Funding for this research was provided by:
Nursing Home Agency, Oslo municipality
Received: 16 May 2018
Accepted: 12 February 2019
First Online: 19 February 2019
Ethics approval and consent to participate
: According to the Norwegian act on medical and health research, no formal ethical approval was needed for the present study. Formal consent was not required because data is anonymous.The study protocol of the medication review project at the nursing homes, which generated part of the data used here, was presented to the Regional Committee in Medical Research Ethics in South-East Norway (reference no. 2015/786) and the Norwegian Centre for Research Data (reference no. 43659). Both bodies concluded that their formal approval was not needed. The other part of the data used here was aggregated tabulated data retrieved from the Norwegian Prescription Database (NorPD). No permissions were required to access and retrieve the study data. The privacy of the individual is strictly protected and data is anonymous.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.