Accuracy of FreeStyle Libre flash glucose monitoring in patients with type 2 diabetes who migrated from highlands to plains

Table 2 Deviation of scanned blood glucose levels using the FreeStyle Libre FGM system in different blood glucose concentration groups

Group	n	MAD (mean ± SD, mmol/L)	MARD (mean ± SD, %)
< 2.77	1	1.32	63.46
2.77-4.44	42	0.85 ± 0.82	21.85 ± 21.91
4.45-6.66	171	1.13 ± 0.94	20.56 ± 18.60
6.67-11.10	508	1.10 ± 0.94	12.72 ± 10.75
11.11-16.65	252	1.53 ± 1.14	11.66 ± 8.78
16.66-22.20	35	2.74 ± 3.24	14.71 ± 17.49
> 22.20	4	3.11 ± 2.33	13.25 ± 9.61

MARD: Mean absolute relative difference; MAD: Mean absolute difference.