美国、加拿大对老年病人某些医疗费和住院费由国家负担称为国家医疗照顾制（Ｍｅｄｉｃａｒｅ，亦作Ｍ－ ）。文中对享受Ｍ－ 的≥６５ 岁的老人因股骨骨折、中风、冠心病与充血性心衰於１９８４ 年１ 月１ 日至１９９４ 年１２ 月３１ 日间住进各类医院的老年患者，从医疗费用与治疗质量上以教学医院的与其它医院的作对比。费用是初进医院六个月、存活率是１９９５ 年的情况。 In the United States and Canada, some medical expenses and hospital fees for elderly patients are borne by the state as the National Medical Care System (Medicare, also known as M-). The elderly patients admitted to various hospitals from January 1, 1984 to December 31, 1994 for femur fractures, strokes, coronary heart disease, and congestive heart failure who enjoyed M- ≥ 65 years old The cost and quality of treatment are compared between the teaching hospital and other hospitals. The cost was the first admission to the hospital for six months and the survival rate was 1995.