However, the interaction effect between the earthquake and the use of CGM device was found to be highly significant ( F = 17.257, P < .001), indicating that the change in HbA1c levels between the 2 time points varied significantly based on whether participants were using CGM device.
Age-Based Analysis of Glycated Hemoglobin Changes in the Continuous Glucose Monitoring-Positive Group When the CGM (+) group was divided into 2 subgroups according to age: <12 years and ≥12 years, the decrease in HbA1c in the younger group did not reach statistical significance, whereas the decrease in the older group was statistically significant ( P < .001) ( Table 2 ).