Table 3.

Postoperative analgesics [mean (SE); 95%CI]**

Allocation	opioid 0-24 h* (mg)	opioid 24-48 h* (mg)	cumulative ropivacaine infusion 0-24 h (mL)	cumulative ropivacaine infusion 0-48 h (mL)
5 mL	27.7 (8.4); 8.9-46.5	18.9 (6.2); 3.7-34.1	111.3 (8.0); 93.7-128.9	210.8 (16.9); 173.6-248.0
10 mL	29.8 (8.2); 11.9-47.7	16.4 (3.5); 8.4-24.4	131.6 (12.4); 104.4-158.8	236.1 (9.9); 214.3-257.9
20 mL	13.4 (1.7); 9.6-17.3	21.3 (4.1); 12.3-30.3	113.0 (4.9); 102.4-123.6	219.8 (10.9); 196.0-243.5

SE: standard error; 95%CI: 95% confidence interval

* converted to equivalent oral morphine (mg)

**p > 0.05 for all comparisons