Effect of intraoperative injection of esketamine on postoperative analgesia and postoperative rehabilitation after cesarean section

Table 2 Comparison of Visual Analog Scale scores at different time points post-cesarean section among the three groups of pregnant women (scores, mean ± SD)

Time point	Low-dose group (n = 97)	How-dose group (n = 97)	Control group (n = 98)	F/χ2	P value
Postoperative 6 hours	1.8 ± 0.4a	1.9 ± 0.8a	2.3 ± 0.6b	22.358	< 0.001
Postoperative 12 hours	2.7 ± 0.7a	2.6 ± 0.7a	3.3 ± 1.2b	15.599	< 0.001
Postoperative 24 hours	3.1 ± 1.0a	2.7 ± 0.8a,b	3.5 ± 1.2b	17.220	< 0.001
Postoperative 48 hours	2.1 ± 0.6	2.1 ± 0.7a	2.4 ± 1.1	4.498	0.012
Rescue rate, n (%)	15 (15.5)	14 (14.4)	27 (27.6)	6.705	0.035

^aP < 0.05 compared with control group.

^bP < 0.05 compared with low-dose group.