Term | Annual change in mL per pack-year to 1991 | Annual change in mL per packs per day between 1991 and 2002 | |||||
---|---|---|---|---|---|---|---|
Coef | 95%CI | p value | Coef | 95%CI | p value | ||
FEV1/FVC>0.7† | |||||||
Men (n = 692) | Linear | -0.1 | -0.3, 0.1 | 0.48 | -8.8 | -14.1, -3.5 | 0.001 |
Women (n = 659) | Linear | 1.4 | 0.8, 2.0 | <0.001 | -12.2 | -18.1, -6.4 | <0.001 |
Quadratic | -0.04 | -0.06, -0.03 | <0.001 | na | na | na | |
Cubic | 0.0004 | 0.0002, 0.0005 | <0.001 | na | na | na | |
FEV1/FVC<0.7† | |||||||
Men (n = 127) | Linear | -0.2 | -0.6, 0.2 | 0.36 | -12.9 | -25.0, -0.7 | 0.04 |
Women (n = 67) | Linear | -0.9 | -2.2, 0.5 | 0.21 | -39.4 | -69.1, -9.6 | 0.01 |
Quadratic | 0.02 | 0.01, 0.04 | 0.009 | na | na | na |