[1] Chia Yi Christian Hosp, Dept Community Hlth, Ditmanson Med Fdn, Chiayi, Taiwan
[2] Chia Yi Christian Hosp, Dept Internal Med, Ditmanson Med Fdn, Chiayi, Taiwan
[3] Chia Yi Christian Hosp, Dept Med Res, Ditmanson Med Fdn, Chiayi, Taiwan
[4] Min Hwei Coll Hlth Care Management, Dept Nursing, Tainan, Taiwan
[5] Wufeng Univ, Dept Long Term Care, Minxiong, Taiwan
[6] Minist Hlth & Welf, Hlth Promot Adm, Taipei, Taiwan
[7] Natl Cheng Kung Univ, Coll Med, Inst Gerontol, 1 Univ Rd, Tainan 701, Taiwan