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Ted S Tweed

Publications and source records attributed to Ted S Tweed.

6 recordsLinked to original sources
PubMed2005

Five-year changes in middle ear function for older adults.

Longitudinal changes in tympanometric measures of middle ear function over five years were reported for a large population of older adults. Findings were similar for men and women, for right and left ears, and across age groups from 48 to 92 years. Although some of the mean changes reached statistical significance, the vast majority of observed changes were small in magnitude relative to the observed variability and the tolerances of the measuring instrument. Observed mean changes in Peak Ytm for older adults were quite small and were in the positive direction. This is counter to changes that would be predicted on the basis of increases in the stiffness of the middle ear transmission system with advancing age suggested in earlier reports. Overall, the findings suggest little in the way of functional change in middle ear mechanics over a span of five years in older adults.

Acoustic Impedance Tests↗
PubMed2004

Serum cotinine level and incident hearing loss: a case-control study.

BACKGROUND: A growing body of literature suggests an association between cigarette smoking and hearing loss. OBJECTIVE: To assess the relation between levels of serum cotinine, a biomarker of exposure to tobacco smoke, and incident hearing loss. DESIGN: A cross-sectional, incident, case-control study of participants selected from a population-based cohort. SETTING: Testing was conducted at the Beaver Dam Community Hospital, Beaver Dam, Wis. PARTICIPANTS: A total of 197 participants with incident hearing loss and 394 control participants, aged 53 to 75 years, selected from the 2800 participants of the 5-year follow-up examination of the population-based Epidemiology of Hearing Loss Study, 1998-2000. MAIN OUTCOME MEASURE: Incident hearing loss. The incidence of hearing loss was defined as a pure-tone average of thresholds at 500, 1000, 2000, and 4000 Hz greater than 25-dB hearing level in either ear at follow-up among those without hearing loss at baseline. RESULTS: No significant associations were found between serum cotinine levels and incident hearing loss. CONCLUSIONS: These results were not consistent with a previous report, which found cross-sectional associations between prevalent hearing loss and current smoking and environmental tobacco smoke exposure in the home. Longer-term longitudinal studies of smoking and/or serum cotinine levels and the subsequent development of hearing loss may help clarify these associations.

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PubMed2003

The 5-year incidence and progression of hearing loss: the epidemiology of hearing loss study.

CONTEXT: Hearing impairment affects many older adults, but the incidence is unknown. OBJECTIVE: To determine the 5-year incidence and progression of hearing impairment. DESIGN: A longitudinal, population-based study of adults aged 48 to 92 years at baseline examination. Hearing sensitivity was measured twice, 5 years apart. SETTING: Testing was conducted at the Beaver Dam Community Hospital, Beaver Dam, Wis. PARTICIPANTS: A total of 1636 participants without hearing loss and 1085 participants with hearing loss at the baseline examination in 1993-1995 were reexamined in 1998-2000. MAIN OUTCOME MEASURES: The examinations included otoscopy, screening tympanometry, and tone air- and bone-conduction audiometry. Incidence of hearing impairment was defined as a pure-tone average (PTA) of thresholds at 500, 1000, 2000, and 4000 Hz (PTA 0.5, 1, 2, and 4 kHz) greater than 25 dB HL (hearing level) in either ear at follow-up among those without hearing loss at baseline. Progression was defined as a change of more than 5 dB in the PTA 0.5, 1, 2, and 4 kHz among those with hearing loss at baseline. RESULTS: The 5-year incidence of hearing impairment was 21%. More than half of those with hearing loss at baseline experienced a decline in hearing. Age was an important risk factor for both incidence and progression. Male sex, occupation, and education were associated with the incidence of hearing loss after adjusting for age. CONCLUSIONS: Older adults have a high risk of developing hearing loss. Among those with hearing loss, most experience further declines in hearing sensitivity over time. These data indicate that hearing impairment is an important public health problem and underscore the need for appropriate hearing screening and treatment.

Acoustic Impedance Tests↗
PubMed2002

Prevalence and 5-year incidence of tinnitus among older adults: the epidemiology of hearing loss study.

Tinnitus (ringing or buzzing in the ear or head) can range from barely noticeable to debilitating. Although a few studies have estimated the prevalence of this condition in adult populations, we know of no population-based estimates of incidence. As part of a population-based study of hearing loss in adults aged 48 to 92 years at baseline in Beaver Dam, Wisconsin, self-reported data on tinnitus were obtained at the baseline examination (1993-1995; N = 3753) and again 5 years later (1998-2000; N = 2800). A person was classified as having tinnitus if their tinnitus was at least moderate in severity or caused difficulty in falling asleep. The prevalence of tinnitus at baseline was 8.2 percent. The 5-year incidence of tinnitus among the 2513 participants at risk was 5.7 percent. Risk factors for prevalent and incident tinnitus were evaluated. The results suggest that tinnitus is a common problem for older adults and is associated with some modifiable risk factors.

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