[1] Univ Pittsburgh, Div Geriatr Med, Dept Med, Pittsburgh, PA 15213 USA
[2] Univ Pittsburgh, Sch Med, Dept Biomed Informat, Pittsburgh, PA USA
[3] Univ Pittsburgh, Grad Sch Publ Hlth, Dept Hlth Policy & Management, Pittsburgh, PA 15260 USA
[4] VA Pittsburgh, GRECC, Pittsburgh, PA USA
[5] Univ Pittsburgh, Dept Biostat, Pittsburgh, PA 15261 USA
[6] Univ Pittsburgh, Sch Pharm, Dept Pharm & Therapeut, Pittsburgh, PA 15261 USA
[7] Vet Affairs Pittsburgh Healthcare Syst, Ctr Hlth Equity Res, Pittsburgh, PA USA