Sleep characteristics, chronotype and winter depression in 10-20-year-olds in northern European Russia.

The purpose of this work was to examine the relationships between geographical coordinates and the prevalence of winter depression (SADW ), and to compare the sleep characteristics and chronotype of youths with and without SADW . We conducted a cross-sectional study of self-reported sleep characteristics, chronotype and winter depression in northern European Russia. Two questionnaires, the Munich Chronotype Questionnaire (MCTQ) and the Seasonal Pattern Assessment Questionnaire (SPAQ), were administered to a total of 3435 adolescents aged 10-20 years (1517 males and 1918 females).

[Scientific and technologic aspects of equipping the preventive services department during general mass screening of the population].

The analysis of the screening stage of follow-up medical technology practice has been carried out. The study tackles the problems of selection of medical programmes of mass periodic medical check-ups, definition of diagnostic informative indices and their biometrology, programme algorithmic control with its preliminary diagnostic decisions, wide use of an individual principle of health status assessment and further organization of check-up flows, building up of technical equipment patterns for prophylactic departments. A two-stage system of technical equipment patterns of prophylactic departments in a city polyclinic is discussed.