Participants and material
chronic disease
AIDS, CHRONIC DISEASE
All children or adolescents enrolled in the 
Sex (male/female).Age (U10: 7/8 years; U11: 9/10 years; J2: 16/17 years).Federal State (Berlin/Brandenburg/Mecklenburg-Western Pomerania).Presence of a chronic disease (yes/no).The routine data of the AOK Nordost for the period 2010 to 2019 serves as the data basis for IG and CG. Data sets on outpatient services, inpatient services, prescription drugs, medical remedies, medical aids, and rehabilitation as well as basic data are included in the analyses. The data are subjected to a plausibility check prior to the start of the analysis.