Table 2.

Comparison of operation situation ($\overline{x}$ ± s).

Group	Number of cases	Operation time (min)	Postoperative bed rest time (h)	Hospital stay (d)
Control group	55	75.69 ± 18.65	47.38 ± 5.98	11.23 ± 2.17
Observation group	55	66.78 ± 13.25	39.48 ± 5.65	9.08 ± 1.23
t	—	2.888	7.121	6.392
P	—	0.005	<0.001	<0.001