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. 2010 May 28;7(3):124–135. doi: 10.7150/ijms.7.124

Table 6.

Daily opioid intake in mg of morphine equivalents.

Group I Group II P value
Baseline 31 ± 25.2 37 ± 40.4 0.294
12 months 29 ± 25.6 33 ± 31.1 0.410
24 months 27 ± 23.8 30 ± 27.1 0.549