Patterns of time series of numbers of emergency hospitalizations in mental hospitals in Moscow and Kazan (common features and differences)

We have investigated the numbers of emergency hospitalizations in mental and drug-treatment hospitals in Kazan in 1996–2006 and in Moscow in 1984–1996. Samples have been analyzed by disease type, sex, age, and place of residence (city or village). This study aims to discover differences and common traits in various structures of series of hospitalizations in these samples and their possible relationships with the changing parameters of the environment. We have found similar structures of series of samples of the same type both in Moscow and in Kazan. In some cases, cyclic structures of series of numbers of hospitalizations and series of changes in solar activity and the rate of rotation of the earth change simultaneously.