Table 3.

Brief Pain Inventory during the perineural infusion.

Postoperative Day:	1
	Ropivacaine	Placebo	P-value
Pain (0–10 Numeric Rating Scale)
Worst	5 (3–6)	7 (5–8)	0.046
Average	2 (0–3)	4 (1–5)	0.021
Least	0 (0–2)	2 (0–3)	0.053
Current	1 (0–4)	4 (0–5)	0.050
Pain Subscale Total (0–40)	9 (4–13)	16 (7–21)	0.021
Relief provided by analgesics (%)	90 (60–100)	50 (30–100)	0.060
Interference with (0–10; 0=none):
General activity	1 (0–5)	6 (0–8)	0.052
Mood	0 (0–2)	3 (0–6)	0.038
Walking	0 (0–2)	3 (0–5)	0.046
Work (inside/outside of home)	0 (0–4)	5 (0–8)	0.017
Relationships	0 (0–1)	3 (0–6)	0.017
Sleep	0 (0–2)	3 (0–8)	0.034
Enjoyment of life	0 (0–5)	5 (0–8)	0.049
Interference Subscale Total (0–70)	3 (0–24)	33 (0–44)	0.035
Brief Pain Inventory Total (0–120)	14 (4–37)	57 (8–67)	0.012

Values are reported as median (interquartile) and represent the time between the surgical procedure and the time queried.

Values for the Brief Pain Inventory total score (0 = optimal; 120 = worst possible) consist of the two subscales combined with the question involving relief provided by pain treatments (percentage relief divided by 10 and then subtracted from 10: 0 = complete relief, 10 = no relief).