| Objective:(1)To quantitatively analyze the daily and monthly changes of cardiovascular and cerebrovascular diseases and climatic factors in pre-hospital emergency in city of Haikou from 2015 to 2017,and to understand the relevant epidemiological trends:(2)Analysis and number of patients with pre-hospital emergency cardiovascular and cerebrovascular diseases sensitive climatic factors,to explore the impact of climate factors on the number of pre-hospital emergency cardiovascular and cerebrovascular treatment and the trend of changes,to provide a theoretical basis for the prevention and treatment of cardiovascular and cerebrovascular diseases.Methods: Retrospective analysis and summary of daily data of emergency patients with cardiovascular and cerebrovascular diseases in city of Haikou,Hainan Province,2015-2017,refer to relevant literature and international disease classification methods(classification of emergency cases,statistical analysis The composition of the disease spectrum,including disease classification,date of onset,patient gender,age,etc.;Meteorological data of the China Meteorological Administration Information Center(http://data.cma.cn/)(wind speed,temperature,pressure,relative humidity),application average Descriptive analysis of number,standard deviation,variance,etc.,chi-square test and spearman dual correlation method to analyze the correlation between climatic factors and daily cardiovascular and cerebrovascular diseases in Haikou City First Aid 120 Center in Hainan Province;using Generalized additive model(Generalized additive model,GAM)Fitting the exposure-response curve of all climatic factors and the number of emergency patients with daily cardiovascular and cerebrovascular diseases in the First Aid 120 Center of Haikou,Hainan Province,studying the relationship between climate factors and the daily cardiovascular and cerebrovascular disease of First Aid 120 Center of Haikou,Hainan Province,to predict the trends of disease development.Results: Statistical analysis of epidemiological characteristics: the number of pre-hospital cardiovascular and cerebrovascular diseases was gradually increased from July to February,and gradually decreased from March to June;the ages of 0-6years old,7 years old-17 years old were only Less than 1.5%,18-year-old,41-65-year-old and 65-year-old three-stage pre-hospital cardiovascular and cerebrovascular occupation,and with the increase of age,the incidence of pre-hospital cardiovascular and cerebrovascular disease increased.The results of single factor analysis showed that the climatic factors average wind speed,average temperature,daily maximum temperature,daily minimum temperature,average site pressure,daily maximum station pressure,daily minimum station pressure,and minimum relative humidity were eight variables before the hospital.Sensitivity climatic factors for the number of vascular diseases,the number of cardiovascular diseases in 18～40 years old is not related to climate,and there are correlations between climate age sensitivity factors at ages of 41～65 years and over 65 years old,65 years of age or older.The overall correlation coefficient was higher than 41-65 years old;and the prevalence of male heart and brain vascular incidence and climate correlation coefficient were higher than female.Multivariate analysis showed:(1)Men aged 41～65: the average wind speed increased by 1 m/s,the average percentage of increase was 2.48%;the average temperature increased by 1℃,the daily average percentage increased by-1.93%;After an increase of 1h Pa,the mean percentage increase of cardiovascular and cerebrovascular diseases before the hospital was1.35%;the minimum relative humidity increased by 1%,and the daily average percentage increased by-0.24%.(2)For women aged 41～65: the average annual wind speed increases by 1 m/s,and the daily average percentage increases by 3.46%;the average daily temperature increases by 1℃,the daily increase percentage averages-2.94%;the daily maximum air pressure increases by 1 h Pa,the daily increase Percentage average-0.22%;minimum relative humidity increased by 1%,daily increase percentage average-0.02%.(3)Men over 65 years old: For every 1m/s increase in average wind speed,the average percentage increase of cardiovascular and cerebrovascular diseases before the hospital is-1.48%;for every 1 ℃ increase in average temperature,the average daily increase percentage is-1.97%;For every 1h Pa increase in air pressure,the daily average percentage increase is 1.78%;the minimum relative humidity is increased by 1%,and the mean percentage increase of cardiovascular and cerebrovascular diseases before the hospital is-0.07%.(4)For women over 65 years of age: for every 1m/s increase in average wind speed,the average daily increase percentage is 3.28%;for every 1 ℃ increase in average temperature,the average daily increase percentage is-3.59%;for the daily maximum pressure increase of 1h Pa,the daily increased average value of the percentage is0.42%;the minimum relative humidity is increased by 1%,and the average percentage of daily increase is-0.13%.Conclusion: The climatic factors mean wind speed,average temperature,daily maximum temperature,daily minimum temperature,average site pressure,daily maximum station pressure,daily minimum station pressure,and minimum relative humidity are the variables of pre-hospital cardiovascular and cerebrovascular diseases.Sensitivity climatic factors,average wind speed,minimum relative humidity,climatic factors,no population distribution characteristics,average temperature,daily maximum pressure,age,sex distribution,high regularity,positive correlation with air pressure,negative temperature correlation,The female population at the age of 41-65 and over 65 years old is more sensitive to average temperature,and the male population is more sensitive to air pressure. |
