| ETS score* |  | |
---|---|---|---|
Self-reported respiratory symptoms/diagnoses | middle | high | P Dose-response |
General respiratory symptoms | Â | Â | Â |
Past year recurrent cough (≥ 3 recognizable episodes) | 1.3 (0.8–1.9) | 1.9 (1.2–2.9) | 0.004 |
Past year recurrent shortness of breath (≥ 3 recognizable episodes) | 1.6 (1.1–2.3) | 1.7 (1.1–2.6) | 0.001 |
Past year recurrent exertional shortness of breath that disappears after rest | 1.8 (1.2–2.7) | 2.0 (1.3–3.2) | <0.001 |
Past year recurrent shortness of breath almost all the time | 3.0 (1.3–6.8) | 2.6 (1.1–6.3) | 0.02 |
Symptoms/diagnosis suggestive of asthma | Â | Â | Â |
Past year wheezing/whistling in the chest | 1.4 (0.8–2.2) | 1.7 (1.0–2.8) | 0.05 |
Past year recurrent episodic dry cough accompanied by wheezing/whistling | 1.9 (1.0–3.7) | 1.9 (0.9–3.9) | 0.05 |
Past year recurrent nocturnal cough, not related to colds, that wakes the subject up | 1.2 (0.7–1.9) | 1.9 (1.1–3.2) | 0.02 |
Past year recurrent episodic shortness of breath accompanied by wheezing | 2.2 (1.1–4.4) | 1.6 (0.7–3.7) | 0.06 |
Ever diagnosed asthma | 1.8 (1.2–2.8) | 1.4 (0.9–2.4) | 0.1 |
Hay fever (nasal allergy symptoms with eye itching and watering) | 0.9 (0.6–1.3) | 1.5 (0.9–2.3) | 0.01 |
Symptoms/diagnosis suggestive of chronic bronchitis | Â | Â | Â |
Productive cough that lasts most of the winter | 1.2 (0.7–2.2) | 1.6 (0.8–2.9) | 0.2 |
Recurrent shortness of breath accompanied by cough and phlegm | 2.2 (1.1–4.7) | 2.5 (1.1–5.6) | 0.02 |
Ever diagnosed chronic bronchitis/emphysema | 1.1 (0.5–2.2) | 1.2 (0.5–2.7) | 0.6 |
Symptoms/diagnosis suggestive of respiratory infection | Â | Â | Â |
Past year recurrent cough accompanying upper respiratory infections (cold, flue) | 1.0 (0.7–1.6) | 1.5 (0.9–2.4) | 0.1 |
Past year recurrent cough with bloody phlegm | 1.1 (0.5–2.6) | 1.4 (0.6–3.4) | 0.7 |
Past year sinusitis | 1.0 (0.6–1.7) | 1.7 (1.0–2.9) | 0.09 |
Past year diagnosed acute lower respiratory infection (bronchitis, pneumonia) | 1.3 (0.7–2.3) | 1.9 (1.1–3.6) | 0.03 |