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KMID : 1207720220140030344
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Clinics in Orthopedic Surgery
2022 Volume.14 No. 3 p.344 ~ p.351
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Nested Case Control Study on the Risk of Suicide Death in Elderly Patients with Pelvic Fractures Using a Nationwide Cohort
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Jang Suk-Yong
Cha Yong-Han
Kim Kap-Jung
Kim Ha-Yong
Choy Won-Sik
Koo Kyung-Hoi
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Abstract
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Background: The aim of this study was to investigate the incidence rate of suicide deaths in elderly patients with pelvic fractures using a nationwide database and to analyze change in the risk of suicide death overtime after pelvic fractures compared to controls.
Methods: We used the National Health Insurance Service-Senior cohort (NHIS-Senior) of South Korea. Cases and controls were matched for sex, age, history of hospital admission within 1 year, and presence of depression on the date of suicide death. Controls were collected by random selection at a 1 : 5 ratio from patients at risk of becoming cases when suicide cases were collected. Incident pelvic fractures were identified from the NHIS-Senior as follows: first admission during the observational period (2002?2015) to an acute care hospital with a diagnostic code of International Statistical Classification of Diseases and Related Health Problems, 10th revision S321, S322, S323, S324, S325, or S328 and age 65?99 years. Conditional logistic regression analysis was performed to evaluate the association between pelvic fractures and the risk of suicide death.
Results: A total of 2,863 suicide cases and 14,315 controls were identified. Suicide case patients had been more frequently exposed to steroids (odds ratio [OR], 1.32; 95% confidence interval [CI], 1.21?1.45), benzodiazepines (OR, 1.76; 95% CI, 1.61?1.93), and non-steroidal anti-inflammatory drugs (OR, 1.18; 95% CI, 1.07?1.29). Pelvic fractures within 1 year from the date of suicide death were statistically significantly associated with increased risk of suicide (adjusted OR [AOR], 2.65; 95% CI, 1.29?5.45; p = 0.008) compared to controls. The risk of suicide death declined as the incidence date of pelvic fracture was more remote from the date of suicide death: AORs of 2.59 (95% CI, 1.33?5.04; p = 0.005) within 2 years and 2.13 (95% CI, 1.15?3.95; p = 0.017) within 3 years. However, there was no statistical significance in the increased risk of suicide death for pelvic fractures that had occurred ≥ 4 years ago (p > 0.05).
Conclusions: Pelvic fractures in the elderly population increased the risk of suicide death within 3 years, suggesting the need for psychiatric support among elderly patients with pelvic fractures.
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KEYWORD
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Pelvic fracture, Elderly, Suicide death
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