Table 2.

Self-reported asthma triggers as ranked by the proportion of participants who have ever experienced the trigger and by how frequently the trigger was reported.

Trigger	% who have ever experienced n = 1202	Trigger	Frequency (weeks/year) n = 1202
Dust or dusting	72	Dust or dusting	18.6
Cold, flu, infections, sinusitis	69	Smoking (e.g. cigarettes or cigars)	14.2
Coughing	68	Coughing	11.3
Smoking (e.g. cigarettes or cigars)	60	Exercise	11.1
Smoke	59	Vacuum cleaning	10.1
Smog, air pollution	58	Perfumes, hairspray or air fresheners	10.0
Exercise	54	Animals	9.6
Strong odours	54	Smog, air pollution	9.5
Weather changes	51	Smoke	9.0
Mould and mould spores	51	Emotions	8.2
Animals	50	Cleaning products	8.2
Damp places	48	Damp places	8.1
Humidity	48	Weather changes	8.0
Perfumes, hairspray or air fresheners	48	Humidity	7.9
Grass, mowing the lawn, weeds	47	Strong odours	7.6
Cold air	45	Mould and mould spores	7.4
Emotions	43	Cold air	7.2
Cleaning products	42	Grass, mowing the lawn, weeds	6.9
Vacuum cleaning	41	Lying flat	6.8
Feathers	40	Cold, flu, infections, sinusitis	6.7
Air conditioning	37	Air conditioning	5.8
Lying flat	29	Feathers	5.4
Your work environment	25	Your work environment	4.8
Rain	19	Rain	3.4
Food, drinks or food colourings	19	Food, drinks or food colourings	3.1
Alcohol	18	Indigestion or heart burn	2.8
Other medications	18	Alcohol	2.4
Indigestion or heart burn	17	Aspirin	2.1
Eating out at particular restaurants	15	Other medications	2.0
Aspirin	15	Eating out at particular restaurants	1.8
Hormonal changes	14	Hormonal changes	1.8
Paracetamol	12	Paracetamol	1.6