Table 1.

Percentages of Glucose Measurements in Different Ranges Comparing Continuous Glucose Monitoring and Reference Glucose Measurements

	Overall		Daytime		Nighttime
	CGM	Reference	CGM	Reference	CGM	Reference
All values (n)	52,146	5,195	27,944	2,830	24,202	2,365
71–180 mg/dL (%)	59	60	58	56	61	65
>180 mg/dL (%)	28	31	35	36	21	24
>250 mg/dL (%)	9	10	10	12	8	8
≤70 mg/dL (%)	12	9	8	7	17	11
≤60 mg/dL (%)	6	4	4	3	9	5
Mean glucose (mg/dL)	148	154	159	164	134	142
Area under the curve 70 mg/dL	1.31	0.77	0.80	0.59	1.89	0.98
Low Blood Glucose Index	2.4	1.8	1.6	1.4	3.4	2.2
Area under the curve 180 mg/dL	16.04	19.16	19.18	23.83	12.41	13.58
High Blood Glucose Index	6.6	7.5	7.8	8.9	5.1	5.8
Glucose CV (%)	47	47	43	46	50	47
Limited to paired values (n)	5,206	5,206	2,950	2,950	2,256	2,256
71–180 mg/dL (%)	60	60	58	56	63	65
>180 mg/dL (%)	31	31	37	36	23	23
>250 mg/dL (%)	9	10	10	12	8	7
≤70 mg/dL (%)	9	9	6	7	14	12
≤60 mg/dL (%)	5	4	3	3	7	5
Mean glucose (mg/dL)	153	154	163	164	139	141
Area under the curve 70 mg/Dl	0.97	0.83	0.60	0.61	1.45	1.11
Low Blood Glucose Index	1.9	1.8	1.3	1.4	2.7	2.4
Area under the curve 180 mg/dL	17.38	19.01	20.75	23.57	12.97	13.06
High Blood Glucose Index	7.1	7.4	8.3	8.8	5.5	5.6
Glucose CV (%)	45	47	42	46	47	47

CGM, continuous glucose monitoring; CV, coefficient of variation (SD/mean).