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. Author manuscript; available in PMC: 2013 Jul 18.
Published in final edited form as: Arch Intern Med. 2010 Sep 13;170(16):1425–1432. doi: 10.1001/archinternmed.2010.273

Table 2.

Twelve-Month Health Service Utilization by Adult Enrollees Who Used Opioids Continuously for 90 Days or Longer During a 6-Month Period From 2000 to 2005a

Characteristic HealthCore (n=38 491) Arkansas Medicaid (n=10 159)
Any ED visits 9297 (24.2) 2863 (28.2)
 ED visits, mean (SD), No. 0.5 (1.5) 1.1 (3.2)
Any alcohol- or drug-related encounters 622 (1.6) 264 (2.6)
 Alcohol withdrawal 94 (0.2) 22 (0.2)
 Alcohol intoxication 4 (0.0) 28 (0.3)
 Alcohol overdose 12 (0.0) 9 (0.1)
 Drug withdrawal 271 (0.7) 86 (0.8)
 Drug intoxication 68 (0.2) 25 (0.2)
 Nonopioid drug overdose 179 (0.5) 104 (1.0)
 Opioid overdose 96 (0.2) 36 (0.4)
 Alcohol- or drug-related encounters, mean (SD), No. 0.02 (0.20) 0.04 (0.60)

Abbreviation: ED, emergency department.

a

Unless otherwise indicated, data are reported as number (percentage) of patients. All ED visits and alcohol and/or drug encounters are for the time period 12 months after the index date of initiation of long-term opioid use.