Table 2.
Associated variables with current smoking of asthma and COPD patients
| Asthma | Univariate analysis | Multivariate analysis | |||
|---|---|---|---|---|---|
| Current smoker (N=27) n (%) | Former/never smoker (N=118) n (%) | p | OR (95% CI) | p | |
| Age (years) | 0.005 | 0.020 | |||
| <65 | 26 (96.3) | 83 (70.3) | 12.18 (1.47–100.70) | ||
| ≥65 | 1 (3.70) | 35 (29.9) | Ref | ||
| Comorbid diseases | 0.026 | 0.280 | |||
| Present | 14 (51.9) | 87 (73.7) | 0.57 (0.21–1.57) | ||
| Absent | 13 (48.1) | 31 (26.3) | Ref | ||
| Family history of any pulmonary diseases | 0.023 | 0.016 | |||
| Present | 8 (29.6) | 63 (53.8) | 0.28 (0.10–0.79) | ||
| Absent | 19 (70.4) | 54 (46.2) | Ref | ||
| Asthma control | 0.486 | ||||
| Very poorly controlled | 9 (33.3) | 32 (27.1) | Ref | ||
| Not-well controlled | 4 (14.8) | 30 (25.4) | 1.57 (0.58–4.27) | 0.373 | |
| Well controlled | 14 (51.9) | 56 (47.5) | 0.18 (0.02–1.68) | 0.135 | |
| Diagnosis duration (years), median (IQR) | 3 (9) | 9.5 (11) | 0.006 | 0.90 (0.83–0.98) | 0.024 |
| COPD | Univariate analysis | Multivariate analysis | |||
| Current smoker (N=51) n (%) | Former/never smoker (N=97) n (%) | p | OR (95% CI) | p | |
| Age (years) | <0.001 | 0.001 | |||
| <65 | 33 (64.7) | 33 (34.0) | 3.58 (1.69–7.58) | ||
| ≥65 | 18 (35.2) | 64 (65.9) | Ref | ||
| Exacerbations requiring hospitalization | 0.006 | 0.038 | |||
| 0 | 47 (92.2) | 71 (73.2) | Ref | ||
| ≥1 | 4 (7.8) | 26 (26.8) | 0.26 (0.07–0.93) | ||
| GOLD | 0.608 | 0.595 | |||
| A | 20 (39.2) | 34 (35.0) | Ref | ||
| B | 10 (19.6) | 15 (15.4) | 1.32 (0.46–3.74) | ||
| E | 21 (41.1) | 48 (49.4) | 1.41 (0.57–3.48) | ||
| Diagnosis duration (years), median (IQR) | 4 (6) | 8 (8) | 0.001 | 0.92 (0.86–0.98) | 0.023 |
Factors affecting current smoking were determined by multivariable logistic regression without adjustment. IQR: interquartile range.