Table 2

Association between the exposures and pulmonary function traits

ExposuresnFEV1 (L)FVC (L)FEV1/FVC
β (SE)P valueβ (SE)P valueβ (SE)P value
Smoking
 Never1884ReferentReferentReferent
 Former839−0.108* (0.021)4.2×10−7−0.028* (0.024)0.246−0.023* (0.003)4.2×10−11
 Current121−0.412* (0.047)<2.0×10−16−0.280* (0.052)9.1×10−8−0.084* (0.008)<2.0×10−16
Asthma
 No1803ReferentReferentReferent
 Yes1041−0.297† (0.019)<2.0×10−16−0.155† (0.022)1.1×10−12−0.048† (0.003)<2.0×10−16
Endotoxin in house dust
 log10endotoxin2208−0.017‡ (0.015)0.254−0.002‡ (0.017)0.883−0.004‡ (0.002)0.131
  • *Estimates adjusted for age, age2, state, gender, height, height2 and asthma status (body weight for FVC only).

  • †Estimates adjusted for age, age2, state, gender, height, height2, smoking status and pack-years (body weight for FVC only).

  • ‡Estimates adjusted for age, age2, state, gender, height, height2, asthma status, season of dust collection, smoking status, and pack-years (body weight for FVC only).