Table 3.

Pain scores over time and postoperative hospitalization metrics, stratified by treatment arm

Variablea	Bupivacaine type used in adductor canal block (treatment arm)
	Liposomal	Conventional	P-value
Pain scores over time
PACU
N	40	40
Average pain score	0 [0–3.1]	0 [0–2.0]	0.94b
Maximum pain score	0 [0–6.5]	0 [0–4.0]	0.94b
POD-0
N	40	40
Average pain score	3.2 [2.5–4.4]	3.9 [2.6–4.8]	0.36b
Maximum pain score	6 [5–7]	7 [5.1–8]	0.25b
POD-1
N	36	35
Average pain score	4.5 [3.0–5.7]	5 [3.6–6.0]	0.43b
Maximum pain score	6.7 [4–7]	7 [5–7.5]	0.61b
POD-2
N	34	34
Average pain score	4 [1.9–5.8]	4.2 [3.0–5.6]	0.54b
Maximum pain score	4.5 [2–7]	5.5 [4–7]	0.27b
Postoperative hospitalization
Total time in PACU (h)	1.7 ± 0.5	2.0 ± 0.7	0.14c
Time, anesthesia start to discharge (h)	25 [7.3–28.9]	23.7 [21.5–27.1]	0.478b

PACU post-anesthesia care unit, POD postoperative day

^aData shown as median [interquartile range] or as mean ± standard deviation

^bMann Whitney U test

^c t-test