Nephrolepis exaltata Herbal Mask Increases Nasal IgA Levels and Pulmonary Function in Textile Factory Workers

Table 5

Average score of PEF before and after treatment.

Group	%PEF (Mean ± SD)			p	p
	Pre-test	Post-test	Δ FVC
Control	109.7 ± 20.54	106.2 ± 22.4	−3.4 ± 10.26	0.231	0.001
Treatment	114.1 ± 16.80	119.9 ± 15.2	5.8 ± 5.65	0.001

SD = Standard deviation, = Paired t-test, = Mann–Whitney test.