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Am J Public Health. 2001 Jan;91(1):112-7.

Pricing and promotion effects on low-fat vending snack purchases: the CHIPS Study.

Author information

  • 1Division of Epidemiology, University of Minnesota, 1300 S Second St. Suite 300, Minneapolis, MN 55454-1015, USA. french@epi.umn.edu

Abstract

OBJECTIVES:

This study examined the effects of pricing and promotion strategies on purchases of low-fat snacks from vending machines.

METHODS:

Low-fat snacks were added to 55 vending machines in a convenience sample of 12 secondary schools and 12 worksites. Four pricing levels (equal price, 10% reduction, 25% reduction, 50% reduction) and 3 promotional conditions (none, low-fat label, low-fat label plus promotional sign) were crossed in a Latin square design. Sales of low-fat vending snacks were measured continuously for the 12-month intervention.

RESULTS:

Price reductions of 10%, 25%, and 50% on low-fat snacks were associated with significant increases in low-fat snack sales; percentages of low-fat snack sales increased by 9%, 39%, and 93%, respectively. Promotional signage was independently but weakly associated with increases in low-fat snack sales. Average profits per machine were not affected by the vending interventions.

CONCLUSIONS:

Reducing relative prices on low-fat snacks was effective in promoting lower-fat snack purchases from vending machines in both adult and adolescent populations.

PMID:
11189801
[PubMed - indexed for MEDLINE]
PMCID:
PMC1446491
Free PMC Article
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