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. Author manuscript; available in PMC: 2012 Aug 1.
Published in final edited form as: J Allergy Clin Immunol. 2011 May 13;128(2):403–411.e3. doi: 10.1016/j.jaci.2011.04.006

Table 1.

Subject Characteristics

Asthma (21) Controls (25) p Value
Gender (F/M) 12/9 18/7 0.29
Age 27 ± 2 31 ± 2 0.17
Ethnicity* 1A:7AA:12W 1A:13AA:11W 0.52
FEV1 (L) 3.69 ± 0.2 3.28 ± 0.2 0.06
FEV1 (% pred.) 83 ± 4 103 ± 4 0.0005
FVC (L) 4.4 ± 0.2 3.9 ± 0.2 0.10
FEV1/FVC 83 ± 2 86 ± 1 0.23
PC20 (mg/mL)† 0.46 ± 0.10 >16 0.0001
*

A: Asian; AA: African-American; W: White

†

The provocative concentration of methacholine resulting in a 20% fall in FEV1.