Table 1 Opioid use characteristics for the 2004 cohort

N = 155.*

USE CHARACTERISTICSCONTROLLED-RELEASE OXYCODONEOTHER OXYCODONE PRODUCTSOTHER PRESCRIPTION OPIOID PRODUCTSHEROIN
Age at first use, y Mean ± SD (range)33.4 ± 10.2 (19–78) n = 8432.7 ± 10.8 (14–70) n = 6833.2 ± 10.9 (14–70) n = 8023.6 ± 6.7 (16–39) n = 19
Duration of regular use, y Mean ± SD (range)2.2 ± 1.7 (0.1–8) n = 835.0 ± 5.4 (0.2–24) n = 686.0 ± 5.5 (0.1–24) n = 785.6 ± 5.4 (1–25) n = 19
Oxycodone equivalents of average amount used per day, mg Mean ± SD (range)398.0 ± 310.2 (20–1625) n = 84101.4 ± 80.5 (15–480) n = 59158.9 ± 154.0 (15–700) n = 71-
Oxycodone equivalents of heaviest amount used per day, mg Mean ± SD (range)485.1 ± 365.7 (20–1625) n = 84123.1 ± 82.7 (15–480) n = 56211 ± 248.1 (15–1000) n = 71-
Current mode of use, %
 • Oral73.8 (chewing) n = 84100 n = 6775.9 n = 7916.7 (smoking) n = 18
 • Injection13.1 n = 840 n = 6722.8 n = 7977.8 n = 18
 • Snorting13.1 n = 840 n = 671.3 n = 795.6 n = 18
  • * Some admissions involved more than 1 problem opioid, therefore the subgroup sizes sum to more than 155.

  • Oxycodone equivalents based on approximate equianalgesic oral doses.3