Theory-driven Intervention Improves Calcium Intake, Osteoporosis Knowledge, and Self-efficacy in Community-Dwelling Older Black Adults
2011
Babatunde, Oyinlola T. | Himburg, Susan P. | Newman, Frederick L. | Campa, Adriana | Dixon, Zisca
OBJECTIVE: To assess the effectiveness of an osteoporosis education program to improve calcium intake, knowledge, and self-efficacy in community-dwelling older Black adults. DESIGN: Randomized repeated measures experimental design. SETTING: Churches and community-based organizations. PARTICIPANTS: Men and women (n = 110) 50 years old and older from 3 south Florida counties. INTERVENTION: Participants randomly assigned to either of 2 groups: Group 1 (experimental group) or Group 2 (wait-list control group). Group 1 participated in 6 weekly education program sessions immediately following baseline assessment, and Group 2 started the program following Group 1’s program completion. A tested curriculum was adapted to meet the needs of the target population. MAIN OUTCOME MEASURES: Dietary calcium intake, osteoporosis knowledge, health beliefs, and self-efficacy. ANALYSIS: Descriptive and summary statistics, repeated measures analysis of variance, and regression analysis. RESULTS: Of the total participants, 84.6% completed the study (mean age = 70.2 years). Overall, an educational program developed with a theoretical background was associated with improvement in calcium intake, knowledge, and self-efficacy, with no effect on most health belief subscales. Assigned group was the major predictor of change in calcium intake. CONCLUSIONS AND IMPLICATIONS: A theory-driven approach is valuable in improving behavior to promote bone health in this population. Health professionals should consider using more theory-driven approaches in intervention studies.
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