Measuring the effect of a worksite-based nutrition intervention on food consumption
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Authors
Hebert, James R.Stoddard, Anne M.
Harris, Donald R.
Sorensen, Glorian
Hunt, Mary K.
Morris, Diane H.
Ockene, Judith K.
UMass Chan Affiliations
Department of Medicine, Division of Preventive and Behavioral MedicineDocument Type
Journal ArticlePublication Date
1993-11-01Keywords
Eating*Food Habits
*Health Promotion
Humans
*Nutrition Physiology
Workplace
Life Sciences
Medicine and Health Sciences
Women's Studies
Metadata
Show full item recordAbstract
Although current dietary guidelines focus on a combination of specific nutrients and food items, most effective dietary interventions focus on patterns of dietary intake and take into account the relationships among nutritional factors. In a controlled nutrition intervention conducted at 16 workplaces, a self-administered health habits questionnaire (HHQ) including a 67-item version of a semiquantitative food frequency questionnaire (FFQ) was distributed prior to a 15-month intervention and again after it. Principal components analysis (PCA) was used to reduce this large set of highly correlated FFQ food items to a smaller set of maximally uncorrelated components (PCs). Of the eight discrete food-based eating patterns targeted in the Treatwell intervention, six were highly correlated ([r[ > or = 0.48) with at least one PC each. This indicates a high level of concordance between a priori intervention targets and actual behavior. Based on log-transformed preintervention FFQ measures, our results showed that a very high proportion (0.55) of the variance in the FFQ data was explained by the PCs. A significantly greater increase in consumption of total vegetables and a larger decrease in dietary intake of ground and processed meats were observed among intervention companies. A comparison PCA conducted on intervention and control companies after the intervention indicated that patterns of intake were very stable over time.Source
Ann Epidemiol. 1993 Nov;3(6):629-35.
DOI
10.1016/1047-2797(93)90086-JPermanent Link to this Item
http://hdl.handle.net/20.500.14038/50818PubMed ID
7921311Related Resources
ae974a485f413a2113503eed53cd6c53
10.1016/1047-2797(93)90086-J