Table 1 Patient demographics.

	Total patients	Male n (%)	Mean age (years)	Age range (years)
Asthma	865	361 (41.7)*	48.2†	20–104
Allergic rhinitis	647	267 (41.3)*	42.2†	20–91
Chronic disease	488	209 (42.8)*	64.2†	20–94
Controls	5235	2766 (52.4)*	47.1†	20–105

*There were significantly more women in the groups with asthma, allergic rhinitis and chronic disease than the control group (p<0.001).

†The chronic disease cohort was significantly older than the groups with asthma, allergic rhinitis and the remaining control group (p<0.001).