CIRCADIAN FLUCTUATIONS OF THE ALL-CAUSE MORTALITY AMONG MEN OF ELDERLY AND SENILE AGE FOR A 13-YEAR PERIOD
Aim. To study the circadian fluctuations of the all-cause mortality among men of elderly and senile age depending on day of week, month of year, a season, changing to daylight saving time. Methods. Prospective supervision over 1067 men of 60 years and upward for a 13-year period. The all-cause mortality depending on transition into daylight saving time counted for March and October and compared to indicators of April and November accordingly. Results. The all-cause mortality rate had made 1668.5 on 1000. This indicator in January (177.9 per 1000) and August (175.2 per 1000) was higher, than in November (102.4 per 1000; р <0.05). Dependences of all-cause mortality rate on day of week, a season, сhanging to daylight saving time weren't revealed. The analysis of all-cause mortality rate on days of week in various seasons was revealed that in autumn the greatest all-cause mortality rate was observed on Sunday (83.6 per 1000), the least - on Monday (35.0 per 1000). Besides, on Monday the greatest all-cause mortality rate was observed in winter (35.5 %, or 72.8 per 1000), and the least - in the autumn (17.1 %, or 35.0 per 1000). During other moments of supervision statically significant distinctions weren't revealed.