Table 5 Regression of difference between observed pre- and post-bronchodilator lung function values (post bronchodilator – pre-bronchodilator values) in millilitres
From: Can spirometric norms be set using pre- or post- bronchodilator test results in older people?
Men | Women | ||||
|---|---|---|---|---|---|
Covariate | Regression coefficient | 95% confidence interval | Regression coefficient | 95% confidence interval | |
FEV1 (mL) | Intercept * | 90.61 | (64.14, 117.08) | 77.47 | (62.90, 92.04) |
Age/year | 0.033 | (−1.07, 1.13) | −0.31 | (−1.01, 0.39) | |
Height/cm | 0.23 | (−1.47, 1.93) | 1.82 | (0.66, 3.00) | |
BMI | −0.15 | (−3.66, 3.37) | −0.81 | (−2.57, 0.95) | |
FEV6 (mL) | Intercept * | −29.31 | (−59.32, 0.71) | −12.95 | (−31.88, 5.98) |
Age/year | 1.47 | (0.22, 2.71) | 0.79 | (−0.12, 1.70) | |
Height/cm | −1.66 | (−3.58, 0.27) | −0.10 | (−1.62, 1.42) | |
BMI | 1.99 | (−1.99, 5.97) | 0.52 | (−1.76, 2.81) | |
FVC (mL) | Intercept * | −46.16 | (−85.73, -6.58) | −46.65 | (−72.37, -20.94) |
Age/year | 0.15 | (−1.49, 1.80) | 0.70 | (−0.54, 1.93) | |
Height/cm | −2.50 | (−5.04, 0.04) | −1.56 | (−3.62, 0.51) | |
BMI | −0.35 | (−5.60, 4.90) | 0.26 | (−2.85, 3.36) | |
FEV1/ FVC (%) | Intercept * | 2.35 | (1.76, 2.93) | 2.94 | (2.43, 3.45) |
Age/year | 0.016 | (−0.008, 0.040) | −0.007 | (−0.031, 0.018) | |
Height/cm | 0.015 | (−0.022, 0.053) | 0.064 | (0.023, 0.105) | |
BMI | 0.036 | (−0.041, 0.113) | −0.017 | (−0.078, 0.045) | |