borderline significantp = 0.07
The model with test for linear trend showed borderline significant trend over CPI categories (p = 0.07), with b (95% CI) = -0.046 (-0.101, 0.003) change in FEV 1 per unit increase in CPI.
The model with test for linear trend showed borderline significant trend over CPI categories (p = 0.07), with b (95% CI) = -0.046 (-0.101, 0.003) change in FEV 1 per unit increase in CPI.
A positive association was indicated for FVC with increasing CPI index, but this did not reach statistical significance ( Table 2 ).
There was no trend in mean FVC-levels across the categories of CPI, but a significant trend in mean FEV 1 and mean for the ratio of FVC to FEV 1 was observed in both men and women ( Table 1 ).