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Medical Costs Before and After Diabetes Diagnosis

Diabetes Care; ePub 2018 Nov 19; Shrestha, et al

People diagnosed with diabetes had higher medical expenditures compared with their counterparts, not only after diagnosis, but also up to 10 years prior to diagnosis, according to a recent study. Researchers identified people with newly diagnosed diabetes among adults aged 25–64 years and matched them with people who did not have diagnosed diabetes using 1:1 propensity score matching. They followed these 2 cohorts up to ±10 years from the index date, with annual matched cohort sizes ranging from 3,922 to 39,726 individuals. Findings include:

  • The per-capita annual total excess medical expenditures for the diabetes cohort was higher for the entire 10 years prior to their index date, ranging between $1,043 in year −10 and $4,492 in year −1.
  • Excess expenditure spiked in the index year, year 1 ($8,109), declined in year 2, and then increased steadily, ranging from $4,261 to $6,162 in years 2–10.
  • The cumulative excess expenditure for the diabetes cohort during the entire 20 years of follow-up was $69,177 ($18,732 before and $50,445 after diagnosis).

Shrestha SS, Zhang P, Hora IA, Gregg EW. Trajectory of excess medical expenditures 10 years before and after diabetes diagnosis among U.S. adults aged 25–64 years, 2001–2013. [Published online ahead of print November 19, 2018]. Diabetes Care. doi:10.2337/dc17-2683.