GSB 7.1 Standardlösung

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Ambulatory care-sensitive hospitalisations

Complications related to diabetes and its management including hypo- or hyperglycaemia can require hospital treatment. This indicator has been established on an international level and is published by OECD statistics every two years as part of an international comparison of the quality of ambulatory care (OECD, 2023). Following OECD guidelines, only hospitalisations with diabetes as the main diagnosis are considered. While inpatient hospitalisations with diabetes as a secondary diagnosis are not taken into account, these make up a large number of hospitalisations due to the fact that diabetes prevalence increases with age (Lehmann et al., 2019).

Key messages

  • In 2021 and 2022, the rate of ambulatory care-sensitive hospitalisations due to diabetes stagnated at 203 and 205 cases per 100,000 residents respectively, after a sharp decline at the start of the COVID-19 pandemic in 2020.
  • The rate of ambulatory care-sensitive hospitalisations is particularly high in the federal states with high diabetes prevalence and regions with high socioeconomic deprivation.

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trend

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cross-section

By state

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  • By gender

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  • By age

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  • By regional socioeconomical deprivation

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Results

Between 2015 and 2019, rates of hospitalisation with diabetes as the main diagnosis per 100,000 residents is relatively constant with a slight decrease. Subsequently, the rate drops sharply from 248 per 100,000 residents in 2019 to 207 in 2020 and stagnated at that level in 2021 and 2022 with 203 and 205 respectively. For women, the rate is 150 and for men 262 per 100,000 residents in 2022. The decline during the COVID-19 pandemic is also evident in all federal states. In 2022, higher rates were recorded notably in Mecklenburg-Western Pomerania (241 for women; 412 for men per 100,000 residents) than in Hamburg, the state with the lowest rate (women: 101; men: 204). For both women and men, the highest rates of ambulatory care-sensitive hospitalisations due to diabetes are found in regions with high socioeconomic deprivation.

Conclusion

Between 2015 and 2019, the rate of ambulatory care-sensitive hospitalisations due to the indication diabetes decreases slightly. In 2020, there is a sharp decline, which must be interpreted in the context of the COVID-19 pandemic. An analysis by the Leibniz Institute for Economic Research (RWI) shows a sharp decline in all outpatient-sensitive hospital cases - also due to diabetes - from the beginning of the pandemic in March 2020 ("Leistungsgeschehen von Krankenhäusern in der Corona-Krise"; in German only). The hospital report 2023 confirms the finding that after the sharp drop of ambulatory care-sensitive hospital cases with the start of the pandemic these stay at a lower level. A change in behaviour regarding the utilization of health care services is assumed. Overall, women show significantly lower rates compared to men. Regional differences persist in 2022, and the highest rates for ambulatory care-sensitive hospital cases are observed in the federal states with already high prevalence of diabetes. Regions with high socioeconomic deprivation are also associated with higher diabetes prevalence (Grundmann et al. 2014), which contributes to the higher rates of ambulatory care-sensitive hospital cases in these regions. The present analysis does not include rates of hospitalisation for patients with diabetes as a secondary diagnosis.

Show more information on methodology and data sources

Definition

The indicator Ambulatory care-sensitive hospitalisations is defined as the number of inpatient cases with diabetes as the main diagnosis (E10.-/E11.-/E13.-/E14.-) per 100,000 residents (aged 15 years and over) per year.

Reference population

All hospital cases that are billed in accordance with the DRG remuneration system.

Data source

Diagnosis-related groups statistics (DRG statistics) that include all approximately 19 million inpatient cases per year in Germany.

Calculation

  • Observed values: The number of hospitalisations in relation to 100,000 residents.
  • Age standardisation: Direct age standardisation used five-year age groups for the ages 15 to 19 until 80 to 84, and a separate group for the ages 85 and over. The resident population of Germany as of 31 December 2022 was used as the reference population.
  • Stratification: The stratification by federal state is based on place of residence. Stratification by regional socioeconomic deprivation is based on the German Index of Socioeconomic Deprivation (GISD; Years 2019-20: GISD Release 2020; Years 2021-22: GISD Release 2022 v0.2) (Michalski et al. 2022). The GISD provides information on all rural and urban districts and divides them into quintiles ranging from low to high socioeconomic deprivation. The amputation rate was calculated stratified for each quintile after linkage of the GISD with hospitalisations at the district level (ecological correlation).

Data quality

Diagnosis-related Groups (DRG) statistics contain information on all hospitalisations in Germany. They include main and secondary diagnoses, operations and other procedures, as well as information on patients’ age, sex and place of residence. The data are documented on a case by case basis, which means that a person hospitalised more than once will be classified as several cases. Data quality depends on coding practices and other aspects of documentation.