Table 1.

Baseline characteristics of the 10 study participants

Characteristic	Value
Age, years	32.6 ± 4.3
Ethnicity: not Hispanic or Latino, no. (%)	10 (100)
Race: White, no. (%)	10 (100)
Duration of diabetes, years	16.6 ± 7.8
Weight, kg	75.7 ± 17.2
BMI*	27.2 ± 4.9
Glycated hemoglobin, %	5.8 ± 0.6
Gestational age at enrollment, weeks	22.0 ± 3.4
First pregnancy, no. (%)†	4 (40)
Pump type, no. (%)
Sensor-augmented pump	6 (60)
Predictive low-glucose suspend	3 (30)
Hybrid closed loop	1 (10)
Duration of pump use, no. (%)
6 months to 1 year	1 (10)
1–5 years	3 (30)
5–10 years	1 (1)
>10 years	5 (50)
CGM user at enrollment, no. (%)	10 (100)
Duration of CGM use, no. (%)
3–6 months	1 (10)
1–5 years	7 (70)
5–10 years	1 (10)
>10 years	1 (10)
Metformin use	0 (0)
Average total daily insulin during run-in, units	41.7 ± 15
Average total daily insulin during run-in, units/kg	0.55 ± 0.18

Data are mean ± SD unless otherwise indicated. CGM, continuous glucose monitoring.

^*BMI is the weight in kilograms divided by the square of the height in meters.

^†See Supplementary Material for details of participants’ obstetric history.