Independent variables | VC | FEV1 | FEV1/VC | FEF25–75 | ||||
---|---|---|---|---|---|---|---|---|
Coeff. | SE | Coeff. | SE | Coeff. | SE | Coeff. | SE | |
A regression coefficient (coeff.) with a negative value indicates that the variable is associated with a decline of the lung function parameter. All listed variables were included simultaneously in the models; each coefficient and p value is controlled for all other covariates. Age, smoking, height, log(IgE), and initial values are continuous variables; exposure: controls = 0, farmers = 1; altitude: plain = 0, tableland = 1. | ||||||||
*p<0.05, †p<0.025, ‡p<0.01, §p<0.001. | ||||||||
Exposure | 7.94 | 9.23 | −3.80 | 6.54 | −0.30† | 0.13 | −21.50 | 14.22 |
Age | −1.79§ | 0.43 | −1.46§ | 0.32 | −0.03§ | 0.01 | −2.01‡ | 0.66 |
Smoking | 0.02 | 0.43 | −0.49 | 0.31 | −0.02§ | 0.01 | −1.53† | 0.65 |
Male | 50.42§ | 14.35 | 20.78* | 10.16 | −0.06 | 0.18 | 42.85* | 20.79 |
Height | 2.98§ | 0.80 | 1.80‡ | 0.54 | −0.01 | 0.01 | 2.00 | 1.10 |
Altitude | 7.63 | 8.15 | 4.48 | 5.80 | 0.04 | 0.10 | −5.91 | 12.69 |
log(IgE) | −6.72 | 7.71 | −9.30 | 5.48 | −0.19 | 0.10 | −31.87‡ | 11.88 |
Initial value | −0.05§ | 0.01 | −0.04§ | 0.01 | −0.10§ | 0.01 | −0.06§ | 0.01 |
Intercept | −236.67 | −127.20 | 11.81 | 7.28 | ||||
r2 | 0.18 | 0.14 | 0.40 | 0.22 |