Table 3.

Comparison of Forced Expiratory Volume, Forced Vital Capacity, and the Forced Expiratory Volume to Forced Vital Capacity Ratio *100 Values

Variable	N	Average	SD	Median	RIC	Z	P
FEV1(l)		3.263	0.131	3.262	3.172–3.367
	32					−5.660	<0.001
FEV1(l) (postoperative)		3.283	0.131	3.282	3.192–3.387
FVC(l)		3.488	0.181	3.453	3.371–3.587
	32					−4.900	<0.001
FVC(l) (postoperative)		3.487	0.174	3.445	3.381–3.577
(FEV1/FVC)*100		93.68	3.95	93.93	90.85–95.65
	32					−4.34	<0.001
(FEV1/FVC)*100 (postoperative)		94.24	3.27	94.79	91.69–96.54

The data showed no normality, applying Wilcoxon T.