Table 3.
Descriptive statistics for age at initiation of opioid use behaviors among young adult opioid users in New York City, 2014–16.
| Age at first use among initiates (years) | ||||
|---|---|---|---|---|
| Opioid use behaviora | Prevalence among total (n = 539) N (%) | Mean (SD) | Minimum-maximum | 25th quartile |
| Non-medical PO use | 531 (98.5) | 16.9 (3.1) | 9–27 | 15 |
| Snorted PO | 394 (73.1) | 17.9 (3.1) | 10–28 | 16 |
| Regular PO use | 465 (86.3) | 18.3 (3.1) | 11–28 | 16 |
| Heroin use | 444 (82.3) | 19.7 (3.5) | 11–29 | 17 |
| Regular heroin use | 423 (78.5) | 20.3 (3.4) | 9–29 | 18 |
| Injected heroin | 345 (64.0) | 20.4 (3.7) | 11–29 | 18 |
| Injected PO | 197 (36.6) | 20.6 (3.6) | 13–28 | 18 |
a
PO, prescription opioid.