Results from NEXT-D: the association of a pre-diabetes-specific health plan and rates of incident diabetes among a national sample of working-age adults.

Moin T, Li J, Duru K, Ettner SL, Turk N, Chan C, Keckhafer AM, Luchs RH, Ho S, Mangione CM. Results from NEXT-D: the association of a pre-diabetes-specific health plan and rates of incident diabetes among a national sample of working-age adults. BMJ open diabetes research & care. 2020 Apr 1; 8(1).

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Abstract:

BACKGROUND: Pre-diabetes affects one-third of adults in the USA and a subset will progress to type 2 diabetes. Our objective was to determine whether a disease-specific health plan, known as the Diabetes Health Plan (DHP), designed to improve care for persons with pre-diabetes and diabetes also led to lower rates of incident diabetes among adults with pre-diabetes. METHODS: We examined eligibility and claims data from a large payer who offered the DHP to a national sample of employers. We included adult employees and dependents who were continuously covered by the DHP over a 4-year study window. The primary outcome was incident diabetes. We conducted propensity score matching at the employer level to find comparable control employer groups offering standard plans. Using an adjusted logistic regression model at the individual level, we tested the association between DHP employer group status and incident diabetes diagnosis during the 3 years of postbaseline follow-up. FINDINGS: Our analysis included data from 11 965 continuously enrolled adults with pre-diabetes (n = 1538 from nine employers offering DHP; n = 10 427 from 105 control employers offering standard plans). DHP employees and covered dependents with pre-diabetes had an 8% lower absolute predicted probability of incident diabetes compared with individuals from employer groups offering standard benefit plans (29% predicted probability of incident diabetes for DHP vs 37% for controls, p < 0.001). CONCLUSIONS: A pre-diabetes-specific health benefit design was associated with lower rates of incident diabetes and represents an area of needed future study.