Auswirkungen des Ahrtal-Hochwassers auf die Gesundheit der lokalen Bevölkerung – eine Analyse auf Grundlage von GKV-Routinedaten

In recent decades, Germany has experienced flood events that posed a threat to the health of the local population. However, there is a paucity of studies on the health consequences of these events. Therefore, the aim of the study was to investigate the health consequences of the Ahr Valley flood in 2021.

The data basis of this longitudinal study are nationwide billing data (inpatient/outpatient) of the BKK-Landesverband Nordwest. The study region was Ahrweiler and the study periods were the third quarters of 2020 and 2021. Among other things, prevalence rate ratio tests were used to determine which diagnoses (inpatient/outpatient) were spatially and temporally associated with the flood event on the basis of ICD-10 coding.

The results show a significant increase in billed services for some diagnosis groups in the inpatient sector. In particular, there was an increase in F diagnoses (mental and behavioural disorders), S diagnoses (injuries) and various diagnosis codes within Z codes (factors influencing health status and leading to healthcare utilisation). In the outpatient sector, a decrease was observed in many diagnosis groups (F and Z diagnoses).

The results of the study showed that the mental health of the local population was particularly affected by the floods. Healthcare was also affected. As floods are expected to become more frequent and severe in the future, measures to protect the population and health infrastructure need to be adapted accordingly.