    18–20149/1381.41.0–1.857/490.880.55–1.4136/1110.970.70–1.3
    21–2331/200.810.44–1.510/20.220.04–1.119/181.20.60–2.4
    ≥2477/861.51.1–2.123/140.520.25–1.125/241.10.57–2.0
Years since quitting smokinga
    1–436/382.01.2–3.36/81.80.60–5.729/231.00.56–1.9
    5–941/341.30.80–2.218/170.860.42–1.842/421.20.75–2.0
    ≥1076/831.40.99–2.083/610.840.56–1.383/711.00.71–1.5
  • Note: OR and 95% CI were adjusted for age, sex, area of residence, education level, and type of interview.

  • a Those with missing information in these categories (51) were excluded from the analyses.