Table 5.

Opioid intake (morphine equivalence mg).

Narcotic intake	Group I (50)	Group II (50)
(Morphine equivalence mg)	Mean ± SD	Mean ± SD
Baseline	48.0 ± 53.75	47.9 ± 48.6
3 months	38.0 ± 44.2	40.3 ± 33.9
6 months	38.2 ± 46.1	39.3 ± 34.8
12 months	37.6 ± 38.4	37.8 ± 33.2
18 months	37.6 ± 46.4	38.7 ± 35.2
24 months	37.6 ± 46.4	38.7 ± 35.2
Group difference	0.899
Time difference	0.108
Group by time interaction	0.999