| Morphine equivalents milligrams/30 days | |
---|---|---|
 | Mean | Standard deviation |
Pregabalin | Â | Â |
Pre-index | 525.7 | 1,682.0 |
Post-index | 585.9 | 1,539.8 |
Difference | 60.2 | 899.2 |
Duloxetine | Â | Â |
Pre-index | 442.6 | 1,208.0 |
Post-index | 619.5 | 1,652.7 |
Difference | 176.9 | 936.5 |
Difference-in-difference comparison* | 60.2 vs. 176.9 | Â |
Statistical difference* | t = −1.90, p = 0.058 |