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. 2015 Feb 20;65(3):245–250. doi: 10.1093/occmed/kqu215

Table 2.

Multivariate logistic regression models predicting self-reported difficulty with physical and cognitive function among construction workers participating in the 2010–11 NHIS

Worker characteristics Model: physical function Model: cognitive function
UOR 95% CI AOR 95% CI UOR 95% CI AOR 95% CI
Tiredness/exhaustion (ref = never tired)
 Tired some days 3.17 1.99–5.06 2.03 1.17–3.51 3.05 1.48–6.31 2.27 1.06–4.88
 Tired most days to every day 4.03 2.07–7.85 2.17 0.97–4.86 2.69 0.94–7.74 1.94 0.62–6.08
Age (ref = 18–44 years old)
 45 years or older 3.64 2.27–5.83 1.79 0.96–3.33
Smoking status (ref = current non-smokers)
 Current smokers 1.34 0.82–2.18 0.85 0.43–1.67
Alcohol consumption status (ref = current non-drinkers)
 Infrequent to light drinkers 1.18 0.62–2.23 1.47 0.60–3.58
 Moderate to heavy drinkers 1.44 0.76–2.73 2.17 0.90–5.22
Hours of sleep (ref = 7 hours or more)
 6 hours or less 0.97 0.69–1.59 0.50 0.24–1.02
Psychological distress (ref = no distress)
 Distress 4.61 2.77–7.66 2.47 1.28–4.78
Arthritis status (ref = no arthritis)
 Yes, doctor diagnosed arthritis 8.25 4.42–15.39 2.77 1.32–5.82

Dependent variable: any difficulty with physical function, all conditions (0 = no difficulty, 1 = difficulty); difficulty with cognitive function (0 = no difficulty, 1 = difficulty).