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Supplementary Material for: Everyday Life, Dietary Practices, and Health Conditions of Adult PKU Patients: A Multicenter, Cross-Sectional Study

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posted on 30.09.2020, 10:03 by Klimek A., Baerwald C., Schwarz M., Rutsch F., Parhofer K.G., Plöckinger U., Heddrich-Ellerbrok M., vomDahl S., Schöne K., Ott M., Lang F., Hennermann J.B.
Background: Only few data on dietary management of adult phenylketonuria (PKU) patients are published. Objectives: This study aimed to assess living situation, dietary practices, and health conditions of early-treated adult PKU patients. Methods: A total of 183 early-treated PKU patients ≥18 years from 8 German metabolic centers received access to an online survey, containing 91 questions on sociodemographic data, dietary habits, and health conditions. Results: 144/183 patients (66% females) completed the questionnaire. Compared with German population, the proportion of single-person households was higher (22 vs. 47%), the rate of childbirth was lower (1.34 vs. 0.4%), but educational and professional status did not differ. 82% of the patients adhered to a low-protein diet, 45% consumed modified low-protein food almost daily, and 84% took amino acid mixtures regularly. 48% of the patients never interrupted diet, and 14% stopped diet permanently. 69% of the patients reported to feel better with diet, and 91% considered their quality of life at least as good. The prevalence of depressive symptoms was high (29%) and correlated significantly to phenylalanine blood concentrations (p = 0.046). However, depressive symptoms were only mild in the majority of patients. Conclusion: This group of early-treated adult German PKU patients is socially well integrated, reveals a surprisingly high adherence to diet and amino acid intake, and considers the restrictions of diet to their daily life as low.

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