[Methodological approaches to a prognostic assessment of the age at which paroxysmal-like schizophrenia begins]

Basing on findings of examinations of a population of patients with attack-form long-standing schizophrenia (25 years and more), the author shows the advantages of the clinico-epidemiological method used in combination with multidimensional mathematical analysis to determine the true informative value of the "age at the onset of the disease" parameter for long-term socio-occupational prognosis. The analysis has made it possible to refer this sign to the mathematically determined complex of the most informative predictors.