The Age Variation of Hearing among Chinese Farmers

中国农民听力的年龄差异

基本信息

批准号：
07045055
负责人：
MIYASHITA Kazuhisa
金额：
$ 1.86万
依托单位：
Wakayama Medical University
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07045055/
关键词：
hearing acuity age-related change hearing level upper limit of hearing normal aging curve difference rural Chinese urban Chinese 地域間隔差

项目摘要

To clarify the effects of environmental noise on the age-related changes in hearing, the joint research between Wakayama Medical University in Japan and Shandong Medical University in China was conducted. The subjects were 1064 male and 1273 female Chinese who were occupationally unexposed to noise ranging in age from 5 to 83 years. Audiometric threshold testing was performed at the audiometric frequencies of 0.5,1,2,4 and 8 kHz. The upper limit of hearing was also measured. The ears of subjects with no evidence of hearing impairment were selected to analyze the hearing level and the upper limit of hearing. The subjects finally accepted comprised 1604 male and 2223 female normal ears. Normal aging curves of hearing level at each frequency and upper limit of hearing were established by calculating the 25th, 50th and 75th percentiles for each age group. The hearing level gradually increased with age and rapidly over 50 years. Deterioration of the upper limit of hearing was observed from early childhood and slight between age 25 and 49 but at ages over 50 it was accelerated. The age-related changes in hearing of Chinese were compared with those of Japanese normal group. Those of Chinese were slower than those of Japanese. When the age-related changes in hearing of urban Chinese were compared with those of rural Chinese. Those of urban Chinese were faster than those of rural Chinese. These differences may be the effects of environmental noise. In this study, 370 subjects (16% subjects) were excluded from the normal groups because of hearing impairment, 223 of them showed sensory hearing loss. Logistic regression analysis was used to analyze the items related to hearing impairment. Odds ratio of otitis media was the highest. This might come from the effect of aminoglycoside antibiotics commonly used to treat otitis media.

为了阐明环境噪声对年龄相关的听力变化的影响，日本的Wakayama医科大学与中国山东医科大学之间的联合研究。受试者是1064名男性和1273名女性中国人，她们在5至83岁之间的噪音中占领。听力阈值测试以0.5,1,2,4和8 kHz的听力频率进行。还测量了听力的上限。没有选择听力障碍的受试者耳朵来分析听力水平和听力上限。最终，受试者接受了1604名男性和2223名女性正常耳朵。通过计算每个年龄段的第25％，第50和75个百分位数来确定听力水平的正常老化曲线和听力上限。听力水平随着年龄的增长而逐渐增加，并在50年内迅速增加。从小就观察到听力上限的恶化，并且在25至49岁之间轻微，但在50岁以上的年龄在50岁以上。将与年龄相关的中文听力变化与日本正常人组的变化进行了比较。中国人比日本人慢。将与年龄相关的城市中国人听力变化与农村中国人的听力变化。城市中国人的速度比中国农村地区的速度快。这些差异可能是环境噪声的影响。在这项研究中，由于听力障碍，将370名受试者（16％受试者）排除在正常组之外，其中223名受试者表现出感觉听力损失。逻辑回归分析用于分析与听力障碍有关的项目。中耳炎的优势比最高。这可能来自通常用于治疗中耳炎的氨基糖苷抗生素的作用。