Table 2

Asthma Control Questionnaire data

	Normal	Controlled asthma	Uncontrolled asthma
All questions	0.0 (0–0)^*	1.0 (0–1)^*	2.0 (2–3.5)^*
Nocturnal waking	0.0 (0–0)^*	0.0 (0–1)^*	2.0 (1–2)^*
Morning symptoms	0.0 (0–0)^*	1.0 (0–1)^*	2.0 (2–3)^*
Activity limitation	0.0 (0–0)^*	0.5 (0–1)^*	1.5 (1–2)^*
Short of breath	0.0 (0–0)^*	1.0 (1–1)^*	2.0 (2–3)^*
Wheeze	0.0 (0–0)^*	1.0 (0.25–1)^*	2.0 (1.25–2.75)^*
FEV₁ %pred	0.0 (0–0)^*	1.0 (1–2)^*	4.0 (4–5)^*
β2-agonist alone	0.0 (0–0)^*	1.0 (0.25–1)^*	3.5 (3–4)^*

Total and single item questionnaire data, presented as median (25th–75th centiles). There was a significant difference between the groups.
↵* p<0.001 for each single question and the total score.
FEV₁, forced expiratory volume over 1 s.