. 2014 Oct 5;16(10):e9105. doi: 10.5812/ircmj.9105

Table 3. Mean Values of Spirometric Parameters in Exposed and Unexposed Groups ^a,b.

Parameter	Exposed Workers	Unexposed Workers	P Value
FEV ₁	74.52 ± 9.55	87.98 ± 13.74	< 0.001
FVC	77.32 ± 8.15	89.05 ± 12.13	< 0.001
FEV ₁ /FVC	79.65 ± 6.65	82.55 ± 5.19	< 0.001
FEF _25-75%	72.30 ± 6.31	87.31 ± 19.98	< 0.001
PEF	76.99 ± 7.36	85.91 ± 14.25	< 0.001

^a Abbreviations: FCV, forced vital capacity; FEF, forced expiratory flow; FEV, forced expiratory volume; PEF, peak expiratory flow.

^b All the Values are present as Mean ± SD.

Table 3. Mean Values of Spirometric Parameters in Exposed and Unexposed Groups a,b.