For COPD, differences did not reach statistical significance ( P > 0.05 for all exposures) ( Table 3 ).
← all excerpts
Correlates of COPD and chronic bronchitis in nonsmokers: data from a cross-sectional study.
1
0.0500
0.0500
For COPD, differences did not reach statistical significance ( P > 0.05 for all exposures) ( Table 3 ).