Table 1.

Demographic Characteristics of Cold Cohort^*

	Cold Cohort (n =134)
Female, n (%)	93 (69.4)
Race or ethnicity, n (%)†
White, non-Hispanic	100 (74.6)
Black, non-Hispanic	19 (14.2)
Hispanic	8 (6.0)
Other	7 (5.2)
Age, years	38.7 ± 11.7
Subjects per center, n (%)
Boston	25 (18.7)
Denver	18 (13.4)
Madison	29 (21.6)
San Diego	11 (8.2)
San Francisco	17 (12.7)
Saint Louis	16 (11.9)
Winston-Salem	18 (13.4)
Pre-bronchodilator FEV1
Liters	2.69 ± 0.73
% predicted	80.0 ± 14.5
Total serum IgE, IU/ml‡	99.6, 115
Atopic, n (%)§	56 (96.6)
Prior tobacco use, n (%)†	26 (19.4)
Entry mini-ACQ score **	1.04 ± 0.77

^*Plus-minus values are means ± standard deviation (SD)

^†Race, ethnicity, and prior tobacco use were self-reported

^‡n = 132, reported as geometric mean and coefficient of variation (%)

^§n = 58

^**n = 125, scores can range from 0 (no symptoms) to 6 (severe symptoms)

Abbreviations: FEV₁, forced expiratory volume in one second; IU, International Unit; ACQ, asthma control questionnaire.