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Article History

Received: 13 September 2018

Accepted: 31 January 2019

First Online: 8 February 2019

Ethics approval and consent to participate

: The questionnaire was completed by nursing home staff without the direct involvement of the residents. Informed consent, written or verbal, was not obtained from all participants but an opt-out consent procedure was used. Written information about the study was provided to all participants as well as on information posters in the entrances to the nursing homes, and residents as well as their relatives could decline participation if they did not want to contribute their data. The Regional Ethical Review Board in Umeå, Sweden approved the study (no. 07-028 M and 2012–646-31 M).

: Not applicable.

: The authors declare that they have no competing interests.

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