Comparison of surgical conditions between the two groups of patients ( ).

Table 2: Comparison of surgical conditions between the two groups of patients ( $\bar{x} \pm s$ ).

Group	Number of cases	Length of surgery (min)	Intraoperative blood loss (ml)	Postoperative bedtime (d)
Control group	110	85.3 ± 14.8	97.5 ± 10.8	4.1 ± 1.2
research group	110	98.1 ± 20.4	157.2 ± 20.1	7.9 ± 1.3
T	/	13.849	12.585	13.849
P	/	< 0.05	< 0.05	< 0.05