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. Author manuscript; available in PMC: 2019 Dec 1.
Published in final edited form as: J Allergy Clin Immunol. 2018 Feb 10;142(6):1773–1780.e9. doi: 10.1016/j.jaci.2017.12.1004

Table 1.

Demographics and pulmonary function test results and indices of study subjects

Index Normal
(n=33)		 Asthma
Non-severe
(n=63)		 Severe
(n=89)		 All Asthma
(n=152)
Age(years) 31.6 (9.2) 33.3 (11.2) 38.4 (13.2) 36.4 (12.5)
Gender, F:M 12:21 39:24 51:38 90:62
Smoking history (pack years) 0.27 (0.48) 1.31 (1.48) 1.99 (2.09) 1.73 (1.87)
Asthma duration (years) - 19.5 (11.4) 23.8(13.1) 22.1 (12.6)
Body mass index (kg/m2) 27.4 (8.8) 28.4 (6.9) 30.2 (7.2) 29.4 (7.1)
Baseline FEV1 (% predicted) 99.4 (9.2) 86.2 (17.3) 63.1 (22.4) 72.5 (23.1)
Baseline FVC (%predicted) 99.7 (9.7) 97.5 (13.6) 80.3 (18.5) 87.4 (18.7)
Baseline FEV1/FVC (% predicted) 99.6 (6.4) 88.0 (11.8) 74.7 (19.4) 80.2 (17.9)
Post- bronchodilator FEV1 (% predicted) - 92.4 (17.8) 70.9 (21.3) 80.1 (22.4)

Data expressed as mean (SD). FEV1-forced expiratory volume in 1 second; FVC = forced vital capacity.