Multivariate analysis of SGRQ-improved versus non-improved participants
| Variable | OR | 95% CI | p Value |
|---|---|---|---|
| Age, year | 0.99 | 0.95 to 1.02 | 0.465 |
| Duration of smoking, year | 1.00 | 0.97 to 1.03 | 0.888 |
| TDS score | 1.35 | 1.15 to 1.59 | <0.001 |
| Mental disorder | 1.20 | 0.67 to 2.14 | 0.535 |
| Bronchial asthma | 1.39 | 0.65 to 3.04 | 0.396 |
SGRQ, St. George's Respiratory Questionnaire; TDS, Tobacco Dependence Screener test.