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Table 5 Leisure-time exercise and OR of common cold by cigarette smoking categories

From: Smoking, leisure-time exercise and frequency of self-reported common cold among the general population in northeastern China: a cross-sectional study

Frequency of leisure-time exercise Non-smokers Passive smokers Past smokers Current smokers
β OR(95% CI)a P-value β OR(95%CI)a P-value β OR(95% CI)a P-value β OR(95% CI)a P-value
All sample
 Low (< 4 days/month)   Ref    Ref    Ref    Ref  
 Medium (1–2 days/week) −0.204 0.82(0.58–1.15) 0.246 0.079 1.08(0.71–1.65) 0.713 0.917 2.50(0.60–10.46) 0.209 −0.227 0.80(0.41–1.53) 0.495
 High (≥3 days/week) −0.615 0.54(0.35–0.84) 0.006 0.140 1.15(0.69–1.93) 0.595 −1.529 0.22(0.05–0.96) 0.045 −0.381 0.68(0.33–1.43) 0.313
Men
 Low (< 4 days/month)   Ref    Ref    Ref    Ref  
 Medium (1–2 days/week) −0.003 1.00(0.49–2.02) 0.994 −0.724 0.48(0.20–1.20) 0.116 0.814 2.26(0.53–9.71) 0.274 −0.217 0.80(0.41–1.57) 0.523
 High (≥3 days/week) −0.128 0.88(0.37–2.09) 0.772 −0.200 0.82(0.31–2.17) 0.688 −1.532 0.22(0.05–0.96) 0.045 −0.391 0.68(0.32–1.43) 0.306
Woman
 Low (< 4 days/month)   Ref    Ref        
 Medium (1–2 days/week) −0.221 0.80(0.54–1.20) 0.283 0.231 1.26(0.77–2.05) 0.351     
 High (≥3 days/week) −0.744 0.48(0.28–0.80) 0.005 0.047 1.05(0.55–1.99) 0.887     
  1. Ordinal logistic regression models were used to analyse the association of leisure-time exercise and OR of the common cold, both globally and stratified by gender
  2. aAdjusted models control for gender, age, ethnicity, education levels, BMI, frequency of drinking, sleep duration, SRSS, SRH, self-perceived life stress, self-perceived work stress, SAS, SDS, LY, NE and MO
  3. Statistical significance: P < 0.05