Gavrilova S I
Zh Nevropatol Psikhiatr Im S S Korsakova. 1987;87(8):1187-92.
A wide-scale programme of gerontopsychiatric epidemiological research using various mutually supportive methodological approaches (analysis of the statistics and examination of representative samples of the general population and of the group of registered patients) has made it possible to obtain the maximally complete picture of the mental health of elderly patients residing at a limited area of a large industrial city. It has been found that among the elderly patients registered at mental institutions there is an ever growing number of patients with endogenic psychoses while individuals with age-related diseases proper constitute only a comparatively small portion. Thus, schizophrenia has accounted for 43.5% of all cases. Ratio of patients with psychotic and non-psychotic disturbances at this age constitutes 3.8:1.
一项大规模的老年精神疾病流行病学研究计划采用了各种相互支持的方法（对统计数据进行分析，并对普通人群和登记患者群体的代表性样本进行检查），从而有可能获得居住在一个大型工业城市有限区域内的老年患者心理健康的最完整情况。研究发现，在精神机构登记的老年患者中，内因性精神病患者的数量不断增加，而患有适当的与年龄相关疾病的个体仅占相对较小的比例。因此，精神分裂症占所有病例的43.5%。这个年龄段的精神病和非精神病障碍患者的比例为3.8:1。
