Table 2.

Overnight (21:30–08:00) Characteristics Based on YSI and Continuous Glucose Monitoring Data

	Open loop		Closed loop
	YSI	CGM	YSI	CGM
Average blood glucose (mmol/liter)	6.78	6.66	6.89	6.75
Standard deviation of blood glucose (mmol/liter)a	2.0	1.83	1.57	1.35
Percentage of time within 3.9–10 mmol/liter	80.6	81.1	89.0	90.2
Hypoglycemia (percentage of time below 3.9 mmol/liter)b	8.44	9.1	2.0	2.3

^aTrend.

^bSignificant difference.