ArticleFrontiers in neurology
Association of residential altitude with pure-tone hearing thresholds in plateau residents aged ≤50 years: a cross-sectional study.
Article in Frontiers in neurology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Residential altitude has been proposed as a potential determinant of auditory function, but evidence from long-term high-altitude residents remains limited. Methods: This cross-sectional study included 187 plateau residents aged ≤50 years undergoing health examination at the Affiliated Hospital of Qinghai University. Participants were classified into lower- (2,200-2,499 m, Results: Unadjusted analyses showed more pronounced between-group differences at higher frequencies, with statistically significant differences for HF-PTA, PTA at 4 kHz, PTA at 8 kHz, and LM-PTA. Continuous-altitude models did not support a stable linear trend. In the fully adjusted model, altitude-stratified effects were no longer statistically significant for HF-PTA, PTA at 4 kHz, or LM-PTA, but remained statistically significant for PTA at 8 kHz ( Discussion: Hearing-threshold differences across residential altitude strata were more apparent at higher frequencies in unadjusted analyses; after adjustment for age, sex, and other clinical factors, the most robust independent altitude-stratified association remained at 8 kHz.
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