Table 2

Postoperative analgesic requirements

ODN (n=34)LDN (n=20)p Value
Values are mean (SD).
Total dose of morphine (mg)179 (108)67 (54)0.0001
    Range41–3843–190
PCAS score (hourly mean)1.7 (0.6)1.1 (0.6)0.0008
    Range0.6–2.670.1–2.0
Total duration of PCAS (hours)64 (18)40 (13)0.0001
    Range36–11312–56