Table 2.

Opioid user subpopulations: New York City, 2006

Subpopulation	Dataset	Opioid misusers (N)	Subpopulation estimation definitions	Subpopulation estimates (N)	Midpoint estimate (N)
General Population (G)			Expansive = GE = a + b + c Restrictive = GR = a	GE = 79,245 GR = 59,680	69,463
a. Household survey	NSDUH	59,680
b. NYC jail inmates receiving methadone	Correctional Health Services	18,958
c. Overdose deaths involving opioids	Vital Statistics	607
Drug Services (D)			Expansive = DE = d + e Restrictive = DR = d	DE = 29,818 DR = 26,938	28,378
d. Detox and drug treatment programs	CDS	26,938
e. Buprenorphine	Prescription records	2,880
Medical Services (M)			Total = M = f + g-h	M = 17,618	17,618
f. Hospital inpatienti	SPARCS	11,058
g. Emergency room	SPARCS	7,856
h. Both inpatient and emergency admissionsii	SPARCS	(−)1,296
UNADJUSTED TOTALS (T)		126,681	Expansive = TE = GE + DE + M Restrictive = TR = GR + DR + M	TE = 126,681 TR = 104,236	115,459

ⁱ Individuals hospitalized for medical reasons only; excludes those hospitalized only for drug/alcohol detoxification or rehabilitation.

ⁱⁱ Individuals having both a medical hospitalization and an emergency room admission for an opioid-related diagnosis in calendar year 2006.