Table 3.

Baseline characteristics of the bronchiectasis study population

Characteristic	Category	Entire study population (n=18,793) (%)
Median age at diagnosis in years (IQR)		61.8 (47.5-72.2)
Median length of time in the study in years (IQR)		7.2 (3.6-7.9)
Gender	Male	7798 (41.5)
	Female	10,995 (58.5)
Smoking habit (ever, closest to diagnosis date)	Never-smoker/not recorded	6003 (31.9)
	Ex-smoker	7118 (37.9)
	Current smoker	5672 (30.2)
Index of multiple deprivation (IMD)	1 (Least deprived)	3082 (16.4)
	2	3013 (16.0)
	3	2243 (11.9)
	4	1935 (10.3)
	5 (Most deprived)	1728 (9.2)
	Unavailable	6792 (36.1)