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. 2021 Sep 13;21(18):6131. doi: 10.3390/s21186131

Figure 4.

Figure 4

Linear association between changes obtained after switching from FSL1 to DG4 at M12 for TIR with TAR > 180 mg/dL (A) or with TAR > 250 mg/dL (B), and for glucose %CV with TBR < 70 mg/dL (C) or with TBR < 54 mg/dL (D). Changes were calculated from DG4 12-month parameters − FSL1 last 3-month parameters (values at M12 − values at M0) in 21 T1D patients and are expressed as percentage points. Correlation analysis was performed using Spearman’s rank correlation coefficient denoted by “r” for rho on the figure (p < 0.05). Equation of the line for A or B: change in TAR > 180 mg/dL= −1.02 × [change in TIR] + 5.43; change in TAR > 250 mg/dL = −0.52 × [change in TIR] + 2.20. Equations of the lines for C or D: change in TBR < 70 mg/dL = 0.65 × [change in %CV] − 1.16; change in TBR < 54 mg/dL = 0.43 × [change in %CV] − 0.24. Abbreviations: %CV, glucose coefficient of variability; DG4, Dexcom platinum G4; FSL1, FreeStyle Libre version 1; T1D, type 1 diabetes; TBR, time-below-range; TIR, time-in-range; TAR, time-above-range. No association was found between the number of scan/d with FSL1 at M0 and the evolution of metrics with DG4 over 12 months of follow-up.