Odds ratio for airflow limitation in logistic regression analysis
| Odds ratio | ||
| Crude (95% CI) | Adjusted (95% CI)# | |
| Age | 1.13 (1.05–1.22)** | 1.12 (1.04–1.21)** |
| Male | 2.15 (1.38–3.38)*** | 0.98 (0.45–2.10) |
| Body mass index | 0.91 (0.84–0.97)** | 0.87 (0.80–0.94)*** |
| Smoking intensity | ||
| Nonsmokers | 1 | 1 |
| Moderate smokers | 1.80 (0.92–3.39)+ | 2.15 (0.91–5.05) |
| Heavy smokers | 3.22 (1.97–5.31)*** | 3.81 (1.73–8.80)** |
| Never drinkers | 0.72 (0.44–1.13)+ | 1.10 (0.62–1.95) |
| Physically active | 1.07 (0.69–1.69) | |
| Teeth n | 1.01 (0.98–1.04) | |
| Presence of decayed teeth | 1.60 (0.95–2.67)+ | 1.32 (0.74–2.30) |
| Periodontal condition | ||
| No/mild | 1 | 1 |
| Moderate/severe | 1.40 (0.87–2.24)+ | 1.04 (0.62–1.73) |
| Edentulous | 1.44 (0.39–4.30) | 1.31 (0.34–4.27) |
| Total bacterial density on the tongue¶ | ||
| Low | 1 | 1 |
| High | 1.58 (1.02–2.48)* | 1.61 (1.01–2.60)* |
#: each odds ratio was adjusted by age, sex, body mass index, smoking intensity, alcohol intake, presence of decayed teeth and periodontal condition with p-values <0.2 in a bivariate analysis; ¶: stratified by median value; +: p<0.2; *: p<0.05; **: p<0.01; ***: p<0.001.