Table 3

Categoric comparison of pain scores on numeric rating scale

Variable	NRS score;^* no. of participants						p value^†

	Continuous femoral nerve block			Periarticular injection

	0–3	4–7	> 7	0–3	4–7	> 7
Pain at rest

Postoperative day 1

Morning	28	11	0	27	8	0	0.6

Afternoon	26	13	0	22	13	0	0.8

Postoperative day 2

Morning	22	15	2	27	8	0	0.1

Afternoon	25	11	1	31	4	0	0.06

Pain with movement

Postoperative day 1,

Morning	13	19	7	13	17	5	0.95

Afternoon	6	18	15	8	21	6	0.1

Postoperative day 2

Morning	11	15	13	10	21	4	0.06

Afternoon	9	21	7	14	19	1	0.07

Worst pain experienced

Postoperative day 1

Morning	8	18	13	9	18	8	0.6

Afternoon	3	18	18	5	16	14	0.7

Postoperative day 2

Morning	5	14	20	5	23	7	0.02

Afternoon	5	17	15	6	20	9	0.4