Table 1.

Comparison between groups 1 and 2 as regard mean AC, BC, ABG, SRT and SDS

	Group 1	Group 2	P value
AC threshold (mean ± SD)
Preoperative	56.21 ± 11.51	52.00 ± 10.47	0.14
Postoperative	30.35 ± 14.22	27.82 ± 12.25	0.47
P value	< 0.001	< 0.001
BC threshold (mean ± SD)
Preoperative	23.54 ± 7.34	22.32 ± 4.73	0.43
Postoperative	21.50 ± 12.27	20.17 ± 9.87	0.66
P value	0.36	0.16
ABG (mean ± SD)
Preoperative	32.67 ± 7.33	29.68 ± 8.40	0.15
Postoperative	8.92 ± 5.28	7.61 ± 5.52	0.29
P value	< 0.001	< 0.001
SRT (mean ± SD)
Preoperative	55.67 ± 9.80	51.83 ± 6.88	0.08
Postoperative	29.50 ± 12.82	24.83 ± 11.56	0.14
P value	< 0.001	< 0.001
SDS (mean ± SD)
Preoperative	95.73 ± 7.12	97.47 ± 3.28	0.26
Postoperative	96.13 ± 7.08	97.67 ± 3.16	0.31
P value	0.08	0.18