Predicting participation in a dietary intervention to lower cholesterol among individuals with hyperlipidemia.
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.
McCann
B S
BS
Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle 98101-1827, USA. mccann@u.washington.edu
Bovbjerg
V E
VE
Curry
S J
SJ
Retzlaff
B M
BM
Walden
C E
CE
Knopp
R H
RH
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