Table 4 Relation between different levels of exposure to ETS and severity of respiratory problems of adult non-smokers in Aleppo-Syria
| Â | ETS score* | Â | |
|---|---|---|---|
Severity of respiratory problems | middle | high | P Dose-response |
Number of wheezing attacks in the past year (≤12 vs. >12) | 0.6 (0.2–2.2) | 1.2 (0.3–4.5) | 0.6 |
Number of episodes of sinusitis (once vs. more than once) | 0.5 (0.2–1.4) | 1.2 (0.4–4.1) | 0.3 |
Number of episodes of acute lower respiratory tract infection (once vs. more than once) | 1.4 (0.4–4.6) | 0.7 (0.2–2.3) | 0.3 |
Past year doctor's or hospital visit because of respiratory problems | 1.4 (0.9–2.1) | 1.2 (0.7–2.0) | 0.4 |
Past month medication use for respiratory problems | 1.0 (0.5–1.7) | 1.0 (0.5–1.9) | 0.7 |