AGE-CHANGES IN PURE-TONE HEARING THRESHOLDS IN A LONGITUDINAL-STUDY OF NORMAL HUMAN AGING
AGE-CHANGES IN PURE-TONE HEARING THRESHOLDS IN A LONGITUDINAL-STUDY OF NORMAL HUMAN AGING
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DOI：
10.1121/1.399731
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发表时间：
1990-08-01
影响因子：
2.4
通讯作者：
FOZARD, JL
中科院分区：
文献类型：
--
作者：
BRANT, LJ;FOZARD, JL
在1968年至1987年的20年间收集了813名成年男性（20-95岁）的纯音听力图，在0.125-8 kHz的11个频率下测量听阈。每个男性属于七个不同年龄组（20岁，30岁，...，80岁），根据初次观察的年龄。这些男性是巴尔的摩老龄化纵向研究（BLSA）[巴尔的摩，马里兰州，美国]的参与者，这是一项关于正常人类老龄化的多学科社区研究。在15年的随访期间，所有年龄组的听力阈值都发生了变化。例如，在0.5和8 kHz时，对于20岁的人，左耳和右耳的平均纵向损失分别为5.7-7.6和5.1-21.1 dB，50岁的人为10.0-12.7和35.2-53.0 dB，80岁的人为22.9-48.5和69.0-84.5 dB。与以前的横断面研究结果一样，70岁及以上男性的听力损失在最高频率下最大。这些老年男性的变化率在0.5-2 kHz的语音频率范围内比在更高的频率范围内更快，因为他们的听力在高频处已经减弱。
Hearing thresholds were obtained on 813 adult males (20-95 years) measured at 11 frequencies ranging from 0.125-8 kHz from pure-tone audiograms collected over a 20-year period from 1968 to 1987. Audiograms taken at two to six different ages spanning a maximum observation period of 15 years were obtained for each male belonging to one of seven different age groups (20,30,...,80 years) based on the age of initial observation. The males were participants in the Baltimore Longitudinal Study of Aging (BLSA) [Baltimore, Maryland, USA] a multidisciplinary community-based study of normal human aging. Changes in hearing thresholds occurred in all age groups during the 15-year follow-up period. For example, at 0.5 and 8 kHz for combined left and right ears there was an average longitudinal loss of 5.7-7.6 and 5.1-21.1 dB, respectively, for 20-year-olds, 10.0-12.7 and 35.2-53.0 dB for 50-year-olds, and 22.9-48.5 and 69.0-84.5 dB for 80-year-olds. As in results from previous cross-sectional studies, hearing loss in the males 70 years and older is greatest at the highest frequencies. The rate of change for these older males is faster in the speech-range frequencies 0.5-2 kHz than in the higher frequencies, since their hearing has already diminished at the high frequencies.