Publications by authors named "Jeong Ho Yang"
Article Synopsis
- The study evaluated how COVID-19 distancing measures affected cancer diagnostic activities, specifically gastrointestinal endoscopy (GIE), by comparing data from 2020-2022 with 2018-2019.
- Using data from the Korean Health Insurance Review and Assessment Services, it found a drop in age-standardized rates for colonoscopy and endoscopic gastroduodenoscopy (EGD) in 2020, but a subsequent rise in 2021-2022, with some exceptions for EGD in lower-income populations.
- The results highlighted socioeconomic inequalities in the recovery rates of GIE and emphasized the importance of implementing equity-focused strategies to improve healthcare access across different social groups post-pandemic
Article Synopsis
- This study examined how different obesity-related measurements relate to mortality among middle-aged and elderly people, comparing their effectiveness to the body mass index (BMI).
- It involved analyzing data from nearly 20,000 participants over an average follow-up of 13.5 years, using various body measurements like waist and hip circumference.
- The findings indicated that while alternative obesity indices improved mortality prediction compared to traditional methods, their effectiveness was not significantly better than that of the BMI model.
Objectives: We evaluated whether the coronavirus disease 2019 (COVID-19) pandemic caused delays in the diagnosis and treatment of colorectal cancer (CRC) in Korea, where there have been no regional or hospital lockdowns during the pandemic period.
Methods: Data on CRC patients (n=1,445) diagnosed in Gwangju Metropolitan City and Jeonnam Province between January 2019 and December 2021 were assessed. The stage at the time of CRC diagnosis, route to diagnosis, time to initial cancer treatment, and length of hospital admission were compared before and during the COVID-19 pandemic.
An artificial blood vessel with a tubular structure was additively manufactured via fused deposition modeling (FDM) starting from a single strand of polyvinyl alcohol (PVA) filament coated with a specific thickness of biocompatible polydimethylsiloxane (PDMS), followed by removal of the inner core via hydrogen peroxide leaching under sonication. In particular, we examined the relationship between the extruded deposition diameter and the filament migration speed/nozzle control speed (referred to as the filament/nozzle transition ratio), which is almost independent of the extruded deposition flow rate due to the weak die-swelling and memory effects of the extruded PVA arising from its intrinsically low viscoelasticity. The chemical stability of the PDMS during sonication in the hydrogen peroxide solution was then determined by spectroscopic techniques.
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