Table I.

Characteristics of study subjects

Health ControlsAsthmaAllergic Rhinitis
Number28277
Age (years)a26 ± 238 ± 339 ± 4
Methacholine PC20 μg/mlaND4.4 ± 1.6ND
Predicted FVC (%)aND86 ± 398 ± 1.7c
Predicted FEV1 (%)aND71 ± 598 ± 1c
FEV1/FVC (%)aND66 ± 390 ± 3c
Sex (male/female)12/1611/163/4
Race (AA/C/H/O)b7/15/1/58/15/3/10/5/0/2
  • a Values are presented as mean ± SE.

  • b AA, African American; C, Caucasian; H, Hispanic; O, Other.

  • c p < 0.05, asthmatics vs allergic rhinitis patients.