Table 1.

Characteristics of participants

	Control subjects without diabetes	Participants with type 1 diabetes	All participants
Sex (% male:female)	40:60	55:45	48:52
Age (years)	32 (22–44)	30 (19–39)	30 (19–44)
BMI (kg/m2)	24.6 (18.9–31.5)	24.6 (19.7–27.9)	24.9 (6.66)
NART error score	8 (3–21)	14 (3–24)	12 (3–24)
Predicted IQ	121 (126–111)	116 (108–126)	118 (108–126)
HbA1c, mean (SD) (mmol/mol [%])	N/A	58 (0.83) [7.5 (0.09)]	N/A
Duration of diabetes (years)	N/A	5 (2–27)	N/A

Data are given as median (range) unless otherwise stated. Predicted IQ was calculated using the following formula: 128 − 0.83 × NART error score.