Table 2.

Pulmonary function of the three groups of patients (n = 223)

Pulmonary function	A	B	C	P
FEV1/pred	87.93 ± 11.25	79.57 ± 21.01	70.74 ± 24.79	0.281
FVC/pred	91.41 ± 19.03	82.98 ± 10.14	76.75 ± 18.70	0.104
FEV1/FVC	73.82 ± 3.90	68.41 ± 9.32	65.71 ± 11.29	0.319
FEF/pred	82.23 ± 16.93	81.77 ± 16.54	76.41 ± 30.30	0.714
FEF25/pred	85.77 ± 19.25	67.08 ± 24.65	61.46 ± 41.00	0.272
DLCO/pred	97.08 ± 8.86	86.89 ± 18.19	81.68 ± 18.73	0.415

Footnote. The data are expressed as the means ± standard deviations and were analyzed by one-way analysis of variance (ANOVA). All p values were > 0.05, and there was no significant difference. FEV1 (forced expiratory volume in 1 s); FVC (FEV1/forced vital capacity); FEF (forced expiratory flow); DLCO (transfer coefficient for carbon monoxide); p, p value