Assessment of Respiratory Symptoms and Pulmonary Function Status among Workers of Flour Mills in Addis Ababa, Ethiopia: Comparative Cross-Sectional Study

Table 6

Pearson correlation coefficient results between pulmonary function parameters and duration of exposure.

Variables	“r” –value	P-value
FVC	-0.417	0.000
FEV1	-0.359	0.000
FEV1/FVC	0.060	0.535
PEFR	-0.236	0.014
FEF25% %	-0.156	0.123