81,000
Participants
Start Date
August 31, 2014
Primary Completion Date
December 31, 2015
Study Completion Date
December 31, 2015
lottery for tool users to win a $500 prize
Intervention group is eligible to enter a monthly lottery to win a $500 gift card if they use the tool each month.
enhanced promotion of the tool to employers and members
Intervention group also receives extra promotion of the tool through mailings, employer outreach, and automated phone calls
Harvard Pilgrim Health Care, Wellesley
National Institute on Aging (NIA)
NIH
National Bureau of Economic Research, Inc.
OTHER
Harvard Pilgrim Health Care
OTHER
Massachusetts Institute of Technology
OTHER
Alison Galbraith
OTHER