[Mortality and life expectancy that attributable to high blood pressure in Chinese people in 2013]

Objective: To estimate the deaths (mortality) and life expectancy that attributable to high blood pressure in people from different regions and gender, in China in 2013. Methods: Data was from the 'China Chronic Disease Risk Factor Surveillance 2013' and the 'China National Mortality Surveillance 2013'. According to the comparative risk assessment theory, population attributable fraction (PAF) of high blood pressure by gender, urban-rural, east-central-west regions was calculated before the estimations on deaths (mortality) and life expectancy attributable to high blood pressure was made. Results: In 2013, among the Chinese people aged 25 years old and above, the mean SBP was (129.48±20.27) mmHg. High blood pressure[SBP>(115±6) mmHg]caused 20.879 million deaths and accounted for 22.78% of the total deaths. SBP, deaths, mortality rate and standardized mortality rate that attributable to high blood pressure all appeared higher in men [(131.15±18.73) mmHg, 11.517 million, 165.56/100 000 and 106.97/100 000, respectively]than in women[(127.79±21.60) mmHg, 9.362 million, 141.99/100 000 and 68.93/100 000, respectively]. SBP, deaths, mortality rate and PAF were all seen higher in rural[(130.25±20.66) mmHg, 11.234 million, 178.58/100 000 and 23.59%, respectively]than in urban[(128.58±19.77) mmHg, 9.645 million, 132.87/100 000 and 21.54%, respectively]areas. However, levels of SBP were similar in the east, central or west regions, with attributable deaths, attributable mortality rate and PAF the highest as 7.658 million 179.93/100 000, and 26.72% respectively. In 2013, among the Chinese people aged 25 years old and above, deaths caused by cardiovascular disease and chronic kidney disease attributable to high blood pressure were 19.912 million and 0.966 million, accounting for 52.31% of the total deaths due to cardiovascular diseases and 62.11% to the total chronic kidney diseases. The top three deaths attributable to high blood pressure were ischemic heart disease (6.656 million), hemorrhagic stroke (5.331 million) and ischemic stroke (3.593 million). When the effect of high blood pressure had been eliminated, the life expectancy per capita would have increased by 2.86 years old, with higher in women than in men (3.07 and 2.64 years old, respectively), higher in central than in east and west (3.48, 2.56 and 2.58 years, respectively) areas, in rural than in urban (2.97 and 2.59 years, respectively) areas. Conclusions: In 2013, the number of deaths attributable to high blood pressure was around 20.9 million, accounting for 22.78% of the total deaths, and appeared higher in men than in women, in rural than in urban, in central than in east and west areas. The mortality burden induced by ischemic heart disease, hemorrhagic stroke and ischemic stroke was most serious since the high blood pressure brought about 2.86 years of lost in life expectancy.