“…The full set of study measurements was obtained at baseline, 6 months, and 18 months postrandomization; a limited set of measurements was obtained at 3 months and 12 months postrandomization. 9 Standardized measurements, laboratory data, clinical measures, and questionnaires from the FLEX study are described in detail in eAppendix 1 in Supplement 2 . Standardized questionnaires were used to collect self-reported race/ethnicity, which was classified as non-Hispanic white, non-Hispanic black, Hispanic, and other, including Asian/Pacific Islander, Native American, or unknown.…”