<qa>  How many SNAP households received rebates on TFV?A randomized controlled trial of HIP was conducted in Hampden County, Massachusetts. 7,500 randomly selected SNAP households received a 30 rebate on TFV purchased using SNAP benefits. The remaining 47,595 SNAP households in the county received benefits as usual. Adults in 5,076 households were randomly sampled to complete telephone surveys, including 24-h dietary recall interviews. Surveys were conducted at baseline1-3 mo pre-implementationand in two follow-up rounds, 4-6 mo and 9-11 mo post-implementation. 2,784 adults 1,388 HIP, 1,396 non-HIP completed baseline interviews; data were analyzed for 2,009 adults 72 also completing at least one follow-up interview. 