Table 1.

Characteristics of the study population

Variable	Phenylketonuria patients n = 19	Controls n = 100
Sex (female/male) [n/%]	15/4 (78.9%/21.1%)	54/46 (54.0%/46.0%)
Age [years]	20 SD 12 (Min. 6, Max. 46), 10 patients were < 18 years	33 SD 18 (Min. 6, Max. 75)
Blood Phe concentration [μmol/l]	782.72 SD 383.09 (Min. 210.60, Max. 1488.00), Median 694.20 -	–
Median yearly blood Phe concentration [μmol/l]	693.32 SD 383.79 (Min. 253.80, Max. 1425.00), Median 704.40	–
Blood tyrosine concentration [μmol/l]	104.48 SD 59.68 (Min. 37.53, Max. 215.79) Median 91.06	–