1998 National Household Survey on Drug Abuse:  Population Estimates

Cocaine Frequency - Region

Table 21E. Frequency of Cocaine Use During Past Year by Age Group and Gender for Northeast Region in 1998

AGE/ /GENDER	At Least Once					12 or More Days					51 or More Days
	Observed Estimate	95% C.I.				Observed Estimate	95% C.I.				Observed Estimate	95% C.I.
RATE ESTIMATES (Percent)
AGE
12-17	0.6	(0.2	-	1.7)		0.2	(0.0	-	1.1)		0.2	(0.0	-	1.1)
18-25	3.3	(1.8	-	6.0)		0.9	(0.4	-	2.4)		0.4	(0.1	-	2.0)
26-34	2.5	(1.2	-	4.9)		1.7	(0.9	-	3.0)		0.9	(0.4	-	2.0)
$35	0.4	(0.2	-	1.1)		0.3	(0.1	-	1.0)		*		*
GENDER
Male	1.2	(0.7	-	2.1)		0.4	(0.2	-	0.9)		0.3	(0.1	-	0.8)
Female	1.0	(0.6	-	1.7)		0.8	(0.4	-	1.5)		0.2	(0.1	-	0.6)
TOTAL	1.1	(0.7	-	1.6)		0.6	(0.4	-	1.0)		0.2	(0.1	-	0.5)

POPULATION ESTIMATES (In Thousands)

AGE
12-17	25	(9	-	68)		9	(2	-	44)		9	(2	-	44)
18-25	163	(89	-	297)		45	(17	-	117)		22	(5	-	97)
26-34	167	(83	-	333)		112	(61	-	205)		61	(28	-	134)
$35	107	(40	-	283)		85	(29	-	254)		*		*
GENDER
Male	246	(140	-	432)		81	(34	-	190)		54	(19	-	153)
Female	216	(125	-	372)		171	(87	-	336)		48	(18	-	129)
TOTAL	462	(310	-	690)		252	(155	-	411)		102	(50	-	208)

Table 21F. Frequency of Cocaine Use During Past Year by Age Group and Gender for North Central Region in 1998

AGE/ /GENDER	At Least Once					12 or More Days					51 or More Days
	Observed Estimate	95% C.I.				Observed Estimate	95% C.I.				Observed Estimate	95% C.I.
RATE ESTIMATES (Percent)
AGE
12-17	1.2	(0.6	-	2.4)		0.2	(0.0	-	0.8)		0.1	(0.0	-	0.8)
18-25	5.4	(3.7	-	8.0)		1.1	(0.5	-	2.2)		0.7	(0.2	-	1.9)
26-34	2.9	(1.8	-	4.6)		0.5	(0.2	-	1.4)		0.2	(0.0	-	1.0)
$35	0.5	(0.2	-	1.2)		0.2	(0.0	-	0.8)		0.2	(0.0	-	0.8)
GENDER
Male	2.2	(1.5	-	3.2)		0.5	(0.2	-	1.1)		0.4	(0.1	-	1.0)
Female	1.0	(0.6	-	1.6)		0.2	(0.1	-	0.5)		0.1	(0.0	-	0.4)
TOTAL	1.6	(1.2	-	2.1)		0.3	(0.2	-	0.6)		0.2	(0.1	-	0.5)

POPULATION ESTIMATES (In Thousands)

AGE
12-17	66	(33	-	130)		9	(2	-	46)		5	(1	-	44)
18-25	361	(245	-	528)		71	(34	-	149)		44	(16	-	124)
26-34	225	(139	-	364)		39	(14	-	106)		13	(2	-	75)
$35	157	(68	-	364)		56	(13	-	243)		50	(10	-	255)
GENDER
Male	538	(367	-	785)		121	(56	-	261)		92	(35	-	242)
Female	272	(173	-	428)		54	(21	-	140)		21	(4	-	97)
TOTAL	810	(605	-	1,082)		175	(97	-	315)		113	(49	-	259)

* Low precision; no estimate reported.

NOTE: "At Least Once" is equivalent to "Used Past Year" in Table 4.

Source: Office of Applied Studies, SAMHSA, National Household Survey on Drug Abuse, 1998

Cocaine Frequency - Region

Table 21G. Frequency of Cocaine Use During Past Year by Age Group and Gender for South Region in 1998

AGE/ /GENDER	At Least Once					12 or More Days					51 or More Days
	Observed Estimate	95% C.I.				Observed Estimate	95% C.I.				Observed Estimate	95% C.I.
RATE ESTIMATES (Percent)
AGE
12-17	2.1	(1.2	-	3.5)		0.7	(0.3	-	1.6)		0.3	(0.1	-	0.6)
18-25	3.7	(2.6	-	5.2)		0.8	(0.4	-	1.4)		0.3	(0.2	-	0.7)
26-34	2.6	(1.6	-	4.1)		1.2	(0.6	-	2.4)		0.4	(0.2	-	1.0)
$35	1.0	(0.6	-	1.7)		0.7	(0.3	-	1.3)		0.2	(0.1	-	0.6)
GENDER
Male	2.4	(1.8	-	3.3)		1.2	(0.7	-	2.0)		0.4	(0.2	-	0.8)
Female	1.1	(0.7	-	1.5)		0.4	(0.2	-	0.7)		0.2	(0.1	-	0.3)
TOTAL	1.7	(1.4	-	2.2)		0.8	(0.5	-	1.2)		0.3	(0.2	-	0.5)

POPULATION ESTIMATES (In Thousands)

AGE
12-17	165	(98	-	278)		56	(25	-	127)		21	(9	-	49)
18-25	369	(257	-	526)		78	(44	-	138)		34	(17	-	68)
26-34	318	(200	-	502)		143	(69	-	296)		47	(19	-	118)
$35	477	(286	-	792)		316	(159	-	625)		105	(41	-	270)
GENDER
Male	902	(656	-	1,238)		435	(255	-	738)		140	(66	-	296)
Female	426	(290	-	624)		158	(87	-	287)		66	(33	-	132)
TOTAL	1,329	(1,047	-	1,684)		593	(392	-	897)		207	(120	-	354)

Table 21H. Frequency of Cocaine Use During Past Year by Age Group and Gender for West Region in 1998

AGE/ /GENDER	At Least Once					12 or More Days					51 or More Days
	Observed Estimate	95% C.I.				Observed Estimate	95% C.I.				Observed Estimate	95% C.I.
RATE ESTIMATES (Percent)
AGE
12-17	2.3	(1.5	-	3.6)		1.0	(0.5	-	1.9)		0.5	(0.2	-	1.5)
18-25	6.5	(5.1	-	8.2)		1.7	(1.2	-	2.4)		0.5	(0.3	-	1.0)
26-34	2.9	(1.8	-	4.7)		0.6	(0.3	-	1.3)		0.4	(0.2	-	1.1)
$35	1.6	(1.0	-	2.4)		0.8	(0.4	-	1.4)		0.3	(0.1	-	0.6)
GENDER
Male	3.0	(2.4	-	3.8)		0.9	(0.6	-	1.3)		0.3	(0.2	-	0.5)
Female	2.1	(1.5	-	2.8)		0.9	(0.5	-	1.6)		0.4	(0.2	-	0.8)
TOTAL	2.5	(2.1	-	3.1)		0.9	(0.6	-	1.3)		0.4	(0.2	-	0.6)

POPULATION ESTIMATES (In Thousands)

AGE
12-17	122	(79	-	187)		51	(26	-	101)		28	(10	-	79)
18-25	412	(326	-	520)		106	(73	-	153)		32	(17	-	61)
26-34	232	(143	-	373)		48	(23	-	102)		34	(13	-	90)
$35	444	(291	-	675)		226	(125	-	405)		79	(35	-	174)
GENDER
Male	712	(560	-	905)		206	(144	-	295)		68	(38	-	122)
Female	498	(360	-	685)		225	(128	-	394)		106	(56	-	199)
TOTAL	1,210	(998	-	1,465)		431	(307	-	605)		174	(111	-	272)

* Low precision; no estimate reported.

NOTE: "At Least Once" is equivalent to "Used Past Year" in Table 4.

Source: Office of Applied Studies, SAMHSA, National Household Survey on Drug Abuse, 1998