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Pricing and promotion effects on low-fat vending snack purchases: The CHIPS study

Author

Listed:
  • French, S.A.
  • Jeffery, R.W.
  • Story, M.
  • Breitlow, K.K.
  • Baxter, J.S.
  • Hannan, P.
  • Snyder, M.P.

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 lowfat 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.

Suggested Citation

  • French, S.A. & Jeffery, R.W. & Story, M. & Breitlow, K.K. & Baxter, J.S. & Hannan, P. & Snyder, M.P., 2001. "Pricing and promotion effects on low-fat vending snack purchases: The CHIPS study," American Journal of Public Health, American Public Health Association, vol. 91(1), pages 112-117.
    • Handle: RePEc:aph:ajpbhl:2001:91:1:112-117_9
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