Table 2.

Linear regression analyses for the association among laboratory HbA1c, POCT- HbA1c, and GMI in isCGM users

Model	Parameters	R	R2	Adj R2	Standardize β	B (95% CI)	p value
Unadjusted	GMI-28	0.82	0.672	0.66	0.82	2.87 (1.45–4.37)	< 0.001
	GMI-90	0.81	0.656	0.64	0.81	1.05 (0.75–1.35)	< 0.001
	POCT-HbA1c	0.86	0.740	0.72	0.86	0.94 (0.72–1.16)	< 0.001
Adjusted Module 1	GMI-28	0.84	0.706	0.69	0.83	0.70 (0.51–0.88)	< 0.001
	GMI-90	0.83	0.689	0.66	0.83	1.08 (0.78–1.37)	< 0.001
	POCT-HbA1c	0.86	0.740	0.71	0.85	0.93 (0.71–1.16)	< 0.001
Adjusted Module 2	GMI-28	0.86	0.740	0.69	0.79	0.66 (0.47–0.85)	< 0.001
	GMI-90	0.84	0.706	0.64	0.84	1.19 (0.76–1.44)	< 0.001
	POCT-HbA1c	0.86	0.740	0.68	0.84	0.93 (0.67–1.19)	< 0.001
Adjusted Module 3	GMI-28	0.87	0.757	0.68	0.74	0.62 (0.41–0.83)	< 0.001
	GMI-90	0.91	0.828	0.73	0.80	1.1 (0.73–1.39)	< 0.001
	POCT-1 HbA1c	0.91	0.828	0.73	0.79	0.87 (0.61–1.12)	< 0.001

Dependent variable is laboratory HbA1c, and independent variables are GMI-28, GMI-90, and POCT- HbA1c

Module 1 was adjusted for age and gender. Module 2 was adjusted for all variables in Model 1 plus duration of DM, type of diabetes, and treatment. Module 3 was adjusted for all variables in Model 2 plus glucose variability, percentage of sensor data, and FSL scanning frequency per day