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Sex-specific age threshold for increased risk of retinal vein occlusion in Koreans.
Thrombosis Research 2018 May 18
PURPOSE: Retinal vein occlusion (RVO) is one of most common retinal vascular disorders. It can lead to visual impairment and subsequent socioeconomic loss among the working population. RVO peak incidence is known to occur in the fifth and sixth decades of life, and is more predominant in males. To date, there has been no consensus regarding the optimal screening age for individuals at high risk for RVO, or whether sex-dependent cut-offs may be appropriate. Therefore, the purpose of this study was to predict the sex-specific age threshold for increased risk of RVO in Koreans.
METHODS: The analysis was based on data from the Korean National Health Insurance Database from 2013. Patients diagnosed with new cases of RVO from January 2013 to December 2013 were included. Individuals younger than 20 years of age and those with other retinal diseases were excluded. Multivariate logistic regression analysis and odds ratios with 95% confidence intervals were conducted to identify the age-related risk factors for RVO. A receiver operating characteristic (ROC) curve for RVO incidence was constructed.
RESULTS: Among the 754,749 individuals included in the study, 623 (0.08%) developed RVO. The optimal cut-off age for increased risk of RVO was 54 years overall, (sensitivity 0.78, specificity 0.70), 48 years in males (sensitivity 0.90, specificity 0.58), and 54 years in females (sensitivity 0.80, specificity 0.68). The incidence of RVO in females over 50 years of age was 3 times higher than that in females under the age of 50 after adjusting for confounding factors, and these differences tended to increase with age. The area under the ROC curve was 0.80 (95% CI; 0.79-0.82) overall, 0.81 (95% CI; 0.79-0.83) in males, and 0.79 (95% CI; 0.78-0.81) in females.
CONCLUSION: RVO incidence was higher in females, and increased more rapidly with age. The incidence of RVO more than doubled after 50 years of age for both sexes after adjusting for confounding factors. Females had an older age cut-off for RVO than males. However, the clinical impact of the use of sex-specific age cut-offs for RVO would benefit from additional validation from further studies.
METHODS: The analysis was based on data from the Korean National Health Insurance Database from 2013. Patients diagnosed with new cases of RVO from January 2013 to December 2013 were included. Individuals younger than 20 years of age and those with other retinal diseases were excluded. Multivariate logistic regression analysis and odds ratios with 95% confidence intervals were conducted to identify the age-related risk factors for RVO. A receiver operating characteristic (ROC) curve for RVO incidence was constructed.
RESULTS: Among the 754,749 individuals included in the study, 623 (0.08%) developed RVO. The optimal cut-off age for increased risk of RVO was 54 years overall, (sensitivity 0.78, specificity 0.70), 48 years in males (sensitivity 0.90, specificity 0.58), and 54 years in females (sensitivity 0.80, specificity 0.68). The incidence of RVO in females over 50 years of age was 3 times higher than that in females under the age of 50 after adjusting for confounding factors, and these differences tended to increase with age. The area under the ROC curve was 0.80 (95% CI; 0.79-0.82) overall, 0.81 (95% CI; 0.79-0.83) in males, and 0.79 (95% CI; 0.78-0.81) in females.
CONCLUSION: RVO incidence was higher in females, and increased more rapidly with age. The incidence of RVO more than doubled after 50 years of age for both sexes after adjusting for confounding factors. Females had an older age cut-off for RVO than males. However, the clinical impact of the use of sex-specific age cut-offs for RVO would benefit from additional validation from further studies.
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