TY - JOUR
T1 - Readiness to Shop for Low-Fat Foods
T2 - A Population Study
AU - Plotnikoff, Ronald C.
AU - Hotz, Stephen B.
AU - Johnson, Steven T.
AU - Hansen, Janice S.
AU - Birkett, Nicholas J.
AU - Leonard, Lynne E.
AU - Flaman, Laura M.
N1 - Funding Information:
FUNDING/SUPPORT: The first author (R.C.P.) is supported from Salary Awards from the Canadian Institutes of Health Research (Applied Public Health Chair Program) and the Alberta Heritage Foundation for Medical Research.
PY - 2009/8
Y1 - 2009/8
N2 - Background: Stages of change are related to dietary fat consumption. Few studies have examined stage occupation within the context of purchasing low-fat foods. Objective: To determine the stage-prevalence of individuals for purchasing low-fat foods; identify the frequency of misclassification into action and maintenance (A/M) stages for purchasing for low-fat foods; and explain the demographic and cognitive-variable differences between pseudo (or false positive) A/M and true A/M individuals. Design: Data were collected using a self-administered questionnaire among English-speaking adults (n=1,001) who were randomly sampled by mail. Statistical analyses performed: Descriptive statistics were used to compare the characteristics of the stage groups. Groups were compared using χ2 tests and Student t test. Results: Of those who reported being in A/M stages, 32% were misclassified by the staging algorithm and were not true A/M low-fat food purchasers. Conclusions: Individuals who are in A/M stages for buying low-fat foods still purchase high-fat foods. Stage misclassification may be a persistent problem in studies of dietary change using the Transtheoretical Model.
AB - Background: Stages of change are related to dietary fat consumption. Few studies have examined stage occupation within the context of purchasing low-fat foods. Objective: To determine the stage-prevalence of individuals for purchasing low-fat foods; identify the frequency of misclassification into action and maintenance (A/M) stages for purchasing for low-fat foods; and explain the demographic and cognitive-variable differences between pseudo (or false positive) A/M and true A/M individuals. Design: Data were collected using a self-administered questionnaire among English-speaking adults (n=1,001) who were randomly sampled by mail. Statistical analyses performed: Descriptive statistics were used to compare the characteristics of the stage groups. Groups were compared using χ2 tests and Student t test. Results: Of those who reported being in A/M stages, 32% were misclassified by the staging algorithm and were not true A/M low-fat food purchasers. Conclusions: Individuals who are in A/M stages for buying low-fat foods still purchase high-fat foods. Stage misclassification may be a persistent problem in studies of dietary change using the Transtheoretical Model.
UR - http://www.scopus.com/inward/record.url?scp=67650995879&partnerID=8YFLogxK
U2 - 10.1016/j.jada.2009.05.010
DO - 10.1016/j.jada.2009.05.010
M3 - Journal Article
C2 - 19631045
AN - SCOPUS:67650995879
SN - 0002-8223
VL - 109
SP - 1392
EP - 1397
JO - Journal of the American Dietetic Association
JF - Journal of the American Dietetic Association
IS - 8
ER -