Table 6 Pre- and post- bronchodilator differences (in millilitres) between observed spirometric values, predicted values and lower limits of normal values for men and women
From: Can spirometric norms be set using pre- or post- bronchodilator test results in older people?
Men | Women | ||||
|---|---|---|---|---|---|
Mean difference | 95% limits of agreement | Mean difference | 95% limits of agreement | ||
FEV1 (L) | Observed | 91 | (−203, 385) | 64 | (−145, 273) |
Predicted | 91 | (88, 94) | 64 | (34, 95) | |
LLN | 121 | (118, 124) | 69 | (39, 101) | |
FEV6 (L) | Observed | −0.37 | (−338, 337) | 3.1 | (−267, 273) |
Predicted | −0.37 | (−53, 52) | 3.1 | (−17, 23) | |
LLN | 18 | (−31, 71) | 3 | (−15.7, 22.7) | |
FVC (L) | Observed | −49 | (−491, 393) | −29 | (−396, 338) |
Predicted | −49 | (−89, 9) | −29 | (−61, 3) | |
LLN | −28 | (−68,12) | −27 | (−59, 5) | |
FEV1/FVC (%) | Observed | 2.76 | (−3.73, 9.25) | 2.59 | (−4.73, 9.91) |
Predicted | 2.76 | (2.41, 3.11) | 2.59 | (1.27, 3.91) | |
LLN | 3.22 | (2.87, 3.57) | 2.68 | (1.36, 4.00) | |