Reliability, Validity and Composition of a Subset of the Centers for Disease Control and Prevention Acquired Immunodeficiency Syndrome Knowledge Questionnaire in a Sample of Homeless and Impoverished Adults

Published In: Medical Care, v. 35, no. 8, Aug. 1997, p. 747-755

Posted on RAND.org on January 01, 1997

by Barbara Leake, Adeline Nyamathi, Lillian Gelberg

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Reports positive findings regarding the psychometric characteristics and composition of a subset of 21 AIDS knowledge items from the questionnaire used by the National Center for Health Statistics. These items were tested out in 486 predominantly African-American adults before delivery of well-established, culturally sensitive AIDS educational intervention. The study consisted of a convenient sample of women and their significant others or close friends in nine homeless shelters and 11 residential drug recovery programs in the Skid Row area of Los Angeles. The study identified two factors, the first composed of primarily cognitive items and the second containing mainly transmission-related items. Internal consistency reliability of the overall scale of 21 items was 0.89; and the two subscales had alphas of 0.80 and 0.92. These measures show promise for assessing AIDS knowledge and the efficacy of AIDS education programs in vulnerable populations. They indicate that these scales can be used as dependent variables in studies of the efficacy of educational programs in this population.

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