ABSTRACT
Objective@#To analyze the epidemiological characteristics of hepatitis E Virus antibody (anti-HEV) in people aged 1-29 years in China in 2014.@*Methods@#Based on database of the national serologic survey of hepatitis B in people aged 1-29 years in China, in 2014, the sample size was estimated. The serum samples of the people surveyed were randomly selected to detect anti-HEV IgG by using enzyme- linked immunosorbent assay (ELISA). Statistical software SAS 9.1.3 was used to calculate the positive rate of anti-HEV and 95% confidence interval (CI) in different age, gender groups, urban and rural areas and geographic areas by using the Taylor series linear method with sampling weight. The difference was determined by comparing 95%CI.@*Results@#A total of 14 106 serum samples were detected from people aged 1-29 years, including 6 996 males (49.60%), 7 013 urban residents (49.72%). The positive rate of anti-HEV was 8.12%(95%CI: 7.19-9.15) in people aged 1-29 years. There was no statistical difference between the men and women, between urban area and rural area. The positive rates of anti-HEV in western area(11.36%, 95%CI: 9.45-13.62) was higher than those in eastern and central areas. The positive rates of anti-HEV were 2.46%, 2.24%, 4.50%, 7.58%, 11.89% and 17.27% in people aged 1-, 5-, 10-, 15-, 20- and 25-29 years, respectively. As the age increased, the positive rate of anti-HEV gradually increased. In different ethnic groups, the positive rate of anti-HEV was higher in Tibetan (18.32%, 95%CI: 12.02-26.90), Zhuang (9.54%, 95%CI: 4.33-19.73) ethnic groups.@*Conclusion@#The positive rate of anti-HEV declined slightly in China in 2014. It is still necessary to pay close attention to the HEV infection, morbidity of hepatitis E and risk factors in people aged 1-29 years.
ABSTRACT
Objective To understand the epidemiologic characteristics of injury among adults in Guizhou province.Methods A questionnaire survey was conducted among 9 280 residents aged ≥ 18 years selected though multistage cluster random sampling in Guizhou to collect the information about their demographic characteristics and incidence data of injury.Logistic regression analysis was done to identify the risk factors.Results The incidence of injury was 3.5％ in the adults surveyed (3.6％ in males,3.4％ in females).The incidences of injury in both urban area and rural area were same (3.5％).The incidence of injury was 3.9％ in age group 18-44 years,2.7％ in age group 45-59 years,and 3.5％ in age group ≥60 years,the differences among different age groups were statistically significant (x2=7.949,P=0.019).The top three injury causes were fall (35.0％),road traffic accident (20.0％) and animal bite (19.2％).The top three injury causes in the elderly were fall (59.3％),animal bite (22.0％) and sharp instrument cut (10.2％).Among the elderly,the incidence of road traffic injury was higher in males (1.1％) than in females (0.3％),the difference was statistically significant (x2=18.156,P=0.000).The incidence of fall in urban area (1.6％) was higher than that in rural area (1.1％),the difference was statistically significant (x2=4.616,P=0.032).Drinking and drunk driving,fatigue driving,smoking and gender were the influencing factors for injury.Conclusion Injury related high risk behaviors were common in adults in Guizhou,it is necessary to develop effective intervention measures to prevent injury.