Study on spatial and temporal distribution of longevity in Tibet
Objective To study the characteristics of Tibetan longevity person`s regional distribution.Methods Based on the national census data of 2000 and 2010, the population aged over 75 was defined as the longevity population, and the proportion of the longevity population was calculated on the basis of the population over 65 years old;combined with the data of Tibet population and used statistical methods to compare the distribution of longevity population in two census of Tibet.Results A significant increase in longevity population of Tibet was observed in the last ten years.The average life expectancy increased to 68 years, and the number of longevity population in male was lower than that in female;Qamdo district showed the largest longevity population in Tibet, accounting for the highest proportion in population aged more than 65 years.The growth rate of longevity population in some economic backward areas was higher than other regions in the last ten years.Conclusions The number of longevity population increased greatly, and the number of longevity population was positively associated with number of medical and health institutions, while negative association was observed with the growth rate of GDP.In Tibet, the longevity of the population distribution is characterized by regions, and the increased proportion of longevity population in remote regions was higher than other regions.