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Article History

Received: 18 November 2021

Accepted: 11 January 2022

First Online: 30 January 2022

Declarations

:

: Ethics board approval was not required for the current study, because only secondary data analysis of the completely anonymized data was conducted, and ethical approval is not mandatory for general surveys in Germany when anonymized data are analyzed. The permanent advisory board to the German Ageing Survey concluded that the German Ageing Survey study also did not need approval from an ethics committee because it did not meet the criteria for requiring an ethical statement (risk for the respondents, lack of information about the aims of the study, examination of patients). This rationale is supported by the German Research Foundation-guidelines available at ExternalRef removed. The German Ageing Survey meets the ethical standards delineated in the 1964 Declaration of Helsinki and its amendments. Prior to the interview, written informed consent was given by all participants of the study. The permanent advisory board of the German Centre of Gerontology, however, approved of the sampling method, the consent to participate and the instruments used in the study, which were also in line with national regulations.

: Not applicable.

: The authors declare that they have no competing interests.