title: Computer-based intervention to enhance self-management of calcium and vitamin D intake in women.
abstract: Despite the growing prevalence of osteoporosis, many middle-age women do not engage in recommended bone health promotion behaviors. Based on the Integrated Theory of Health Behavior Change, an intervention was designed to increase the self-management behaviors of calcium and vitamin D intake by strengthening health beliefs and using self-regulation skills. In this repeated measures experimental study, a convenience sample of 148 healthy women between 40 and 60 were assigned to either the computer-based intervention group (CBIG) or usual care group (UCG). Measures of health beliefs and calcium and vitamin D intake were obtained at baseline, 8 and 14 weeks, and 6 months. An interaction effect was observed for self-efficacy and approached significance for goal congruence. The CBIG had higher level of calcium intake at 14 weeks than women in the UCG when analyzed using intention to treat. Self-efficacy predicted calcium intake.
authors.affiliation: University of Wisconsin-Milwaukee, Box 413, Milwaukee, WI 53201, USA. ryanpa@uwm.edu
authors.forename: Polly
authors.initials: P
authors.lastname: Ryan
authors.forename: Denise
authors.initials: D
authors.lastname: Maierle
authors.forename: Mary Ellen
authors.initials: ME
authors.lastname: Csuka
authors.forename: Alice
authors.initials: A
authors.lastname: Thomson
authors.forename: Aniko
authors.initials: A
authors.lastname: Szabo
mesh_terms: D000328:Adult; D002118:Calcium / Q000008:administration & dosage*; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008875:Middle Aged; D010024:Osteoporosis / Q000517:prevention & control*; D012648:Self Care; D014807:Vitamin D / Q000008:administration & dosage*
chemical_list: D014807:Vitamin D; D002118:Calcium
keywords: calcium intake; electronic media; health behavior; osteoporosis; patient-centered care; tailored
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