Current youth and young adults with diabetes have worse glycemic control than past groupsJun 16, 2020
The SEARCH for Diabetes in Youth Study.” The SEARCH for Diabetes in Youth (SEARCH) study began in 2000 with funding from the Centers for Disease Control (CDC) and the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). It represents the largest, most diverse study of diabetes in youth in the U.S. Currently, SEARCH has more than 27,000 participants across racial and ethnic backgrounds from 10 different states visiting one of five study centers in the country (California, Colorado, Ohio, South Carolina, Washington).
“This large, active registry and cohort study of youth diagnosed with diabetes before the age of 20 enables researchers to make assessments of prevalence, annual incidence, and trends by age, race/ethnicity, sex, and diabetes type,” said SEARCH principal investigator and study co-author Dana Dabelea, MD, PhD, director of the Lifecourse Epidemiology of Adiposity and Diabetes (LEAD) Center and the Conrad M. Riley Endowed Professor at the Colorado School of Public Health. “The SEARCH findings have contributed to a better understanding of the complex and heterogeneous nature of diabetes in youth.”
In the current analysis, researchers examined trends in glycemic control in 6,492 SEARCH participants who had diabetes for more than one year. Participants’ visit data was categorized into three time periods: 2002-2007, 2008-2013, and 2014-2019. In addition, participants were categorized into three groups based upon their duration of diabetes (1-4 years, 5-9 years, and more than 10 years), as well as by age group (10-14 years old, 15-19 years old, 20-24 years old, and 25 and older). Stratified multivariable regression models were used to test differences in hemoglobin A1c (A1c) over time. Adjustments were made for site, age, sex, race/ethnicity, health insurance status, and disease duration.
Results of the study indicated:
- A substantial percentage of current youth and young adults with diabetes are not meeting current expert recommended A1c goals. The estimated average A1c for the most recent cohort of youth and young adults with T1D was 8.7%, while the most recent group with type 2 diabetes had an estimated average A1c of 8.5%.
- Overall, youth and young adults with diabetes who had study visits between 2014-2019 had average A1c levels that were comparable to earlier SEARCH cohorts. However, current youth and young adults with type 1 diabetes in the 10-14, 15-19, and 20-24 age groups continue to have worse glycemic control than the 2002-2007 cohort. Similarly, participants 25 and older with type 2 diabetes exhibit a temporal trend of worse glycemic control relative to earlier time periods.
“The increasing trends in the burden and risk of both type 1 and type 2 diabetes suggest there is a need to continue and likely expand comprehensive and sustainable surveillance efforts in youth and young adults,” added Dr. Dabelea. “Given the evidence of early complications despite current therapeutic approaches, continuing the long-term follow up of youth with diabetes is necessary to expand our understanding of its natural history, so the most appropriate approaches to primary, secondary, and tertiary prevention of diabetes and its complications can be developed and implemented.”