Xavier A R, Carvalheiro C D, Ferrari I
Rev Bras Pesqui Med Biol. 1978 May;11(1):39-42.
An incidence rate of 1.66 was determined for Down's syndrome by a check of hospital birth records in the city of Ribeirão Preto for the year 1972, based on the premise that most births in the population residing in the urban area of Ribeirão Preto occur in hospitals. The prevalence rate was estimated as being 25.2. A search for affected individuals born before 1972 was carried out by physical examination of all persons receiving medical care or educational and social assistance from several city institutions. The prevalence value must be considered as an underestimate since the methods used allowed only for the detection of cases which were getting some kind of assistance.
基于里贝朗普雷图市区大多数居民在医院分娩这一前提，通过查阅该市1972年的医院出生记录，确定唐氏综合征的发病率为1.66。患病率估计为25.2。通过对几家城市机构接受医疗、教育和社会救助的所有人进行体格检查，对1972年以前出生的受影响个体进行了筛查。由于所采用的方法仅能检测到正在接受某种救助的病例，因此患病率数值必须被视为低估。
