Fig. 1.
Boxplots for cerebrospinal fluid (CSF) levels in each sample of the three participating Euro-SCD centers. Values are presented in pg/ml. Points mark individual values lying outside 1.5 times the interquartile range (25–75% percentile). Asterisks mark extreme values lying outside three times the interquartile range. #The DELCODE and IDIBAPS sample show significantly lower levels compared with the ADC sample (p < 0.001). ADC Amsterdam Dementia Cohort, DELCODE German Center for Neurodegenerative Diseases (DZNE) multicenter Longitudinal Cognitive Impairment and Dementia Study, IDIBAPS l’Institut d’Investigacions Biomèdiques August Pi i Sunyer Hospital Clinic Barcelona