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Table 4 Incidence rates of moderate or severe exacerbations in the propensity score-matched cohort

From: Risk of acute exacerbations in chronic obstructive pulmonary disease associated with biomass smoke compared with tobacco smoke

 

Incidence rate (95% CI)

Incidence rate ratio (95% CI)

P value

Model 1*

More Tobacco-Less Biomass

0.58 (0.33–0.83)

1

 

Less Tobacco-More Biomass

0.68 (0.23–1.13)

1.18 (0.53–2.59)

0.687

Model 2†

More Tobacco-Less Biomass

0.58 (0.32–0.83)

1

 

Less Tobacco-More Biomass

0.69 (0.21–1.17)

1.19 (0.51–2.78)

0.685

Model 3‡

More Tobacco-Less Biomass

0.56 (0.32–0.79)

1

 

Less Tobacco-More Biomass

0.65 (0.22–1.07)

1.16 (0.52–2.58)

0.721

  1. *Model 1: unadjusted
  2. †Model 2: adjusted for sex
  3. ‡Model 3: adjusted for sex, and medication possession ratios of long-acting muscarinic antagonists, long-acting β-agonists, and inhaled corticosteroids during the follow-up period as continuous variables
  4. CI confidence interval
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BMC Pulmonary Medicine

ISSN: 1471-2466

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