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Long-term Cumulative Incidence of Clinically Diagnosed Retinopathy in the Finnish Diabetes Prevention Study.

Clinical visual abstract: Long-term Cumulative Incidence of Clinically Diagnosed Retinopathy in the Finnish Diabetes Prevention Study.

Clinical Bottom Line

In a J Clin Endocrinol Metab randomized trial, A higher cumulative HbA1c was significantly associated with a higher risk of retinopathy. Key reported results included No significant difference was found in the cumulative incidence of clinically diagnosed DR between the original intervention…

Summary: In a J Clin Endocrinol Metab randomized trial, A higher cumulative HbA1c was significantly associated with a higher risk of retinopathy. Key reported results included No significant difference was found in the cumulative incidence of clinically diagnosed DR between the original intervention (N = 23, 8.9%) and control groups (N = 19, 7.7%) during the extended follow-up (odds ratio: 1.15; 95% CI, 0.61-2.21).

PICO Summary

ElementDetail
PopulationThe study included 505 individuals from the Finnish Diabetes Prevention Study (DPS) (mean age 55; range, 40-64 years at the onset of the study) with IGT who were originally randomly assigned to the intervention (weight loss, healthy diet, and physical activity) (N = 257) and usual care control groups (N = 248). The median follow-up was 22 years. Clinical retinopathy diagnoses were obtained from the Finnish national hospital…
InterventionThe study included 505 individuals from the Finnish Diabetes Prevention Study (DPS) (mean age 55; range, 40-64 years at the onset of the study) with IGT who were originally randomly assigned to the intervention (weight loss, healthy diet, and physical activity) (N = 257) and usual care control groups (N = 248).
ComparisonThe study included 505 individuals from the Finnish Diabetes Prevention Study (DPS) (mean age 55; range, 40-64 years at the onset of the study) with IGT who were originally randomly assigned to the intervention (weight loss, healthy diet, and physical activity) (N = 257) and usual care control groups (N = 248).
OutcomeNo significant difference was found in the cumulative incidence of clinically diagnosed DR between the original intervention (N = 23, 8.9%) and control groups (N = 19, 7.7%) during the extended follow-up (odds ratio: 1.15; 95% CI, 0.61-2.21). A higher cumulative glycated hemoglobin A1c (HbA1c) was significantly associated with a higher risk of retinopathy (hazard ratio 1.4; 1.02-1.88, 95% posterior interval, adjusted for group, age, and sex). Furthermore, the incidence of retinopathy diagnosis was numerically…
RCT J Clin Endocrinol Metab · 2025

Long-term Cumulative Incidence of Clinically Diagnosed...

Primary RCT · Diabetes & glycaemia

Trial design
Diabetes & glycaemia Enrolled & assessed RANDOMISED RCT Intervention Active arm n = NR Comparator Comparator n = NR No significant difference was found in the cumulative incidence of clinically diagnosed DR between the...
Between-group effect (95% CI)
0 (no difference) -1 1 Primary estimate+1.15 ✓ Reported effect · ✓ = significant
Primary estimate
1.15
CI not stated in abstract
Results
23
Abstract-reported estimate
Interpretation
A higher cumulative HbA1c was significantly associated with a higher risk of retinopathy.
Source conclusion
Limitations
95% CI not stated
Check full paper
⬡ Bottom Line

A higher cumulative HbA1c was significantly associated with a higher risk of retinopathy. No evidence was found for a beneficial effect of a 4-year lifestyle intervention on the long-term occurrence of clinical DR during a median of 22-year follow-up.

Expert Commentary

This J Clin Endocrinol Metab randomized trial evaluated Long-term Cumulative Incidence of Clinically Diagnosed Retinopathy in the Finnish Diabetes Prevention Study. The abstract describes the study as follows: The study included 505 individuals from the Finnish Diabetes Prevention Study (DPS) (mean age 55; range, 40-64 years at the onset of the study) with IGT who were originally randomly assigned to the intervention (weight loss, healthy diet, and physical activity) (N = 257) and usual care control… The main reported results were: No significant difference was found in the cumulative incidence of clinically diagnosed DR between the original intervention (N = 23, 8.9%) and control groups (N = 19, 7.7%) during the extended follow-up (odds ratio: 1.15; 95% CI, 0.61-2.21). A higher cumulative glycated hemoglobin A1c (HbA1c) was significantly associated with a higher risk of retinopathy (hazard ratio 1.4; 1.02-1.88, 95% posterior… The authors conclude: A higher cumulative HbA1c was significantly associated with a higher risk of retinopathy. No evidence was found for a beneficial effect of a 4-year lifestyle intervention on the long-term occurrence of clinical DR during a median of 22-year follow-up. The clinical value of the result depends on whether the trial population, comparator, follow-up and outcome match the decision in front of..

References

Kaarniranta K, Valtanen M, Keinänen-Kiukaanniemi S, et al.. Long-term Cumulative Incidence of Clinically Diagnosed Retinopathy in the Finnish Diabetes Prevention Study.. J Clin Endocrinol Metab. 2025-Feb-18. doi:10.1210/clinem/dgae287. PMID: 38661084.

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