Newacheck P W, Budetti P P, McManus P
Am J Public Health. 1984 Mar;74(3):232-6. doi: 10.2105/ajph.74.3.232.
This article summarizes and analyzes possible explanations for the near doubling, since 1960, of the proportion of children with limitations of activity due to chronic illness as reported in the National Health Interview Survey (NHIS). We examine several possible explanations for the upward trend in prevalence including: changes in survey design and procedures; changes in awareness of chronic illness on the part of parents and physicians; and changes in the institutionalized population of disabled children. Our analysis indicates that only a small part of the trend can be explained directly by these factors. Further examination of the NHIS data reveals that the types of limitations of activities now reported are less likely to cause frequent confinement in bed; whether this indicates lesser severity or principally different types of chronic conditions is as yet unclear.
本文总结并分析了自1960年以来，美国国家健康访谈调查（NHIS）所报告的因慢性病导致活动受限的儿童比例几乎翻番的可能原因。我们研究了患病率上升趋势的几种可能原因，包括：调查设计和程序的变化；家长和医生对慢性病认识的变化；以及残疾儿童机构收容人数的变化。我们的分析表明，这些因素只能直接解释该趋势的一小部分。对NHIS数据的进一步研究表明，现在报告的活动受限类型导致频繁卧床的可能性较小；这是表明病情较轻还是主要是不同类型的慢性病，目前尚不清楚。
