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Table 4 Change in Lung Function, eNO, and BHR Between 2 Visits According to Living Room Cat Allergen Exposure*

From: Long-Term Effects of Allergen Sensitization and Exposure in Adult Asthma: A Prospective Study

Fel d 1 (Living Room)   FEV1 (L) FEV1 (% Predicted) FVC (L) FVC (% Predicted) eNO (ppb) PD20 (Doubling Doses) Between Group Doubling Dose Difference PD20 (95% CI)
Not exposed N 115 114 95 95 81 60 0.24
  Mean 0.00 1.93 0.03 2.18 -3.09† 0.33 (-0.70 to 1.17)
  (95% CI) (-0.07 to 0.06) (-0.48 to 4.35) (-0.08 to 0.14) (-1.26 to 5.62) (1.14-1.68) (-0.15 to 0.81)  
Exposed N 49 49 42 42 38 26 t test, P = 0.615
  Mean -0.03 2.68 0.01 2.67 -3.58† 0.10 ANOVA, P = 0.984
  (95% CI) (-0.15 to 0.09) (-0.92 to 6.28) (-0.17 to 0.19) (-2.55 to 7.90) (1.20-1.75) (-0.82 to 1.02)  
  1. *Lung function and BHR: mean changes (95% CI). eNO: geometric mean (95% CI for ratio).
  2. P < 0.05 vs baseline.