Fig. 3: Manual registrations for the Philly Vax Sweepstakes at phillyvaxsweeps.com by region and treatment period.
From: A citywide experiment testing the impact of geographically targeted, high-pay-off vaccine lotteries
a–c, The percentage of manual registrations for the Philly Vax Sweepstakes is calculated based on the total city population for each treated zip code (19126 in a, 19133 in b and 19142 in c) and for the control zip codes during each of the three treatment periods, highlighting the relevant treatment period for each treated zip code.
