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Purpose: To develop and validate a nomogram for predicting the risk of tinnitus severity in patients with unilateral subjective tinnitus. Methods: The objective of this study was to establish and validate a nomogram specifically designed for patients with unilateral subjective tinnitus. We collected data on unilateral subjective tinnitus from the Air Force Medical Center, including 146 participants between January 2021 and June 2022. Risk factors for unilateral subjective tinnitus severity were evaluated by least absolute shrinkage and selection operator (LASSO) and binary logistic regression analysis. Internal verification was used to evaluate the performance of the nomogram. The discriminative ability was measured by the consistency index (C-indices) and the area under the curve (AUC) of the receiver operating characteristic (ROC) curves. Results: All included patients were randomized according to a 7:3 ratio into the training cohort (104 patients) and the validation cohort (42 patients). The LASSO regression model identified sex, tinnitus loudness, and hearing loss as candidate variables. Binary logistic regression analysis showed that gender (OR: 0.76; 95% CI: 0.6-0.95; P = 0.021) and tinnitus loudness (OR: 1.37; 95% CI: 1.09-1.72; P = 0.009) were significant predictors of unilateral subjective tinnitus severity, while age, tinnitus matching frequency, and tinnitus duration were not. The significant predictors were included in the nomogram. Hearing loss was included in the nomogram based on prior clinical experience and previous studies. The training and validation cohorts C-indexes were 0.707 (95% CI: 0.607-0.806) and 0.706 (95% CI: 0.548-0.863), respectively. The training and validation cohort’s AUC of the ROC curves were 0.692 and 0.705, respectively. Conclusion: We have developed and validated a nomogram based on gender, hearing loss, and tinnitus loudness, which can effectively predict the risk of tinnitus severity in patients with unilateral subjective tinnitus. The nomogram provides personalized prediction results for patients with unilateral subjective tinnitus, which is beneficial for clinical decision-making and treatment plan development.
Purpose: To develop and validate a nomogram for predicting the risk of tinnitus severity in patients with unilateral subjective tinnitus. Methods: The objective of this study was to establish and validate a nomogram specifically designed for patients with unilateral subjective tinnitus. We collected data on unilateral subjective tinnitus from the Air Force Medical Center, including 146 participants between January 2021 and June 2022. Risk factors for unilateral subjective tinnitus severity were evaluated by least absolute shrinkage and selection operator (LASSO) and binary logistic regression analysis. Internal verification was used to evaluate the performance of the nomogram. The discriminative ability was measured by the consistency index (C-indices) and the area under the curve (AUC) of the receiver operating characteristic (ROC) curves. Results: All included patients were randomized according to a 7:3 ratio into the training cohort (104 patients) and the validation cohort (42 patients). The LASSO regression model identified sex, tinnitus loudness, and hearing loss as candidate variables. Binary logistic regression analysis showed that gender (OR: 0.76; 95% CI: 0.6-0.95; P = 0.021) and tinnitus loudness (OR: 1.37; 95% CI: 1.09-1.72; P = 0.009) were significant predictors of unilateral subjective tinnitus severity, while age, tinnitus matching frequency, and tinnitus duration were not. The significant predictors were included in the nomogram. Hearing loss was included in the nomogram based on prior clinical experience and previous studies. The training and validation cohorts C-indexes were 0.707 (95% CI: 0.607-0.806) and 0.706 (95% CI: 0.548-0.863), respectively. The training and validation cohort’s AUC of the ROC curves were 0.692 and 0.705, respectively. Conclusion: We have developed and validated a nomogram based on gender, hearing loss, and tinnitus loudness, which can effectively predict the risk of tinnitus severity in patients with unilateral subjective tinnitus. The nomogram provides personalized prediction results for patients with unilateral subjective tinnitus, which is beneficial for clinical decision-making and treatment plan development.
Background The link between anxiety and tinnitus severity has garnered significant scholarly interest, with numerous studies identifying a positive correlation. Despite this, the genetic basis of this relationship remains underexplored. Leveraging publicly accessible GWAS data, this study employs Mendelian randomization to elucidate the genetic causality between anxiety and tinnitus severity. Methods This research analyzed single nucleotide polymorphisms (SNPs) related to anxiety and tinnitus severity from the UK Biobank, utilizing aggregated data from genome-wide association studies (GWAS). Instrumental variables linked to anxiety were meticulously selected. The study implemented several Mendelian randomization techniques, including “mr_ivw,” “mr_egger_regression,” “mr_weighted_median,” “mr_simple_mode,” and “mr_weighted_mode,” to assess the causal impact of anxiety on tinnitus risk through odds ratios (ORs). Sensitivity analyses, including MR-Egger and the leave-one-out method, were conducted to ensure result stability. The F-value was also calculated to ascertain the strength of the instrumental variables. Results Analysis identified five SNPs as instrumental variables. The calculated ORs and 95% confidence intervals from MR-Egger regression, weighted median, and inverse variance weighting showed no statistically significant causal relationship between anxiety and severe tinnitus, with all P-values exceeding 0.05. This lack of statistical significance, consistent across various methods, indicates no genetic causality between anxiety and tinnitus severity. Furthermore, no evidence of heterogeneity (P = 0.80) or horizontal pleiotropy (P = 0.31) was found, reinforcing the robustness of the instrumental variables (F > 10). Conclusion Our Mendelian randomization analysis reveals no genetic causality between anxiety and tinnitus severity, suggesting the need for further research into the multifaceted etiology of tinnitus.
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