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Table 1 Association between ETS exposure abd self-reported chronic cough in man.

From: Analysis and evaluation of environmental tobacco smoke exposure as a risk factor for chronic cough

  ETS exposure (hours/week)   
n = 514 male      Odds ratio (95% CI)
  0 1–9 10–39 >40 Heavy vs. no exposure Any vs. no exposure
at home 3.0 2.9 4.3 4.3** 1.33 (0.80, 2.08) 1.11 (0.89, 1.38)
Small spaces 2.8 3.2 3.4 4.7*** 1.72 (1.23, 2.36) 1.25 (1.04, 1.05)
Large indoor areas 2.8 3.1 4.2 3.7* 1.26 (0.78, 1.94) 1.20 (0.99, 1.45)
Total exposure 2.7 2.9 3.3 4.4*** 1.60 (1.22, 2.10) 1.22 (1.00, 1.49)
  1. Entries were age-adjusted per 100 individuals by level of ETS exposure. * linear trend < 0.05, ** < 0.005, < 0.0001. Odds ratios were adjusted for age, alcohol consumption, body mass index, diabetes, ethnicity, education status, hypertension, marital status, physical activity at work, serum total cholesterol, and individual occupational hazards. Standard deviation (SD) for home exposure = 19.9 hours/week; SD for small spaces exposure = 15.5 hours/week; SD for large indoor areas exposure = 13.4 hours/week; SD for total exposure = 24.7 hours/week. Modified from [60].
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