Patel Kushang V
Laboratory of Epidemiology, Demography, and Biometry, Intramural Research Program, National Institute on Aging, 7201 Wisconsin Avenue, Bethesda, MD 20892, USA.
Semin Hematol. 2008 Oct;45(4):210-7. doi: 10.1053/j.seminhematol.2008.06.006.
Anemia is a common, multifactorial condition among older adults. The World Health Organization (WHO) definition of anemia (hemoglobin concentration <12 g/dL in women and <13 g/dL in men) is most often used in epidemiologic studies of older adults. More than 10% of community-dwelling adults age 65 years and older has WHO-defined anemia. After age 50 years, prevalence of anemia increases with advancing age and exceeds 20% in those 85 years and older. In nursing homes, anemia is present in 48% to 63% of residents. Incidence of anemia in older adults is not well characterized. Among older adults with anemia, approximately one third have evidence of iron, folate, and/or vitamin B(12) deficiency, another third have renal insufficiency and/or chronic inflammation, and the remaining third have anemia that is unexplained. Several studies demonstrate that anemia is associated with poorer survival in older adults. This review details the distribution and consequences of anemia in older adults and identifies future epidemiologic research needs.
贫血是老年人中常见的多因素病症。世界卫生组织(WHO)对贫血的定义(女性血红蛋白浓度<12 g/dL,男性血红蛋白浓度<13 g/dL)在老年人流行病学研究中最为常用。65岁及以上社区居住成年人中超过10%患有WHO定义的贫血。50岁以后,贫血患病率随年龄增长而增加,85岁及以上人群中超过20%患有贫血。在养老院中,48%至63%的居民患有贫血。老年人贫血的发病率尚无明确特征。在患有贫血的老年人中,约三分之一有铁、叶酸和/或维生素B12缺乏的证据,另有三分之一有肾功能不全和/或慢性炎症,其余三分之一患有不明原因的贫血。多项研究表明,贫血与老年人较差的生存率相关。本综述详细阐述了老年人贫血的分布和后果,并确定了未来流行病学研究的需求。