| Objectives:To understand the current occupational injury situations of One Province's medical insurance units, enterprises and institutions and analyze the risk factors of occupational injuries, to provide a scientific basis for occupational injury reduction and security management, as well as to provide a decision-making basis for the occupational injury prevention and control departments to intervene in industrials and departments which have a high incidence of occupational injuries, also to provide rate adjustment references for the occupational injury insurance department.Methods:The data was from the occupational injury management system of that Province's Medical Insurance Bureau of those people who participated in occupational insurance from June,2004 to July,2010, performing an analysis of the basic information on each unit and the recorded occupational injury workers'demographic data with SPSS 13.0 and Exce12007.Results:1) Regional and industrial distributions of insurance units:These units which included over 14 cities of the Province, region 1 has the maximal number of insurance units and the units that accidents occurs; region 4, region 6, region 9 and region 12 account for a larger proportion of injured workers; The first class of risk industry has the largest number of insurance constitutions, the second class has the largest number of insurance applicants, the third class has the largest number of injured workers; injured workers are majorly concentrated in coal mining and washing industries and nonferrous metals mining and dressing industries.2) Demographic characteristics of the insured workers:The total number of insurance applicants in Hunan Occupational Injury Administration is 529,699 units, of which 347,634 are male (65.63%), 186 025 are female (34.37%),8761 injured workers are male (94.05%), 554 are females (5.95%),14 are dead (0.15%),1067 are seriously injured (11.45%),8234 are lightly injured (88.40%). The difference between sexual incidence of injured workers is statistically significant (P< 0.001), the incidence of male workers is higher than female workers. The average age of injured workers is 42.39±7.36, correspondingly the average length of service when the accident occurred is11.52±10.96 years. Among the injured workers,31 to 40 age group takes up the largest proportion, the next is the 41 to 50 group. Injured workers are majorly the people whose lengths of service are less than 3 years, however, the least are the people who have more than 31 working years.3) Time distributions of accidents:There were fewer injured workers from 2004 to 2006; but from 2007 onwards, the number of recorded workers was increasing year by year, showing an annual increase. June and July constituted the highest ratio to Monthly distribution of the number of injured workers. Tuesday and Wednesday take up a higher constituent ratio in weekly distribution, while Saturday and Sunday constitute a relatively lower ratio.4) Distributions of accidents'characters, unsafe behaviors and accidents'causes:Among the injured workers, the number of industrial accidents is the highest, accounting for 83.91%, and the next are pneumoconiosis and occupational diseases, working face, machinery, coals and other materials are the main causes of the incidents. Operational errors, safety neglects and other reasons that account for accidents have a relatively higher proportion among unsafe behaviors (41.80%), in addition, distraction is an important factor in the accident, too.5) Distributions of injured workers'diseases:After making a rough statistical analysis of the diagnoses of injured workers, we can see that fractures, soft tissue (squeeze, trauma) injuries take a great proportion, are 34.89% and 23.50% separately. The patient number of pneumoconiosis (silicosis) and occupational poisoning is also great.6) Burdens of occupational diseases:The incidence of non-fatal injuries is 175.8/10000, rate of serious injury is2.04‰, mortality rate of occupational injury is 2.64/100000, the standard years of life lost are 631.66 years, the annual PYLL was 1192.49 person-year/100 million, WLL is 313 years, annual WLL is 590.90 person-year/100 million.7) Effect factors of the degrees of injured workers:gender and age are effect factors of injury degrees, men usually suffer more serious injuries than women; seriously injured age group is the group equal or less than 31 years old, while people older than 30 years old have less possibility of serious injuries; lower-paid workers suffer serious injuries much more easily compared to higher-paid workers.8) Analyses of relationships among injured workers'diseases, noxious substances and occupations:Occupational poisoning are mostly distributed in nonferrous metals mining and dressing industries. Pneumoconiosis (silicosis) are mostly distributed in nonferrous metals mining and dressing industries and coal mining and washing industries; soft tissue (squeeze, trauma) injuries, open skin and muscle traumas, eye injuries, fractures are mostly distributed in the coal mining and washing industries; skin burning (scald) injuries are mostly distributed in smelting and pressing of ferrous metals industries. The mainly injurious substances in coal mining and washing industries are machinery, electrical equipments and metal parts, etc. nonferrous metals mining and dressing industries'mainly injurious substances are working face.Conclusions:Works aged in 31-50 have a high-incidence of occupational injuries. Region 4, region 6, region 9 and region 12 account for a larger proportion of injured workers. Mining, metallurgy and forging are the High-risk sectors of occupational injury. Tuesday, July is the fastigium of non-fatal injuries. Gender, age and wage levels are influencing factors of occupational injury. The injuries type that someone received is closely related with the kind of industry he engaged in.
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