Alcohol use among American Indian high school youths from adolescence and young adulthood: a latent Markov model.
OBJECTIVE
We explored patterns of alcohol use among American Indian youths as well as concurrent predictors and developmental outcomes 6 years later.


METHODS
This study used six semi-annual waves of data collected across 3 years from 861 American Indian youths, ages 14-20 initially, from two western tribes. Using a latent Markov model, we examined patterns of change in latent states of adolescent alcohol use in the past 6 months, combining these states of alcohol use into three latent statuses that described patterns of change across the 3 years: abstainers, inconsistent drinkers, and consistent drinkers. We then explored how the latent statuses differed, both initially and in young adulthood (ages 20-26).


RESULTS
Both alcohol use and nonuse were quite stable across time, although we also found evidence of change. Despite some rather troubling drinking patterns as teens, especially among consistent drinkers, most of the youths had achieved important tasks of young adulthood. But patterns of use during adolescence were related to greater levels of substance use in young adulthood.


CONCLUSIONS
Latent Markov modeling provided a useful categorization of alcohol use that more finely differentiated those youths who would otherwise have been considered inconsistent drinkers. Findings also suggest that broad-based interventions during adolescence may not be the most important ones; instead, programs targeting later alcohol and other drug use may be a more strategic use of often limited resources.
Mitchell
Christina M
CM
American Indian and Alaska Native Programs, University of Colorado Denver, F800, P.O. Box 6508, Aurora, Colorado 80045-0508, USA. Christina.Mitchell@UCDenver.edu
Beals
Janette
J
Whitesell
Nancy Rumbaugh
NR
D000293:Adolescent; D000328:Adult; D000428:Alcohol Drinking / Q000453:epidemiology* / Q000208:ethnology / Q000517:prevention & control; D003625:Data Collection; D005260:Female; D005544:Forecasting; D006801:Humans; D007198:Indians, North American / Q000523:psychology*; D008137:Longitudinal Studies; D008297:Male; D008390:Markov Chains; D019966:Substance-Related Disorders / Q000453:epidemiology* / Q000208:ethnology; D013997:Time Factors; D014481:United States / Q000453:epidemiology / Q000208:ethnology
Drug Alcohol Depend. 2003 Jan 24;69(1):29-41
12536064
J Adolesc Health. 2004 Jun;34(6):493-500
15145406
Addict Behav. 2006 Jan;31(1):1-14
15905039
Drug Alcohol Depend. 1997 Mar 14;44(2-3):69-78
9088778
J Am Acad Child Adolesc Psychiatry. 1999 Jan;38(1):72-8
9893419
J Stud Alcohol. 1999 Mar;60(2):159-67
10091952
J Consult Clin Psychol. 1996 Oct;64(5):856-60
8916611
J Consult Clin Psychol. 1988 Oct;56(5):762-5
3192793
J Am Acad Child Adolesc Psychiatry. 1996 Jul;35(7):865-77
8768346
Am J Drug Alcohol Abuse. 2006;32(3):415-33
16864471
J Pers Soc Psychol. 1981 Jan;40(1):180-93
7218139
JAMA. 2003 Oct 15;290(15):2023-9
14559956
Drug Alcohol Depend. 1991 May;27(3):223-31
1884665
Alcohol Health Res World. 1998;22(4):253-9
15706751
Am J Public Health. 2003 Oct;93(10):1683-5
14534221
Am J Community Psychol. 1991 Apr;19(2):173-205
1867157
J Stud Alcohol Suppl. 2002 Mar;(14):54-70
12022730
Psychol Methods. 2001 Dec;6(4):330-51
11778676
J Abnorm Psychol. 2001 Aug;110(3):378-91
11502081
J Stud Alcohol. 2000 Nov;61(6):799-808
11188485
Am Indian Alsk Native Ment Health Res. 2001;10(2):1-26
11698981
Am J Community Psychol. 1997 Jun;25(3):257-88
9332964
J Stud Alcohol. 1994 May;55(3):276-84
8022174
J Abnorm Psychol. 1997 Nov;106(4):619-29
9358692
Am Indian Alsk Native Ment Health Res. 1992;5(1):13-31
1420537
J Stud Alcohol. 2002 May;63(3):325-33
12086133
J Stud Alcohol. 1999 Sep;60(5):605-14
10487729
Stat Med. 2001 Mar 15;20(5):755-70
11241574