. Author manuscript; available in PMC: 2010 Jun 1.

Published in final edited form as: J Allergy Clin Immunol. 2009 Jun;123(6):1328–34.e1. doi: 10.1016/j.jaci.2009.04.005

Table 3.

BMI category and physiologic and clinical characteristics of asthma.

Variable	BMI < 25^*	BMI ≥ 25^*	Crude p	Adjusted p^*
FEV₁ (L, prebronchodilator) (n=593/671)	3.05 [2.98, 3.11]	2.91 [2.85, 2.97]	0.0001	0.001
FEV₁ (%, prebronchodilator) (n=593/671)	83.5 [82.5, 84.5]	82.4 [81.5, 83.4]	0.03	0.1
FEV₁/FVC (%)(n=593/671)	72.6 [71.8, 73.4]	71.3 [70.6, 72.1]	0.01	0.01
Morning peak expiratory flow (L/min) (n=592/671)	437.4 [427.6, 447.2]	443.7 [434.4, 453.0]	0.5	0.3
Daily rescue albuterol use (puffs) (n=590/669)	1.08 [0.98, 1.18]	1.2 [1.1, 1.3]	0.05	0.03
PC₂₀ methacholine (mg/mL) (n=531/591)	1.0 [0.86, 1.16]	1.07 [0.93, 1.24]	0.1	0.4
Exhaled nitric oxide (ppb) (n=300/371)	16.0 [14.5, 17.6]	14.9 [13.6, 16.3]	0.1	0.2
Total number of positive skin tests (n=523/604)	5.23 [4.94, 5.51]	5.28 [5.01, 5.55]	0.7	0.8
Asthma-related quality of life (n=492/567)	5.77 [5.69, 5.85]	5.59 [5.52, 5.67]	0.001	0.0004
Mini-ACQ score (n=206/269)	1.09 [1.0, 1.19]	1.09 [1.0, 1.18]	0.7	1.0

n reported for BMI <25/BMI ≥ 25.

Means and p values after adjustment for study, age, gender and race. ACQ = Asthma Control Questionnaire. Data presented as mean and [95% CI].