/  PE List of Tables

10724

Table 6.1A Estimated Numbers (in Thousands) of the Number of Days Used Marijuana in the Past Year Among Past Year Users and the Number of Days Used Marijuana in the Past Month Among Past Month Users, by Age Group: 1999 and 2000 List of Tables: Standard Errors (SE) and P-Values

Frequency of Use			AGE GROUP (Years)
	Total		12-17		18-25		26 or Older
	1999	2000	1999	2000	1999	2000	1999	2000
Number of Days Used in Past Year Among Past Year Users
1-11	6,904	6,340	1,254a	1,134	2,334	2,250	3,316	2,955
12-49	4,140	3,787	757	674	1,364	1,329	2,019	1,785
50-99	2,029	2,002	376	353	736	716	917	933
100-299	4,081	4,280	640	708	1,584	1,606	1,857	1,965
300 or More	1,948	2,181	257	267	945	958	746	956
Number of Days Used in Past Month Among Past Month Users
1-2	3,023	2,926	550	514	1,048	1,007	1,425	1,405
3-5	2,085	2,138	356	372	722	699	1,006	1,067
6-19	2,254	2,397	395	394	905	947	954	1,057
20 or More	3,097	3,253	375	399	1,374	1,297	1,348	1,556

*Low precision; no estimate reported.

^aDifference between estimate and 2000 estimate is statistically significant at the .05 level.

^bDifference between estimate and 2000 estimate is statistically significant at the .01 level.

Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999 and 2000.

10724

Table 6.1B Percentages Reporting the Number of Days Used Marijuana in the Past Year Among Past Year Users and the Number of Days Used Marijuana in the Past Month Among Past Month Users, by Age Group: 1999 and 2000 List of Tables: Standard Errors (SE) and P-Values

Frequency of Use			AGE GROUP (Years)
	Total		12-17		18-25		26 or Older
	1999	2000	1999	2000	1999	2000	1999	2000
Number of Days Used in Past Year Among Past Year Users
1-11	36.1	34.1	38.2	36.2	33.5	32.8	37.4	34.4
12-49	21.7	20.4	23.1	21.5	19.6	19.4	22.8	20.8
50-99	10.6	10.8	11.5	11.3	10.6	10.4	10.4	10.9
100-299	21.4	23.0	19.5b	22.6	22.8	23.4	21.0	22.9
300 or More	10.2a	11.7	7.8	8.5	13.6	14.0	8.4a	11.1
Number of Days Used in Past Month Among Past Month Users
1-2	28.9	27.3	32.8	30.6	25.9	25.5	30.1	27.6
3-5	19.9	20.0	21.3	22.1	17.8	17.7	21.3	21.0
6-19	21.5	22.4	23.6	23.5	22.3	24.0	20.2	20.8
20 or More	29.6	30.4	22.4	23.8	33.9	32.8	28.5	30.6

*Low precision; no estimate reported.

^aDifference between estimate and 2000 estimate is statistically significant at the .05 level.

^bDifference between estimate and 2000 estimate is statistically significant at the .01 level.

Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999 and 2000.

10724

Table 6.2A Estimated Numbers (in Thousands) of the Number of Days Used Cocaine in the Past Year Among Past Year Users and the Number of Days Used Cocaine in the Past Month Among Past Month Users, by Age Group: 1999 and 2000 List of Tables: Standard Errors (SE) and P-Values

Frequency of Use			AGE GROUP (Years)
	Total		12-17		18-25		26 or Older
	1999	2000	1999	2000	1999	2000	1999	2000
Number of Days Used in Past Year Among Past Year Users
1-11	1,926	1,732	209	214	875	768	842	751
12-49	745	799	68	82	329	270	348	448
50-99	439	343	45	33	135	132	259	178
100-299	533	373	47	57	133	94	352	222
300 or More	98	81	3	4	20	11	75	66
Number of Days Used in Past Month Among Past Month Users
1-2	754a	521	60	61	277	232	*	*
3-5	335	392	36	26	107	99	192	*
6-19	335	236	19	*	74	52	*	*
20 or More	129	64	*	3	17	12	*	49

*Low precision; no estimate reported.

^aDifference between estimate and 2000 estimate is statistically significant at the .05 level.

^bDifference between estimate and 2000 estimate is statistically significant at the .01 level.

Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999 and 2000.

10724

Table 6.2B Percentages Reporting the Number of Days Used Cocaine in the Past Year Among Past Year Users and the Number of Days Used Cocaine in the Past Month Among Past Month Users, by Age Group: 1999 and 2000 List of Tables: Standard Errors (SE) and P-Values

Frequency of Use			AGE GROUP (Years)
	Total		12-17		18-25		26 or Older
	1999	2000	1999	2000	1999	2000	1999	2000
Number of Days Used in Past Year Among Past Year Users
1-11	51.5	52.0	56.0	55.1	58.6	60.2	44.9	45.1
12-49	19.9	24.0	18.2	21.0	22.1	21.1	18.5	26.9
50-99	11.7	10.3	12.2	8.5	9.0	10.4	13.8	10.7
100-299	14.2	11.2	12.7	14.5	8.9	7.4	18.8	13.3
300 or More	2.6	2.4	0.9	0.9	1.4	0.9	4.0	4.0
Number of Days Used in Past Month Among Past Month Users
1-2	48.6	42.9	48.2	46.6	58.3	58.7	*	*
3-5	21.6	32.3	29.1	20.0	22.5	25.0	20.1	*
6-19	21.6	19.4	15.3	*	15.6	13.2	*	*
20 or More	8.3	5.3	*	2.6	3.6	3.1	*	7.1

*Low precision; no estimate reported.

^aDifference between estimate and 2000 estimate is statistically significant at the .05 level.

^bDifference between estimate and 2000 estimate is statistically significant at the .01 level.

Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999 and 2000.

10724

Table 6.3A Estimated Numbers (in Thousands) of the Number of Days Used Hallucinogens in the Past Year Among Past Year Users and the Number of Days Used Hallucinogens in the Past Month Among Past Month Users, by Age Group: 1999 and 2000 List of Tables: Standard Errors (SE) and P-Values

Frequency of Use			AGE GROUP (Years)
	Total		12-17		18-25		26 or Older
	1999	2000	1999	2000	1999	2000	1999	2000
Number of Days Used in Past Year Among Past Year Users
1-11	2,206	2,358	597	577	1,345	1,390	*	*
12-49	600	712	163	180	387	364	*	*
50-99	233	254	57a	92	139	116	*	*
100-299	144	153	69	59	52	85	*	8
300 or More	10	6	3	1	6	5	*	*
Number of Days Used in Past Month Among Past Month Users
1-2	633	684	166	174	375	394	*	*
3-5	193	175	44	50	107	83	*	*
6-19	87	85	38	36	49	49	*	*
20 or More	9a	28	6	10	3	6	*	*

*Low precision; no estimate reported.

^aDifference between estimate and 2000 estimate is statistically significant at the .05 level.

^bDifference between estimate and 2000 estimate is statistically significant at the .01 level.

Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999 and 2000.

10724

Table 6.3B Percentages Reporting the Number of Days Used Hallucinogens in the Past Year Among Past Year Users and the Number of Days Used Hallucinogens in the Past Month Among Past Month Users, by Age Group: 1999 and 2000 List of Tables: Standard Errors (SE) and P-Values

Frequency of Use			AGE GROUP (Years)
	Total		12-17		18-25		26 or Older
	1999	2000	1999	2000	1999	2000	1999	2000
Number of Days Used in Past Year Among Past Year Users
1-11	69.1	67.7	67.1	63.5	69.7	70.9	*	*
12-49	18.8	20.4	18.3	19.8	20.1	18.6	*	*
50-99	7.3	7.3	6.5a	10.1	7.2	5.9	*	*
100-299	4.5	4.4	7.8	6.5	2.7	4.3	*	1.3
300 or More	0.3	0.2	0.4	0.1	0.3	0.2	*	*
Number of Days Used in Past Month Among Past Month Users
1-2	68.7	70.4	65.2	64.6	70.3	74.1	*	*
3-5	20.9	18.0	17.5	18.4	20.0	15.7	*	*
6-19	9.4	8.7	14.9	13.4	9.2	9.2	*	*
20 or More	1.0a	2.9	2.4	3.6	0.5	1.1	*	*

*Low precision; no estimate reported.

^aDifference between estimate and 2000 estimate is statistically significant at the .05 level.

^bDifference between estimate and 2000 estimate is statistically significant at the .01 level.

Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999 and 2000.

10724

Table 6.4A Estimated Numbers (in Thousands) of the Number of Days Used Inhalants in the Past Year Among Past Year Users and the Number of Days Used Inhalants in the Past Month Among Past Month Users, by Age Group: 1999 and 2000 List of Tables: Standard Errors (SE) and P-Values

Frequency of Use			AGE GROUP (Years)
	Total		12-17		18-25		26 or Older
	1999	2000	1999	2000	1999	2000	1999	2000
Number of Days Used in Past Year Among Past Year Users
1-11	1,200a	1,031	514a	441	560	481	*	*
12-49	387a	532	208	213	107	145	*	*
50-99	177	194	98	89	43	43	*	*
100-299	166	155	84	78	34	26	*	*
300 or More	7	6	5	6	2	1	*	*
Number of Days Used in Past Month Among Past Month Users
1-2	317	358	148	113	*	*	*	*
3-5	157	137	57	61	*	*	*	*
6-19	64	*	30	39	*	9	*	*
20 or More	*	*	9	11	*	*	*	*

*Low precision; no estimate reported.

^aDifference between estimate and 2000 estimate is statistically significant at the .05 level.

^bDifference between estimate and 2000 estimate is statistically significant at the .01 level.

Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999 and 2000.

10724

Table 6.4B Percentages Reporting the Number of Days Used Inhalants in the Past Year Among Past Year Users and the Number of Days Used Inhalants in the Past Month Among Past Month Users, by Age Group: 1999 and 2000 List of Tables: Standard Errors (SE) and P-Values

Frequency of Use			AGE GROUP (Years)
	Total		12-17		18-25		26 or Older
	1999	2000	1999	2000	1999	2000	1999	2000
Number of Days Used in Past Year Among Past Year Users
1-11	62.0a	53.7	56.6	53.4	75.0	69.1	*	*
12-49	20.0b	27.7	22.9	25.8	14.4a	20.8	*	*
50-99	9.1	10.1	10.8	10.8	5.7	6.2	*	*
100-299	8.6	8.1	9.2	9.4	4.5	3.8	*	*
300 or More	0.4	0.3	0.6	0.7	0.3	0.1	*	*
Number of Days Used in Past Month Among Past Month Users
1-2	55.6	57.5	60.6	50.8	*	*	*	*
3-5	27.6	22.0	23.2	27.2	*	*	*	*
6-19	11.3	*	12.5	17.3	*	5.6	*	*
20 or More	*	*	3.8	4.7	*	*	*	*

*Low precision; no estimate reported.

^aDifference between estimate and 2000 estimate is statistically significant at the .05 level.

^bDifference between estimate and 2000 estimate is statistically significant at the .01 level.

Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999 and 2000.

10724

Table 6.5A Estimated Numbers (in Thousands) of the Number of Days Used Cigarettes in the Past Month Among Past Month Users and the Number of Cigarettes Smoked Per Day Among Daily Smokers, by Age Group: 1999 and 2000 List of Tables: Standard Errors (SE) and P-Values

Frequency of Use			AGE GROUP (Years)
	Total		12-17		18-25		26 or Older
	1999	2000	1999	2000	1999	2000	1999	2000
Number of Days Used Cigarettes in Past Month Among Past Month Users
1-2	5,730	6,008	847	767	1,551	1,562	3,332	3,678
3-5	3,669	3,555	491	478	1,005	968	2,174	2,109
6-19	5,416	5,269	559	552	1,434	1,294	3,423	3,423
20-29	5,371	4,894	423a	346	1,436a	1,266	3,513	3,282
30	36,775	35,942	1,136a	997	5,866	6,004	29,773	28,941
Number of Cigarettes Smoked Per Day Among Daily Smokers
Fewer Than 6	5,663	5,585	418b	311	1,154	1,103	4,091	4,171
6-15 (1/2 Pack)	10,877	10,312	427	431	2,203	2,388	8,248	7,493
16-25 (1 Pack)	12,976	13,075	219	206	1,905	2,009	10,852	10,860
26 or More (More Than a Pack)	6,807	6,758	48	35	547	485	6,212	6,237
Not Reported	451a	212	24	14	58b	19	369a	179

*Low precision; no estimate reported.

^aDifference between estimate and 2000 estimate is statistically significant at the .05 level.

^bDifference between estimate and 2000 estimate is statistically significant at the .01 level.

Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999 and 2000.

10724

Table 6.5B Percentages Reporting the Number of Days Used Cigarettes in the Past Month Among Past Month Users and the Number of Cigarettes Smoked Per Day Among Daily Smokers, by Age Group: 1999 and 2000 List of Tables: Standard Errors (SE) and P-Values

Frequency of Use			AGE GROUP (Years)
	Total		12-17		18-25		26 or Older
	1999	2000	1999	2000	1999	2000	1999	2000
Number of Days Used Cigarettes in Past Month Among Past Month Users
1-2	10.1	10.8	24.5	24.4	13.7	14.1	7.9	8.9
3-5	6.4	6.4	14.2	15.2	8.9	8.7	5.1	5.1
6-19	9.5	9.5	16.2	17.6	12.7	11.7	8.1	8.3
20-29	9.4	8.8	12.2	11.0	12.7a	11.4	8.3	7.9
30	64.6	64.6	32.9	31.8	51.9a	54.1	70.5	69.9
Number of Cigarettes Smoked Per Day Among Daily Smokers
Fewer Than 6	15.4	15.5	36.8a	31.2	19.7	18.4	13.7	14.4
6-15 (1/2 Pack)	29.6	28.7	37.6a	43.3	37.5	39.8	27.7	25.9
16-25 (1 Pack)	35.3	36.4	19.3	20.6	32.5	33.5	36.4	37.5
26 or More (More Than a Pack)	18.5	18.8	4.2	3.5	9.3	8.1	20.9	21.6
Not Reported	1.2a	0.6	2.1	1.4	1.0b	0.3	1.2	0.6

*Low precision; no estimate reported.

^aDifference between estimate and 2000 estimate is statistically significant at the .05 level.

^bDifference between estimate and 2000 estimate is statistically significant at the .01 level.

Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1999 and 2000.

10724

Table 6.6A Estimated Numbers (in Thousands) of the Number of Days Used Alcohol in the Past Year Among Past Year Users and the Number of Days Used Alcohol in the Past Month Among Past Month Users, by Age Group: 1999 and 2000 List of Tables: Standard Errors (SE) and P-Values

Frequency of Use			AGE GROUP (Years)
	Total		12-17		18-25		26 or Older
	1999	2000	1999	2000	1999	2000	1999	2000
Number of Days Used in Past Year Among Past Year Users				&#