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Table 4 Odds Ratios (OR) for reporting the presence of at least one respiratory irritation symptom over the past four weeks, from univariate and multivariate analyses

From: Health impacts of exposure to second hand smoke (SHS) amongst a highly exposed workforce: survey of London casino workers

  No Unadjusted OR (95% CI) Adjusted OR (95% CI)‡
Hours worked per week   1.03 (1.00 to 1.07) 1.04 (1.00 to 1.07)
Exposure to SHS at work:    
Not heavily exposed nearly all time 151 1.00 1.00
Heavily exposed nearly all the time 372 2.41 (1.50 to 3.86) 2.24 (1.34 to 3.74)
Household smoking:    
Does not live with smoker 404 1.00 1.00
Lives with smoker 119 1.50 (0.82 to 2.71) 1.43 (0.70 to 2.93)
Smoking status:    
Smoker 119 1.00 1.00
Non-smoker 404 0.68 (0.37 to 1.23) 0.74 (0.36 to 1.53)
Years worked in casinos   1.00 (0.97 to 1.02) 1.01 (0.97 to 1.05)
Gender:    
Male 275 1.00 1.00
Female 248 1.08 (0.68 to 1.72) 1.01 (0.60 to 1.68)
Age:    
16–34 148 1.00 1.00
35–54 306 0.81 (0.47 to 1.40) 0.92 (0.44 to 1.92)
55+ 69 0.61 (0.30 to 1.27) 0.86 (0.30 to 2.50)
Highest qualifications†:    
GCSE D-G or lower 102 1.00 1.00
Degree or higher education qualif 125 1.51 (0.77 to 2.97) 1.39 (0.67 to 2.90)
A levels or ONC/BTEC 143 1.49 (0.78 to 2.87) 1.30 (0.64 to 2.64)
GCSE A-C or equivalent 153 1.69 (0.88 to 3.27) 1.48 (0.73 to 3.01)
  1. ‡All Adjusted Odds Ratios adjusted for other variables presented in the table, using multivariate logistic regression analysis.
  2. †GCSE are qualifications usually taken at the age of 16, at high school. A-levels and ONC/BTEC qualifications are usually taken at the age of 18.