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Journal of Occupational & Environmental Medicine:
doi: 10.1097/JOM.0b013e3181c5c476
Original Articles

Pricing and Availability Intervention in Vending Machines at Four Bus Garages.

French, Simone A. PhD; Hannan, Peter J. M Stat; Harnack, Lisa J. PhD; Mitchell, Nathan R. MPH; Toomey, Traci L. PhD; Gerlach, Anne RD, MPH

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Objective: To evaluate the effects of lowering prices and increasing availability on sales of healthy foods and beverages from 33 vending machines in 4 bus garages as part of a multicomponent worksite obesity prevention intervention.

Methods: Availability of healthy items was increased to 50% and prices were lowered at least 10% in the vending machines in two metropolitan bus garages for an 18-month period. Two control garages offered vending choices at usual availability and prices. Sales data were collected monthly from each of the vending machines at the four garages.

Results: Increases in availability to 50% and price reductions of an average of 31% resulted in 10% to 42% higher sales of the healthy items. Employees were mostly price responsive for snack purchases.

Conclusions: Greater availability and lower prices on targeted food and beverage items from vending machines was associated with greater purchases of these items over an 18-month period. Efforts to promote healthful food purchases in worksite settings should incorporate these two strategies.

©2010The American College of Occupational and Environmental Medicine


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