Estimated prevalence of people with cognitive impairment: Results from nationally representative community and institutional surveys
Estimated prevalence of people with cognitive impairment: Results from nationally representative community and institutional surveys
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DOI：
10.1093/geront/47.3.350
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发表时间：
2007-06-01
期刊：
影响因子：
5.7
通讯作者：
Remsburg, Robin E.
中科院分区：
文献类型：
--
作者：
Bernstein, Amy B.;Remsburg, Robin E.
目的：我们讨论如何从两个具有全国代表性的调查中估计全国认知障碍的患病率。设计和方法：数据来源于1999-2001年全国健康访谈调查(NHIS)和1999年全国养老院调查(NNHS)。NHIS代表居住在美国的所有社区居民，NNHS代表所有疗养院居民。结果：NHIS数据显示，大约有80万65岁及以上的社区老年人报告有困惑或记忆丧失，230万老年人报告因衰老或痴呆症导致活动受限。据估计，65岁及以上的养老院居民中有63.2万人被诊断为痴呆症。影响：基于具有全国代表性的数据对认知障碍患病率的估计很少见，因为使用标准的、经过验证的认知障碍评估方法来综合评估国家样本既困难又昂贵，而且因为大多数国家调查基础广泛，设计涵盖各种主题。这些多用途调查中包括的认知障碍的粗略测量，如存在困惑或记忆丧失或因衰老或痴呆症造成的限制，可能只是临床评估认知障碍的粗略替代指标，但它们确实似乎产生了与使用更精确的病例确定方法得出的估计类似的患病率估计。这些具有全国代表性的数据集可以用来生成与认知障碍患者的流行率、流行病学和医疗保健利用模式有关的假设，这些假设可以在使用更具体的病例确定标准的研究中进行测试。
Purpose: We address how the national prevalence of Cognitive impairment can be estimated from two nationally representative surveys. Design and Methods: Data are from the 1999-2001 National Health Interview Survey (NHIS) and the 1999 National Nursing Home Survey (NNHS). The NHIS represents all community-dwelling people living in the United States, and the NNHS is representative of all nursing home residents. Results: NHIS data show that there are approximately 800,000 community-based elders aged 65 and older with reported confusion or memory loss, and 2.3 million elders with reported limitation of activity caused by senility or dementia. There are an estimated 632,000 nursing home residents aged 65 and older with a reported diagnosis of dementia. Implications: Estimates of the prevalence of cognitive impairment that are based on nationally representative data are rare, because comprehensively evaluating a national sample by using standard, validated cognitive-impairment assessment methods is difficult and expensive, and because most national surveys are broad based and designed to cover a wide variety of topics. Crude measures of cognitive impairment, such as the presence of confusion or memory loss or limitations caused by senility or dementia, that are included in these multipurpose surveys may be only rough proxies for clinically evaluated cognitive impairment, but they do appear to produce prevalence estimates that are similar to estimates found with the use of more precise case-ascertainment methods. These nationally representative data sets may be used to generate hypotheses related to the prevalence, epidemiology, and health care utilization patterns of people with cognitive impairment that can be tested in studies using more specific case-ascertainment criteria.