Jonathan E Sorrel1, Charles E Bishop1, Christopher Spankovich1, Dan Su2, Karen Valle2, Samantha Seals3, John M Schweinfurth1. 1. Department of Otolaryngology and Communicative Sciences, University of Mississippi Medical Center, Jackson, Mississippi, U.S.A. 2. Department of Data Science, University of Mississippi Medical Center, Jackson, Mississippi, U.S.A. 3. Department of Mathematics and Statistics, University of West Florida, Pensacola, Florida, U.S.A.
Abstract
OBJECTIVES/HYPOTHESIS: To evaluate the relationships among measures of stroke risk and hearing in an African American cardiovascular study cohort. STUDY DESIGN: Prospective cohort study. METHODS: The relationships between stroke risk profiles and hearing of 1,107 individuals from a cohort of African Americans were assessed. Several different hearing pure-tone averages (PTAs) were constructed representing different frequency regions of hearing, namely PTA low, PTA mid, and PTA high. Stroke risk profiles were calculated using validated 10-year cardiovascular disease risk scores. Gamma regression analyses were performed for each PTA given as a continuous variable with change in stroke risk score. Logistic regression analyses, presented as odds ratios, were performed with hearing loss defined as any PTA >25 dB hearing level. Stratification models were analyzed for age quarterlies and among sex. RESULTS: Single unit increases of stroke risk percentage were found to be predictive of increases in all PTA threshold levels in gamma regression analyses for the overall pooled sample. The relationship was influenced by age, where fewer significant relationships were observed at higher ages. When analyzed with respect to stroke risk categories, using low risk as the reference group, there was found to be a significant association between stroke risk and hearing loss in the medium- and high-risk groups, with a stronger relationship in the high-risk group for all PTA threshold levels. CONCLUSIONS: This study provides evidence that stroke risk has a positive predictive relationship with hearing pure-tone threshold. LEVEL OF EVIDENCE: 2b. Laryngoscope, 128:1438-1444, 2018.
OBJECTIVES/HYPOTHESIS: To evaluate the relationships among measures of stroke risk and hearing in an African American cardiovascular study cohort. STUDY DESIGN: Prospective cohort study. METHODS: The relationships between stroke risk profiles and hearing of 1,107 individuals from a cohort of African Americans were assessed. Several different hearing pure-tone averages (PTAs) were constructed representing different frequency regions of hearing, namely PTA low, PTA mid, and PTA high. Stroke risk profiles were calculated using validated 10-year cardiovascular disease risk scores. Gamma regression analyses were performed for each PTA given as a continuous variable with change in stroke risk score. Logistic regression analyses, presented as odds ratios, were performed with hearing loss defined as any PTA >25 dB hearing level. Stratification models were analyzed for age quarterlies and among sex. RESULTS: Single unit increases of stroke risk percentage were found to be predictive of increases in all PTA threshold levels in gamma regression analyses for the overall pooled sample. The relationship was influenced by age, where fewer significant relationships were observed at higher ages. When analyzed with respect to stroke risk categories, using low risk as the reference group, there was found to be a significant association between stroke risk and hearing loss in the medium- and high-risk groups, with a stronger relationship in the high-risk group for all PTA threshold levels. CONCLUSIONS: This study provides evidence that stroke risk has a positive predictive relationship with hearing pure-tone threshold. LEVEL OF EVIDENCE: 2b. Laryngoscope, 128:1438-1444, 2018.
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