The analgesic efficacy of ultrasound-guided transversus abdominis plane block for retroperitoneoscopic renal surgery: a randomized controlled study

Table 4 Comparisons of recovery variables

	Group C (n = 51)	Group T (n = 52)	P value
PONV within 24 h	15 (29.4%)	17 (32.7%)	0.719
Use of antiemetics within 24 h	10 (19.6%)	8 (15.4%)	0.573
NRS subject sleep quality, score ^a	5 (2, 7)	4 (2, 7)	0.717
Time to first ambulation, hour ^b	19.5 (17.8, 21.2)	20.0 (18.2, 21.8)	0.314
Volume of drainage within 24 h, ml	30 (0, 55)	35 (0, 90)	0.248
LOS in hospital after surgery, day ^b	4.0 (3.7, 4.3)	4.0 (3.6, 4.4)	0.754

Data are presented as number (%) or median (interquartile range)
PONV postoperative nausea and vomiting, NRS numeric rating scale, LOS length of stay
^aSubjective sleep quality on the night of surgery
^bData were analyzed by Kaplan-Meier analysis and compared by log-rank test; the results are presented as median (95% confidence interval)

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