摘要
重庆市中区８个交通路段等效连续声级为７０．５～７５．７ＬｅｑｄＢ（Ａ）。２１９名交通警察和１０２人的对照组听力曲线特征为：高频段听力曲线呈Ｖ或Ｕ型凹陷型，交警组明显多于对照组（ｐ＜０．０１）。高频段呈倾斜型下降两组无差别。双耳听力曲线呈对称性分布、对照组多于交警组（Ｐ＜０．０５）。高频段和语言段听力损伤，交警组明显多于对照组（Ｐ＜０．０１）。
he levels of
road traffic noise were measured in eight main streets of Chongqing city andthe equivalent
sound levels were found to be 70. 5-75. 5 LeqdB(A). An exposed group of 219traffic policemen
and 102 conntrol subjects, were audiometrically examined.The results showed that the
distribution of the audiocurve of both ears appeared to be sym- metric and the V- and U- shape
valleys were found at high frequency band among the exposedgroup, which differed remarkably
from the controls(P < 0. 01).Meanwhile the prevalence ofhearing loss at high fenquency and
speech frequency among the traffic policemen was significantly higher than that of the
controls(P<0. 05).
出处
《职业卫生与病伤》
北大核心
1995年第1期11-13,共3页
Occupational Health and Damage
关键词
交通警察
交通噪声
听力曲线
pattern of aud10-gramtraffic policemen hearing loss
