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Sandra J. Potthoff, PhD; Linda H. Bearinger, PhD, MS; Carol L. Skay, PhD; Nadav Cassuto, PhD; Robert W. Blum, MD, PhD; Michael D. Resnick, PhD

Arch Pediatr Adolesc Med. 1998;152:157-163.

Objectives  To explore the covariation of risk behaviors in a national sample of American Indian reservation-based youth using listwise principal components factor analysis and to determine how these risk behaviors may vary by age and sex.

Design  Analysis of data from the National Indian Adolescent Health Survey, a validated anonymous self-report questionnaire of 162 items addressing various health domains.

Setting  The survey was administered nationally in more than 200 reservation-based schools.

Participants  Thirteen thousand nine hundred twenty-three reservation-based American Indian or Alaska Native students in grades 7 through 12 representing more than 50 tribes. The listwise factor analysis sample included 7687 respondents with complete data.

Main Outcomes Measures  Item loadings and factor correlations by age and sex for 30 risk behaviors across various health domains.

Results  Three risk behavior factors were fairly stable across sex and age: (1) the use of alcohol, tobacco, and other drugs; (2) risky sexual behavior; and (3) suicidal behaviors. Correlations between these and other factors suggested different strengths of relationships by sex and age. Other factors, including violence, truancy, and delinquency, showed differences in item loading on factors and correlations between factors. The use of tobacco, alcohol, and other drugs was most frequently associated with other risk behavior factors, and suicidal behaviors showed the next highest frequency of intercorrelations.

Conclusions  There are sex and age differences in the covariation of risk behaviors, and suicidal behaviors should be further investigated to determine if our findings are unique to American Indian youth. Health interventions that focus categorically on 1 risk dimension should also emphasize substance use prevention and intervention. To prevent substance abuse among American Indian youth, research efforts need to focus on effective strategies for coping with social and psychological stressors.

From the Department of Healthcare Management, Carlson School of Management (Dr Potthoff), and the School of Nursing (Drs Bearinger, Skay, and Cassuto), University of Minnesota, Minneapolis; and the Division of General Pediatrics and Adolescent Health, Department of Pediatrics, University of Minnesota Medical School–Minneapolis (Drs Blum and Resnick).

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