Table 4.

Comparison of pulmonary functional tests (PFT) between control group and carpenters.

PFT Values	Control group	Carpenters	95% CI	Stat. dif.	Power
FVC	94.19±13.83	58.34±17.87	30.00 ‐ 41.69	p< 0.001	1.00
FEV1	95.88±13.72	61.72±17.88	28.33 ‐ 39.99	p< 0.001	1.00
FEV1/FVC	102.50±11.78	107.06±24.83	‐35.88 ‐ ‐23.43	NS	0.26
MMEF	96.14±20.46	69.59±32.51	16.54 ‐ 36.57	p< 0.001	0.99
PEF	95.36±19.86	45.39±23.42	42.06 ‐ 57.88	p< 0.001	1.00
MEF75%	101.40±21.62	45.36±26.81	47.15 ‐ 64.93	p< 0.001	1.00
MEF50%	100.49±27.23	68.09±32.34	21.51 ‐ 43.30	p< 0.001	0.99
MEF25%	102.34±27.42	118.86±54.42	‐32.52 ‐ ‐0.519	p< 0.05	0.58

Values are presented as mean ± SD of percent predicted (for each group; n = 66). FVC: forced vital capacity; FEV₁: forced expiratory volume in one second; MMEF: maximal mid‐expiratory flow; PEF: peak expiratory flow; MEF₇₅, MEF₅₀, and MEF₂₅: maximal expiratory flow at 75%, 50%, and 25% of the FVC, respectively; Stat. dif.: statistical differences.