TABLE 1.

ASTHMA SEVERITY AND SYMPTOM SCORES AT ACUTE AND BASELINE VISITS

	Acute Cold	Cold Resolution, Convalescent Baseline
Peak cold symptom score	17.8 ± 5.9	2.6 ± 3.6
Peak asthma symptom score	7.7 ± 5.3	0.5 ± 1.4
FEV1, % predicted: mean ± SD	89.2 ± 13.3	95.9 ± 12.1
Methacholine PC20, mg/ml: median (IQR)	1.1 (0.4, 2.5)	1.3 (0.6, 5.5)
Virus detection	22 participants, 18 with RV	Not determined
Chlamydia pneumoniae/Mycoplasma pneumoniae serology	0 participants with acute profile	30 participants with prior exposure

Definition of abbreviations: IQR = interquartile range; methacholine PC₂₀ = provocative concentration of methacholine causing a 20% fall in FEV₁; RV = rhinovirus.

Thirty-five participants were enrolled and 32 completed all visits. The median and interquartile range of the age distribution was 20 (18, 23) years. Seventeen of 35 participants were male. The lowest acute values of FEV₁% predicted and methacholine PC₂₀ are reported from participants with paired values at the convalescent baseline.