Diabetes complications

Association of Time in Tight Range with Microvascular Complications in Japanese Patients with Type 2 Diabetes Mellitus: A Multicenter Cross-Sectional Study

Diabetes Technol TherPublished Cross-sectional study

Authors' conclusion

Higher TITR was significantly associated with lower prevalence of microvascular complications in patients with T2DM. CGM-derived TITR is a potentially useful clinical metric for optimizing glycemic management and reducing the risk of microvascular complications.

Study context

Population
Japanese patients with T2D and negative history of CVD; Time in tight range (TITR) (70–140 mg/dL) from continuous glucose monitoring (CGM)
Participants
999 patients
Exposure
TITR quartiles
Outcome
Any microvascular complication
Methodological detailsmulticenter
  • Multicenter

Main finding

As reported in the abstract

Each group vs Q1Adjusted odds ratio (95% CI)
Q2
0.39(0.25–0.62)
Q3
0.45(0.28–0.70)
Q4
0.30(0.19–0.47)

Observational data: associations, not effects.

Further findings

TITR and prevalence of microvascular complications (overall)

Mean TITR
56.8 ± 22.4%
≥1 microvascular complication
51.2%

Retinopathy, nephropathy, peripheral neuropathy

Similar inverse trends across TITR quartiles
Each 10% increase in TITR associated with reduced risk of each type of microvasculopathy

Optimal TITR cutoff for identifying microvascular complications (ROC analysis)

Optimal TITR cutoff
54.3%

Original publication

Association of Time in Tight Range with Microvascular Complications in Japanese Patients with Type 2 Diabetes Mellitus: A Multicenter Cross-Sectional Study. Diabetes Technol Ther. Published 4 February 2026. doi:10.1177/15209156251403563

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