Table 1. Baseline demographics of participants who died.

Variables	Subtypes	Deaths: no chronic cough			Deaths: dry chronic cough			Deaths: productive chronic cough
		N	Weighted %		N	Weighted %		N	Weighted %
Deaths		419	1.22		55	1.22		85	3.27
Age category (years)	45–54	22	0.37		3	0.68		5	2.62
	55–64	69	0.92		6	0.45		17	2.08
	65–74	102	1.66		19	1.88		28	4.34
	75–85	226	4.84		27	3.69		35	5.44
Sex	Male	245	1.37		39	1.47		55	3.89
	Female	174	1.07		16	0.98		30	2.41
Body mass index	Under-weight	10	3.64		2	6.30		4	11.44
	Normal	121	1.25		13	0.80		15	1.99
	Overweight	153	1.01		17	1.42		30	3.15
	Obese	130	1.34		20	1.09		34	3.93
Smoking status	Current	49	2.25		8	0.96		27	3.81
	Previous	203	1.51		27	1.66		39	3.70
	Never	164	0.90		19	1.04		19	2.37

Demographics shown in those with no chronic cough, dry chronic cough and productive. Numbers and weighted % shown. Missing data for BMI (n=5) and smoking status (n=3).