Abstract: Objective To evaluate the influence of pulmonary tuberculosis on the grade-uplifting rate, average uplifting time and the death rate of silicosis complicated with pulmonary tuberculosis. Methods Data of 315 cases of silicosis diagnosed by the Yibin Occapational Disease Department from 1973～1998 were studied、 analyzed and summed up. Results The grade-uplifting rate of Ⅰ is 32.1%, while that of Ⅰ+T is 56.3%(P<0.01); the average grade-uplifting time of Ⅰ is 5.8Y, while that of Ⅰ+T is 4.3Y (P<0.05); the death rate of Ⅰ is 27.5%, While that of Ⅰ+T is 66.7%(P<0.01); the grade-uplifting rate of Ⅱ is 19.6%, while that of Ⅱ+T is 41.2%(P<0.01); the average grade-uplifting time of Ⅱ is 4.9Y,while that of Ⅱ+T is 3.4Y( P<0.05);the death rate of Ⅱ is 51.1%, while that of Ⅱ+T is 54.6%(P>0.05). Conclusion All this shows that silicosis complicated with pulmonary tuberculosis increases the grade-uplifting rate, shortens the averge grade-uplifting time and increases the death rate.

Key words: Tuberculosis,pulmonary/mortality, Silicosis, Grade-uplifting rate