Hong, Ickpyo http://orcid.org/0000-0001-5404-7646
Reistetter, Timothy A. http://orcid.org/0000-0003-1732-5533
Díaz-Venegas, Carlos http://orcid.org/0000-0001-5802-6260
Michaels-Obregon, Alejandra
Wong, Rebeca http://orcid.org/0000-0001-7287-0660
Funding for this research was provided by:
National Institute on Aging (U01AG009740)
Article History
Accepted: 3 May 2018
First Online: 10 May 2018
Compliance with ethical standards
:
: All author declares that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This study was exempted by the Institutional review boards (IRB) of the University of Texas Medical Branch because the research is a study of an existing data sets, the US Health and Retirement Study and the Mexican Health and Aging Study which are publicly available. The study data set is de-identified, such that subjects cannot be identified directly, or through identifiers linked to the subjects.