Study On Burden Of Disease Attribute To High Temperatures Of Hypertension In Steel Workers

Objectives To explore the extent of hazard exposed to high temperature in workenvironment, we made an analysis of the burden of disease of hypertension in Steelworkers so that we can provide a scientific basis for prevention and control strategy ofhypertension in workers exposed to high temperature.Methods A steel occupational health examination center as well as its affiliatedhospital was selected as the study field.1569workers who were above1year of worktime length and participated in occupational health examination in a steel factory wereselected as subjects, and filled in the questionnaires self-designed and face to faceinvestigation was performed. The survey contents included their baseline charateristics,occupational history, lifestyle and quality of life as well as economic burden of disease ofhypertention patients in steel workers. The prevalence of hypertension between steelworkers exposed to high temperature and those non exposed to high temperature in workenvironment was tested using Chi-squared test. The relationship between hightemperature and the economic burden of patients with hypertension was analized by twoindependent samples non-parametric tests.Multivariate analysis by Logisticregression.Quality of life score uesed mean with standard deviation, Score of the twogroups were evalutated using Student’s t test. Analysis of covariance was performed toanalyze mean score of each dimension, comparing those people exposed to hightemperature and non exposed to high temperature, adjusting for the possible confoundingeffects of age, sex, marital status, education level, economic status, health care approach,seniority, smoking, alcohol consumption, physical exercise, and noise.Results11569Steel workers were surveyed in this study, exclusion of59with non-eligible questionnaire left1510eligible steel workers as a final study sample, and theeligible rate of questionnaire was96.2%. those steel workers were93.8%male(1417/1510) more than that of female. Their mean age was (40.0±8.2) years old (agerange:20-60years old),80.7%30~50age group workers was more than that of otherage groups. The average length of service was (17.5±6.3) years, range from1to41year.72.3%workers were Middle school, high school (secondary) education level (1092/1510)as well as94.6%(1482/1510) workers were married in the final sample.271.5%(1079/1510) workers those who were exposed to high temperature was higher than28.5%(431/1510) workers those who were not exposed to high temperature. There was nosignificance difference of age and sex between those workers exposed to high temperatureand those workers non exposed to high temperature (P>0.05). The prevalence rate of hypertension was31.7%(479/1510), and the prevalence of hypertension with hotexposure steel workers was35.6%, was higher than that of those without hotexposure(22.0%)(P<0.05). The prevalence of hypertension was able to be explained13.6%attribute to the high temperature exposure. The treatment rate, the control rate, thehospitalization rate of and the purchase medicine rate of hypertension patients was33.6%,42.4%，4.4%and64.9%respectively. Among those without treatment,47.2%(150/318)bought medicine from the pharmarcy store.3The economic burden of disease was￥2359.3per capita, the average annual household income was￥68716.9, and the averageannual household consumption expenditure was￥39615.2,3.4%of total householdincome and6.0%of annual household expenditure used as economic burden of disease.4The score of quality of life of workers with hypertension was62.1points,45.1points and107.2points lower than that of non-normal blood level workers in the physical domain(PCS), psychological domain (MCS) and total scores respectively.5The direct economicburden, indirect economic burden and the total economic burden of steel workers withhypertension attributable to high temperature exposurewas￥194129.1,￥144472.6and￥338601.8.6The score of loss of quality of life in patients with hypertension attributableto high temperature exposure in the physical domain (PCS), psychological domain (MCS)and the total score were1.6points,1.0points and2.6points respectively.Conclusions1The prevalence of hypertension of Steelworkers is31.7%, the hightemperature exposure can explain13.6%the prevalence of hypertension.2Economicburden and intangible burden of disease of hypertension in steel workers is￥338601.8and2.6points attributable to high temperature exposure.