Table 3. Fully adjusted mortality model stratified by FEV₁% predicted and airflow obstruction.

Chronic cough status	FEV1 <80% pred (n=3,516)			FEV1 ≥80% pred (n=19,303)			FEV1/FVC <0.7 (n=2,660)			FEV1/FVC ≥0.7 (n=20,162)
	OR	95% CI		OR	95% CI		OR	95% CI		OR	95% CI
No chronic cough	Ref			Ref			Ref			Ref
Dry chronic cough	0.80	(0.40–1.63)		0.72	(0.39–1.34)		1.00	(0.47–2.13)		0.72	(0.41–1.28)
Productive chronic cough	1.14	(0.58–2.21)		1.72	(0.92–3.22)		0.85	(0.41–1.77)		1.90	(1.09–3.31)

Data shown as estimated mean odds ratio and 95% CI and adjusted for age, sex, BMI, smoking status, respiratory diseases (asthma, COPD, influenza in the past 12 months, pneumonia in the past 12 months). Number of participants for each category showed in brackets. FEV₁, forced expiratory volume in 1 second; FVC, forced vital capacity; OR, odds ratio; CI, confidence interval; BMI, body mass index; COPD, obstructive pulmonary disease.