Incidence of Adnexal Torsion in the Republic of Korea: A Nationwide Serial Cross-Sectional Study (2009-2018).

Jin-Sung Yuk,Myung-Hwa Lee,Seung-Woo Yang,Min-Sun Kyung

doi:10.3390/jpm11080743

Abstract

Background: This study aimed to evaluate the incidence and risk factors of adnexal torsion (AT) in the Korean population from 2009 to 2018 (10 years). Methods: We analyzed the 2009−2018 data obtained from the Health Insurance Review and Assessment Service National Inpatient Sample (HIRA-NIS) database. AT was identified by both diagnosis codes and surgery codes of adnexal surgery. Results: A total of 6,262,910 women were recorded in the database. The incidence of AT was 6 per 100,000 women (95% confidence interval (CI), 6−6). The incidence of AT tended to decrease with age after peaking in the late 20s to early 30s. In the weighted logistic regression analysis, women of childbearing age, especially in their 20s and 30s, had the highest AT incidence. Corpus luteal cyst (p < 0.001) and benign neoplasm (p < 0.001) increased the incidence of AT. Low socioeconomic status (SES), Charlson comorbidity index (CCI), and pregnancy were unrelated to AT. Conclusion: The incidence of AT is 6 per 100,000 women and peaks in the 20s to early 30s.

Highlights

According to the National Health Insurance Act, all medical institutions must treat patients covered by the National Health Insurance; they charge a portion of the treatment cost to the National Health Insurance Corporation
In the weighted logistic regression analysis of Model 2, the corpus luteal cyst and benign neoplasm of the ovary increased the risk of developing adnexal torsion (AT) (Figure 4, Table 3)
AT commonly occurs at the childbearing age, especially in the 20s to 30s

Summary

Introduction

Most of the previous studies on AT incidence rates have been based on data in a single-center patient population [7,8]. A study on the incidence of AT using National Health Insurance data has been previously reported in Korea; this investigation had limitations such as a small sample size and a short-term period of patient study, making it difficult to observe changes over time [8]. It did not identify the associated risk factors

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Discussion

Conclusion