Table 2.

Estimated Number of Nonfatal Overdose Events (Step 3) and Population Size (Step 4) Among Adult Persons who Inject Drugs (PWID), United States, 2018

		Nonfatal Overdose Events			PWID Population Size
	US Adult Population	Median	95% CI		Median	95% CI		IDU %	95% CI
Overall	253 768 092	1 153 600	585 900	2 277 700	3 694 500	1 872 700	7 273 300	1.46	.74	2.87
US Census Region
ȃMidwest	44 508 612	230 900	117 200	456 400	770 500	389 700	1 526 800	1.73	.88	3.43
ȃNortheast	52 859 934	311 200	158 000	613 500	973 500	494 500	1 922 600	1.84	.94	3.64
ȃSouth	96 242 605	303 000	153 700	598 000	985 300	499 200	1 947 100	1.02	.52	2.02
ȃWest	60 156 941	308 500	156 800	609 100	964 600	489 100	1 901 800	1.60	.81	3.16
Sex
ȃFemale	130 130 262	327 900	166 400	646 300	1 097 600	555 000	2 163 400	0.84	.43	1.66
ȃMale	123 637 830	826 000	419 100	1,631,300	2 594 000	1 316 700	5 129 400	2.10	1.06	4.15
Race/ethnicity
ȃHispanic	41 170 562	104 700	53 100	206 500	381 600	193 100	753 200	0.93	.47	1.83
ȃNon-Hispanic Black	31 815 859	65 700	33 400	129 600	291 400	147 600	576 400	0.92	.46	1.81
ȃNon-Hispanic other	18 230 187	19 500	10 000	38 500	58 500	29 500	115 800	0.32	.16	.63
ȃNon-Hispanic White	162 551 484	963 700	489 800	1 902 800	2 961 900	1 501 600	5 835 000	1.82	.92	3.59
Age, y
ȃ18-39	101 749 577	650 600	330 400	1 284 900	1 855 300	939 200	3 657 800	1.82	.92	3.59
ȃ40+	152 018 515	503 200	255 500	993 200	1 837 500	928 900	3 628 700	1.21	.61	2.39

Abbreviation: CI, confidence interval.