TABLE 1—
Source of Last Prescription Opioid Misuse Among 3 Groups of Past-12-Month Prescription Opioid Misusers (Aged ≥ 18 Years): United States, National Survey on Drug Use and Health, 2016–2017
| Source of Last Misuse | Without-Prescription-Only Misusers (n = 1885), % (95% CI) |
Without-and-With-Prescription Misusers (n = 1470), % (95% CI) |
With-Prescription-Only Misusers (n = 1048), % (95% CI) |
Shah’s Wald F-Test (n = 4403) (df)a |
| 1 doctor | . . . | 24.7 (21.4, 28.4) | 97.5 (96.1, 98.4) | (10, 50) = 109.4*** |
| > 1 doctor | . . . | 1.5 (0.6, 3.5) | 2.5 (1.6, 3.9) | . . . |
| Stole from doctor’s office, clinic, hospital, pharmacy | 0.5 (0.2, 1.4) | 1.3 (0.7, 2.4) | . . . | . . . |
| Friend or relative | 87.7 (85.5, 89.6) | 57.0 (53.3, 60.5) | . . . | . . . |
| Drug dealer or stranger | 6.3 (5.1, 7.8) | 10.4 (8.4, 12.8) | . . . | . . . |
| Other | 5.5 (4.5, 6.8) | 5.2 (3.7, 7.3) | . . . | . . . |
Note. CI = confidence interval. The sample size was n = 4403. Estimates are weighted; sample sizes are unweighted.
a
Shah’s Wald F-test for percentage differences in source of last misuse by misuser groups.
***
P < .001.