[1] Duke Univ, Sch Nursing, 307 Trent Dr, Durham, NC USA
[2] Univ N Carolina, Sch Nursing, Charlotte, NC 28223 USA
[3] Univ Texas Hlth Sci Ctr Houston, Ctr Aging, Houston, TX 77030 USA
[4] Univ Texas Hlth Sci Ctr Houston, Ctr Nursing Res, Houston, TX 77030 USA
[5] SLH Clin Consulting, East Grand Rapids, MI USA
[6] Inst Clin Outcomes Res & Int Severity Informat Sy, Salt Lake City, UT USA