Table 2.

Comparison of surgical index levels between the two groups($\overline{x}\pm s$).

Groups	n	Operation time (min)	Early activity time (d)	Hospital stay (d)
Control group	45	36.23 ± 2.18	38.62 ± 5.37	14.12 ± 2.68
Observation group	45	30.24 ± 2.18	30.04 ± 7.07	9.17 ± 1.21
t	—	9.917	6.824	11.671
P	—	<0.001	<0.001	<0.001