Table 2– Mean daily respiratory symptom scores, medication use and lung function measurements during the winter of 2006

Health event	Child days n	Subjects n	Mean
Cough at night	26546	344	0.45
Cough during the day	27364	358	0.59
Cough on waking	26528	344	0.44
Wheeze at night	26421	343	0.29
Wheeze during the day	27133	356	0.37
Wheeze on waking	26431	343	0.27
Preventer use	27583	356	1.56
Reliever puffs per day	27277	357	1.08
Lower respiratory symptoms	23475	337	2.40
Upper respiratory symptoms	26860	353	1.57
Evening FEV₁ mL	23428	357	2507
Morning FEV₁ mL	22163	347	2065
Evening PEFR L·min⁻¹	23435	357	282.7
Morning PEFR L·min⁻¹	22456	348	283.0

FEV₁: forced expiratory volume in 1 s; PEFR: peak expiratory flow rate.