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. 2017 Dec 1;196(11):1385–1395. doi: 10.1164/rccm.201611-2234OC

Table 1.

Baseline Characteristics of Participants*

  Total Enrolled Completed Screen Failed P Value
Number 38 10 28
Age, yr 26 ± 7 25 ± 5 26 ± 8 0.90
Female/male, n 18/20 3/7 15/13 0.28
FEV1, % predicted 90 ± 16 96 ± 19 88 ± 15 0.21
FEV1/FVC 0.77 ± 0.07 0.78 ± 0.08 0.77 ± 0.07 0.75
Methacholine PC20, mg/ml 1.7 ± 2.8 1.5 ± 2.7 1.8 ± 2.8 0.90

Definition of abbreviation: PC20 = provocative concentration of methacholine causing a 20% fall in FEV1.

*

Data are expressed as means ± SD unless indicated otherwise.

Geometric mean ± median absolute deviation; n = 13 participants for screen failed.