| Opioid use, % | Average MEQ, mg | |||
|---|---|---|---|---|
| Income quintile | Any time during pregnancy | After first pregnancy-related visit | Overall | Those using opioids after first pregnancy-related visit |
| 1 (lowest) | 11.7* | 6.9* | 773† | 689‡ |
| 2 | 7.2 | 4.6 | 720 | 615 |
| 3 | 6.5 | 4.3 | 543 | 497 |
| 4 | 5.8 | 3.9 | 562 | 486 |
| 5 (highest) | 5.1* | 3.7* | 653† | 668‡ |
Note: MEQ = morphine equivalents.
*p < 0.001 for comparison of quintiles 1 and 5.
†p = 0.5 for comparison of quintiles 1 and 5.
‡p = 0.9 for comparison of quintiles 1 and 5.