Funding for this research was provided by:
Svenska Forskningsrådet Formas (2012-5041, 2015-02830, 2013-8717)
Konung Gustaf V:s och Drottning Victorias Frimurarestiftelse (Not applicable)
Hjärnfonden (Not applicable)
The Swedish state under the agreement between the Swedish government and the county councils, the ALF-agreement (ALF 716681)
The Swedish Research Council for Health, Working Life and Welfare (2013-2300, 2013-2496, 2013-1202, 2018-00471)
The Swedish Alzheimer Foundation (Not applicable)
The Swedish Brain Foundation (Not applicable)
Eivind och Elsa K:son Sylvans stiftelse (Not applicable)
The Stena Foundation (Not applicable)
Received: 30 October 2019
Accepted: 13 August 2020
First Online: 4 September 2020
Ethics approval and consent to participate
: Informed consent in written form was acquired from all participants. In cases of severe cognitive impairment, proxy-consent was obtained from a next-of-kin. All H70/PPSW examination waves were approved by the regional Ethical Review Board for medical research in Gothenburg, Sweden: 2000 (ref: Ö402–99), 2004 (ref: T453 04), 2009 (ref: 075–09).
: Not applicable. Data are anonymized and results are reported in aggregate form only.
: The authors declare that they have no competing interests.