title: Predicting participation in a dietary intervention to lower cholesterol among individuals with hyperlipidemia.
abstract: Adult men and women (N = 8,748) were given blood cholesterol tests and completed a measure of fat intake and a staging questionnaire that assessed readiness to adopt a cholesterol-lowering diet. Eligibility for the trial was based on plasma cholesterol levels and self-reported dietary intake. Of 772 eligible participants, 545 (70.6%) agreed to join. In multivariate analyses, joiners did not differ from nonjoiners by age, total cholesterol levels, or self-reported dietary fat intake. Women were more likely than men to join the study. Individuals in the preparation stage (defined on the basis of a staging algorithm derived from the transtheoretical model of change) were more likely to join the trial than were precontemplators. An understanding of the determinants of participation in a dietary intervention may be important in the enhancement of high-risk individuals' acceptance of recommendations to make dietary changes.
authors.affiliation: Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle 98101-1827, USA. mccann@u.washington.edu
authors.forename: B S
authors.initials: BS
authors.lastname: McCann
authors.forename: V E
authors.initials: VE
authors.lastname: Bovbjerg
authors.forename: S J
authors.initials: SJ
authors.lastname: Curry
authors.forename: B M
authors.initials: BM
authors.lastname: Retzlaff
authors.forename: C E
authors.initials: CE
authors.lastname: Walden
authors.forename: R H
authors.initials: RH
authors.lastname: Knopp
mesh_terms: D000328:Adult; D005260:Female; D005544:Forecasting; D006801:Humans; D006949:Hyperlipidemias / Q000097:blood / Q000178:diet therapy* / Q000523:psychology; D016015:Logistic Models; D008297:Male; D015999:Multivariate Analysis; D016017:Odds Ratio; D010342:Patient Acceptance of Health Care; D014861:Washington