Table 2. Values of Pre- and Postoperative Spirometric Indices^a.

	FEV1	FVC	FEV1/FVC
Propofol (n = 56)
Before	3.49 ± 0.61	4.25 ± 0.85	79.96 ± 1.71
After	3.44 ± 0.6	4.20 ± 0.82	80.17 ± 2.82
P valueb	0.03	0.024	0.52
Sevoflurane (n = 55)
Before	3.79 ± 0.53	4.63 ± 0.22	79.96 ± 2.53
After	3.74 ± 0.67	4.52 ± 0.68	79.11 ± 2.76
P valueb	0.52	0.179	0.004
Postoperative changes
Sevoflurane	0.05 ± 0.18	0.05 ± 0.16	-0.21 ± 2.40
Propofol	0.05 ± 0.59	0.11 ± 0.64	0.85 ± 2.14
P valuec	0.464	0.967	0.464
P valued adjusted	0.976	0.536	0.976

^aValues are expressed as mean ± SD.

^bPaired t-test.

^cIndependent t-test.

^dEffect of group in the analysis of covariance.