Nghiên cứu đặc điểm điếc nghề nghiệp ở công nhân đóng tàu Hạ Long năm 2010

Study on occupational deafness of 751 workers in Ha Long Ship factory. The deafness clarified by Fowler and Sabine methods. The result shows that, general deafness is 4.7 percent and most are initial deafness 82.9 and several 22.9 percent and full deafness 8.6 percent. The group workers had deafness highest in glossary sand spray (60.0 percent) metal cutting (25.7 percent). Among the occupational deafness is the group of occupational working ages more than 10 year old is 82.9 percent and less than 10 years is 21.1 percent with P 0.01.