Fig. 1

Differences in basal insulin levels (mIU/L) according to a type of diagnosis (PKU vs MHPA); b Phe tolerance (high or free vs low); c age (under 18 years vs over 18 years); d BMI (normal and underweight vs overweight and obesity); and e WC (normal and underweight vs overweight and obesity). PKU: phenylketonuria; MHPA: mild hyperphenylalaninemia; Phe: phenylalanine; BMI: body mass index; WC: waist circumference; n: sample size; p: p-value