[Analysis on mortality trends of road traffic injury in Tianjin, 2000-2019].

Objective: To investigate the mortality trends of road traffic injury in Tianjin from 2000 to 2019, understand the mortality of road traffic injury in different populations and provide evidence for the prevention and control of road traffic injury. Methods: Mortality data of road traffic injury in Tianjin during 2000-2019 were collected from the Population Based Mortality Surveillance System in Tianjin. Population data of permanent residents were collected from Tianjin Municipal Public Security Bureau. The crude mortality rate, the Chinese age-standardized rates, and premature mortality probability and gender and area specific constituent ratio were calculated. The trends in different populations were analyzed by using Joinpoint regression analysis. The average annual percent change (AAPC) and annual percent change (APC) were calculated. Results: From 2000 to 2019, a total of 26 919 deaths due to road traffic injury occurred in Tianjin. The death constituent ratio decreased from 21.28% to 18.38% in urban males and the death constituent ratio in urban women declined from 7.01% to 6.28%. The death constituent ratio declined from 59.16% to 55.59% in rural males, whereas the death constituent ratio in rural women increased from 12.55% to 19.75%. From 2000 to 2019, the crude mortality rate of road traffic injury declined from 14.08/100 000 to 7.89/100 000, and the age-standardized mortality declined from 13.28/100 000 to 5.51/100 000. The probability of premature mortality was 0.70% in 2000 and 0.38% in 2019. The mortality rate and premature mortality probability of road traffic injury increased first, then decreased slightly and then decreased rapidly. The mortality of road traffic injury increased with age. From 2000 to 2019, the mortality of road traffic injury in males was higher than in females, but showed a rapid decline. The age-standardized mortality rate was 20.97/100 000-8.01/100 000 in males, and 5.10/100 000-2.85/100 000 in females. Compared with the urban area, the mortality rate in rural area was higher, but declined more rapidly in recent years. The age-standardized mortality rate decreased from 6.99/100 000 to 2.46/100 000 in urban area, and from 19.85/100 000 to 8.75/100 000 in rural area. As the population with the highest mortality of road traffic injury, the morality rate in males in rural area had decreased rapidly since 2016, the APC of age-standardized mortality rate from 2016 to 2019 was -18.55%. Conclusions: The effect of the road safety promotion in Tianjin was significant. The mortality of road traffic injury showed a downward trend, especially in recent years. It is necessary to strengthen the prevention and control of rode traffic injury in males, rural residents and elderly people.