Analysis The Charaeteristie Of The New Diagnosis Pneumoeoniosis Cases From2006to2010in Qinghai Province

Objective:To know the distribution status and occurrence regularity of pneumoconiosis disease from Qinghai province in2006-2010, and provide reference for the government to make and improve pneumoconiosis control measures.Method:According to the425cases diagnosed in Qinghai province and reported in China Information System for Disease Control and Prevention from January1,2006to December31,2010, cases data were analyzed on the epidemic characteristics such as the distribution in persons, places and time with the method of descriptive and inference statistics.Results:(1)Population distribution:total425pneumoconiosis cases were accumulative diagnosed in Qinghai province, in which the number of male patients were418(98.35%) and the female were7(1.65%), the average diagnostic age was (43.46±10.13)a, and the average exposure working age was (10.98±11.47)a. There were230(54.12%) migrant workers in every425pneumoconiosis cases, whose average diagnostic age was (39.43±8.49)a and average exposure working age was (2.02±2.07)a. It were lower than non-migrant workers with average diagnostic age(48.23±9.84)a and exposure working age(21.54±8.67)a (P<0.05).(2)Regional distribution: diagnosed pneumoconiosis cases were mainly distributed in Haidong, Xi’ning, Haixi and Haibei areas, the proportion of four areas were54.82%,33.88%.8.71%and2.59%respectively. The percent of migrant workers in Haidong area was91.85%.(3)Industrial distribution:The mainly concentrated industry were distributed in non-ferrous metal and metallurgy, coal, electrical power and other industries, which accounted for57.18%,7.06%,6.35%and30.35%, there were statistically significant different (χ2=649.91, P<0.05)in these industries except for electrical power and non-ferrous metal and metallurgy. Among them the percent of silicosis in non-ferrous metal and metallurgy was81.94%, the coal workers’penumoconiosis in coal industry was90.74%.(4)Types of work:The main types of job in which the penumoconiosis was diagnosed were the drilling and the blasting work, coal digger, smelting, casting and others, the proportion respectively were56.24%,7.06%,6.35%and30.35%. There were significant different (χ=383.22, P<0.05) except for smelting, casting and others. Among them the percent of silicosis in drilling and the blasting work was70.97%. coal workers’ penumoconiosis in coal digger was55.56%.(5)Disease category:the proportion of silicosis. pneumonoconiosis and others respectively were2.94%,12.70%and14.35%. The average diagnostic age of silicosis patients(41.25±9.23)a was lower than coal workers’ penumoconiosis patients(51.19±11.56)a and other diseases(47.90±8.29)a (F=33.428, P<0.05). the average exposure working age of silicosis patient(6.52±8.87)a was lower than coal workers’ penumoconiosis patients(23.22±9.24)a and other diseases(22.79±8.31)a(F=145.559, P<0.05).(6)Occupational health surveillance:The average occupational health surveillance rate of workers engaging in dusty environment from2006to2010was45.39%, The concentration monitoring qualified rate was49.86%on average in dust work post.Conclusion:(1)Silicosis was the primary type disease in the newly diagnosed pneumoconiosis cases in Qinghai province from2006to2010, whose average diagnostic age and exposure working age were lower than coal workers’penumoconiosis patients and other diseases patients.(2)Pneumoconiosis were mainly distribute in Haidong area and Xi’ning area, moreover non-ferrous metal, coal and electrical power were the high risk industries in pneumoconiosis.(3)The occurrence of pneumoconiosis disease was related to the type of job, Silicosis cases mainly came from the drilling and the blasting work, smelting and casting work, Coal digger was the high-risk groups of coal worker’s pneumoconiosis.(4)The status of pneumoconiosis disease in migrant workers was serious, also the pneumoconiosis characteristics were short work age. the average exposure age and diagnostic age were lower than non-migrant workers.(5) Because of the low occupational health surveillance coverage rate that maybe give rise to missed diagnosed and reduce the detection rate of pneumoconiosis.(6) The study determined the critical control points of pneumoconiosis disease in Qinghai province:the key areas, key industries, key types of work and key population, which have the certain reference value for Qinghai province to develop pneumoconiosis disease prevention and control.