Epidemiology and Health

Original Articles

Cardiovascular disease risk disparities between immigrants and native Koreans: a population-based study in Gwangju, Korea: Jung-Ho Yang, Yerin Choi, Ran Lee, Seong Eun Kim, Kyung-Hwa Park, Seong-Woo Choi, BongKyu Sun, Kyunghak Kim, Sun-Seog Kweon; Epidemiol Health. 2025;47:e2025067. Published online December 8, 2025; DOI: https://doi.org/10.4178/epih.e2025067

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Abstract Summary PDF Supplementary Material: Abstract
OBJECTIVES
Korea is becoming a multiethnic society, with immigrants comprising nearly 5% of the population. Evidence on cardiovascular disease (CVD) risk among immigrants remains limited.
METHODS
We conducted a population-based study of 582 immigrants in Gwangju and 2,328 age-matched and gender-matched native Koreans (2022-2023). Immigrant data were obtained from direct health assessments, while native Korean data were drawn from the Korea National Health and Nutrition Examination Survey. CVD risk was estimated using the Framingham risk score (FRS) and pooled cohort equations (PCE). Logistic regression was employed to compare the odds of elevated risk (10-year CVD risk ≥7.5%), adjusting for socio-demographic and behavioral factors.
RESULTS
Immigrants had a higher prevalence of hypertension (37.3 vs. 16.1%), diabetes (11.5 vs. 5.6%), poor self-rated health (69.6 vs. 61.3%), and unmet medical needs (30.9 vs. 8.9%), as well as lower rates of health checkups and cancer screening (all p<0.001), compared to native Koreans. Elevated CVD risk was more frequent in immigrants (FRS, 31.4 vs. 20.8%; PCE, 33.6 vs. 22.8%). The adjusted odds ratios (95% confidence intervals) were 1.47 (1.14 to 1.88) for FRS and 1.49 (1.07 to 2.08) for PCE. Disparities were greatest among women, adults ≥40 years, uninsured people, low-income groups, and migrants from Central Asia, Russia, and Africa.
CONCLUSIONS
Immigrants in Korea face substantially higher CVD risk than native Koreans, particularly within socioeconomically vulnerable subgroups. Targeted prevention and policies addressing structural barriers are urgently needed.; Summary

Korean summary
국내 거주 이민자는 한국인보다 불리한 건강 상태와 더 높은 심혈관질환 위험을 보였다. 특히 여성, 고령자, 저소득층 등 취약 집단에서 격차가 두드러졌으며, 이는 구조적·사회경제적 요인이 이민자 건강 불평등에 기여함을 보여준다. 이러한 결과는 포용적 보건의료 정책과 맞춤형 예방 전략 마련의 필요성을 시사한다.

Key Message
Immigrants in South Korea face unmet healthcare needs, such as limited screening access, low disease awareness, and undertreatment of dyslipidemia. Our study shows consistently higher cardiovascular risk among immigrants compared with native Koreans, especially among women, older adults, uninsured individuals, and Central Asian migrants. These findings underscore the epidemiological importance of structural and socioeconomic disadvantages in shaping immigrant health disparities and emphasize the need for culturally tailored interventions and inclusive health policies to achieve cardiovascular health equity.

Fraction of cancer incidence and mortality attributable to dietary factors in Korea from 2015 to 2030: Hyun Jeong Cho, Jin Young Yoo, Ga-Eun Yie, An Na Kim, Soseul Sung, Sungji Moon, Youjin Hong, Sangjun Lee, Inah Kim, Kwang-Pil Ko, Sun-Seog Kweon, Jung Eun Lee, Sue K. Park; Epidemiol Health. 2025;47:e2025065. Published online December 8, 2025; DOI: https://doi.org/10.4178/epih.e2025065

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Abstract Summary PDF Supplementary Material: Abstract
OBJECTIVES
Dietary factors play an important role in modifying cancer risk. This study aimed to assess the proportion of cancer incidence and mortality in Korea attributable to dietary factors from 2015 to 2030.
METHODS
We estimated the population-attributable fraction (PAF) of cancer incidence and mortality using dietary intake levels, exposure rates, and relative risks (RRs). Intake and exposure rates were derived from the Korean National Health and Nutrition Examination Survey, assuming a 15-year latency. RRs were obtained from meta-analyses of Korean cohort and case- control studies.
RESULTS
In 2020, 6.08% of cancer cases and 5.70% of deaths in Korea were attributable to dietary factors. High salted vegetable intake (2.12% for incidence and 1.78% for deaths) and low intake of non-starchy vegetables and fruits (1.92 and 2.34%, respectively) were major contributors. However, high intakes of red meat and processed meat showed low PAFs, each less than 1%. The projected PAF for cancer attributable to high salted vegetable intake is expected to decrease substantially to 1.17% in 2030. In contrast, the PAF linked to low intake of non-starchy vegetables and fruits is projected to remain relatively stable.
CONCLUSIONS
Our findings provide evidence that dietary factors make a substantial contribution to cancer incidence and mortality in Korea. This study highlights that reducing salted vegetable intake and encouraging a diet rich in non-starchy vegetables and fruits may support cancer prevention efforts. Continuous monitoring of dietary trends remains crucial for reducing the cancer burden.; Summary

Korean summary
2020년 기준으로 식이 요인은 암 발생과 사망의 일정 비율을 차지하였으며, 여러 식이 요인 중에서는 염장채소의 높은 섭취와 비전분 채소 및 과일의 낮은 섭취가 상대적으로 높은 기여를 보였다. 이러한 결과는 식이 요인별 암 부담의 차이를 이해하고, 향후 식이 섭취 양상에 대한 지속적인 관찰과 공중보건적 검토의 필요성을 시사한다.

Key Message
In 2020, dietary factors accounted for a proportion of the cancer burden, with high intake of salted vegetables and low intake of non-starchy vegetables and fruits showing the largest contributions among dietary factors examined. These findings suggest the need for continued assessment of dietary patterns and their potential relevance in public health discussions on cancer prevention.

Preventable cancer cases and deaths attributable to alcohol consumption in Korea from 2015 to 2030: Soseul Sung, Jihye An, Jeehi Jung, Hyeon Sook Lee, Sungji Moon, Inah Kim, Jung Eun Lee, Aesun Shin, Sun Ha Jee, Sun-Seog Kweon, Min-Ho Shin, Sangmin Park, Seungho Ryu, Sun Young Yang, Seung Ho Choi, Jeongseon Kim, Sang-Wook Yi, Yoon-Jung Choi, Youjin Hong, Sangjun Lee, Woojin Lim, Kyungsik Kim, Sohee Park, Jeong-Soo Im, Hong Gwan Seo, Kwang-Pil Ko, Sue K. Park; Epidemiol Health. 2025;47:e2025009. Published online February 27, 2025; DOI: https://doi.org/10.4178/epih.e2025009

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Abstract Summary PDF Supplementary Material: Abstract
OBJECTIVES
Alcohol consumption is causally linked to several cancers, and major health organizations classify it as a carcinogen. This study assessed the impact of alcohol consumption on cancer incidence and mortality in Korea in 2015 and 2020, projected trends up to 2030, and compared results based on different criteria.
METHODS
The relative risk of cancer associated with alcohol consumption in Korea was determined through a meta-analysis of alcohol-related relative risks for specific cancers, using primary data from the Korean Cohort Study within the Korean Cohort Consortium. The population-attributable fraction (PAF) was calculated using Levin’s formula, incorporating drinking prevalence and the number of cancer cases and deaths, with a 15-year latency period assumed.
RESULTS
In Korea, the PAF for alcohol consumption, based on ever/never drinking criteria, was higher than that calculated using other criteria, except for the PAF based on past and current/never drinking criteria. Alcohol consumption contributed to 3.58% of all cancer cases and 3.28% of cancer deaths in 2015. It accounted for 4.58% of new cancer cases in male and 2.08% in female, with a higher contribution to incidence than mortality (4.00 and 2.25% of cancer deaths in male and female, respectively). Projections indicate that alcohol-related cancer PAF will decrease by 17.2% in male but increase by 70.2% in female by 2030.
CONCLUSIONS
This study highlights the impact of alcohol consumption on cancer in Korea, emphasizing the need for sex-specific regulations to address sex differences.; Summary

Korean summary
2015년 알콜 섭취는 한국에서 전체 암 발생의 3.58%, 암 사망의 3.28%를 차지했으며, 남성(4.58%)이 여성(2.08%)보다 더 큰 영향을 받았음. 2030년까지 남성의 알콜 관련 암 발생률은 감소할 것으로 예상되지만, 여성에서는 급증할 것으로 보임. 이러한 결과는 특히 여성에서 증가하는 추세를 반영하여 성별 맞춤형 공공 보건 정책의 필요성을 시사함.

Key Message
In 2015, alcohol consumption was responsible for 3.58% of all cancer cases and 3.28% of cancer deaths in Korea, with a more significant impact on males (4.58% of new cases) than females (2.08%). Projections indicate a decrease in alcohol-related cancer cases among males but a sharp increase in females by 2030. These findings highlight the need for sex-specific public health measures to address the growing impact of alcohol on cancer, particularly the increasing trend in female cases.

Preventable cancer cases and deaths attributable to tobacco smoking in Korea from 2015 to 2030: Soseul Sung, Jihye An, Jeehi Jung, Hyeon Sook Lee, Sungji Moon, Inah Kim, Jung Eun Lee, Aesun Shin, Sun Ha Jee, Sun-Seog Kweon, Min-Ho Shin, Sangmin Park, Seungho Ryu, Sun Young Yang, Seung Ho Choi, Jeongseon Kim, Sang-Wook Yi, Yoon-Jung Choi, Youjin Hong, Sangjun Lee, Woojin Lim, Kyungsik Kim, Daehee Kang, Keun-Young Yoo, Sohee Park, Jeong-Soo Im, Hong Gwan Seo, Hai-Rim Shin, Kwang-Pil Ko, Sue K. Park; Epidemiol Health. 2025;47:e2025008. Published online February 27, 2025; DOI: https://doi.org/10.4178/epih.e2025008

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Abstract Summary PDF Supplementary Material: Abstract
OBJECTIVES
Tobacco smoking is a major public health concern worldwide. This study aimed to assess its impact on cancer incidence and mortality by estimating the population attributable fraction (PAF) in the Korean population for 2015 and 2020 and by projecting future trends until 2030.
METHODS
The Korean relative risk (RR) was calculated via a meta–analysis of RRs for individual cancers attributed to tobacco smoking, based on primary data analysis from the Korean Cohort Consortium. The PAF was estimated using the Levin formula with past and current prevalence rates and the number of cancer cases and deaths, assuming a 15-year latency period.
RESULTS
The proportions of cancer cases and deaths in Korea attributable to tobacco smoking were similar to those calculated using Asian and global RRs for both male and female. In 2015 and 2020, tobacco smoking contributed to 14.32% and 13.17% of cancer cases and 21.70% and 20.69% of cancer deaths in adults, respectively. Among Koreans, smoking was responsible for 25.83% of new cancer cases in male in 2015, 23.49% in male in 2020, 1.46% in female in 2015, and 1.68% in female in 2020. In both years, smoking impacted mortality more strongly than incidence in Korean male and female (incidence in male: 25.83% and 23.49%; mortality in male: 32.09% and 30.41%; incidence in female: 1.46% and 1.68%; and mortality in female: 4.70% and 4.96%, respectively).
CONCLUSIONS
Tobacco smoking causes cancers and deaths in Korea, however, it is preventable. Effective control policies that consider trends and vulnerabilities among female are required.; Summary

Korean summary
한국에서 흡연으로 인한 암 부담은 2015년 발생 14.32%, 사망 21.70%였고 2020년에는 발생 13.17%, 사망 20.69%로 나타남. 두 해 모두 남성에서 부담이 훨씬 컸음(남성: 발생 2015년 25.83%, 2020년 23.49%; 사망 2015년 32.09%, 2020년 30.41% / 여성: 발생 2015년 1.46%, 2020년 1.68%; 사망 2015년 4.70%, 2020년 4.96%). 흡연은 예방 가능한 주요 원인이므로, 여성의 취약성과 추세를 고려한 보다 강력한 금연·규제 정책 강화가 필요함.

Key Message
In Korea, tobacco smoking accounted for 14.32% of incident cancers and 21.70% of cancer deaths in 2015, and 13.17% of incidence and 20.69% of mortality in 2020. The burden was much greater in men than in women in both years (men: incidence 25.83% in 2015 and 23.49% in 2020; mortality 32.09% in 2015 and 30.41% in 2020; women: incidence 1.46% in 2015 and 1.68% in 2020; mortality 4.70% in 2015 and 4.96% in 2020). Smoking remains a preventable driver of substantial cancer incidence and mortality, calling for stronger control policies that also address emerging vulnerabilities among women.

Preventable cancer cases and deaths attributable to deficit of physical activity in Korea from 2015 to 2030: Soseul Sung, Sungji Moon, Jihye An, Jeehi Jung, Hyeon Sook Lee, Youjin Hong, Sangjun Lee, Woojin Lim, Kyungsik Kim, Inah Kim, Jung Eun Lee, Sun Ha Jee, Aesun Shin, Ji-Yeob Choi, Sun-Seog Kweon, Min-Ho Shin, Sangmin Park, Seungho Ryu, Sun Young Yang, Seung Ho Choi, Jeongseon Kim, Sang-Wook Yi, Yoon-Jung Choi, Jeong-Soo Im, Hong Gwan Seo, Sohee Park, Kwang-Pil Ko, Sue K. Park; Epidemiol Health. 2025;47:e2025010. Published online January 27, 2025; DOI: https://doi.org/10.4178/epih.e2025010

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Abstract Summary PDF Supplementary Material: Abstract
OBJECTIVES
This study aimed to determine the population-attributable fractions (PAFs) of cancers using various calculation methods and to estimate the PAFs of cancer incidence and mortality resulting from deficit in physical activity (DPA) from 2015 to 2030, based on data on prevalence rates.
METHODS
The PAF of cancer was estimated using a cohort study-based meta-analysis of relative risk (RR), national prevalence rates of DPA from 2000 to 2015, and national cancer statistics from 2015 to 2030, with a latency of 15 years.
RESULTS
In 2015, DPA contributed to 909 cancer cases and 548 deaths, accounting for 0.42% and 0.68% of new cancer cases and deaths, respectively. By 2030, the PAF values are expected to increase to 1.31% of incidence and 1.80% of mortality, with a continual increase from 2015 to 2030. When the low metabolic equivalent of task (MET) criteria were selected, the PAF values decreased for both incidence and mortality. The PAF calculated with <900 MET-min/wk for the sex-specific MET criterion was higher than that calculated with <900 MET-min/wk for both incidence and mortality.
CONCLUSIONS
The risk of cancer associated with DPA is expected to rise in both male and female. Future research and strategies should emphasize the promotion of physical activity for cancer prevention, considering its significant implications for public health.; Summary

Korean summary
2015년 신체활동 부족(deficit in physical activity, DPA)에 의한 인구집단기여분율(population-attributable fraction, PAF)은 암 발생 0.42%(909건), 암 사망 0.68%(548건)였으며 2030년에는 각각 1.31%, 1.80%로 증가할 것으로 예측됨. 남녀 모두에서 DPA로 인한 암 부담이 증가하고 있으므로, 암 예방을 위한 신체활동 증진 전략을 강화할 필요가 있음.

Key Message
In 2015, deficit in physical activity (DPA) accounted for 0.42% of incident cancers (909 cases) and 0.68% of cancer deaths (548 deaths), with population-attributable fraction (PAF) values projected to rise to 1.31% for incidence and 1.80% for mortality by 2030. The cancer burden attributable to DPA is increasing in both sexes, underscoring the need to strengthen population-level physical-activity promotion for prevention.

Comparative analysis of body mass index and obesity-related anthropometric indices for mortality prediction: a study of the Namwon and Dong-gu cohort in Korea: Ye Rim Kim, Min-Ho Shin, Young-Hoon Lee, Seong-Woo Choi, Hae-Sung Nam, Jeong-Ho Yang, Sun-Seog Kweon; Epidemiol Health. 2024;46:e2024066. Published online July 17, 2024; DOI: https://doi.org/10.4178/epih.e2024066

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Abstract Summary PDF

Abstract

OBJECTIVES
This study investigated the associations between several obesity-related anthropometric indices and mortality in middle-aged and elderly populations to compare the indices’ predictive ability with that of the body mass index (BMI).

METHODS

We analyzed data on 12 indices calculated from 19,805 community-based cohort participants (average age, 63.27 years; median follow-up, 13.49 years). Each index was calculated using directly measured values of height, weight, waist circumference (WC), and hip circumference (HC). We calculated hazard ratios (HRs) and 95% confidence intervals (CIs) for each index using Cox regression and evaluated mortality prediction with the Harrell concordance index (c-index).

RESULTS

Adding anthropometric indices to the basic mortality model (c-index, 0.7723; 95% CI, 0.7647 to 0.7799) significantly increased the predictive power of BMI (c-index, 0.7735; 95% CI, 0.7659 to 0.7811), a body shape index (ABSI; c-index, 0.7735; 95% CI, 0.7659 to 0.7810), weight-adjusted waist index (WWI; c-index, 0.7731; 95% CI, 0.7656 to 0.7807), and waist to hip index (WHI; c-index, 0.7733; 95% CI, 0.7657 to 0.7809). The differences between the BMI model and the other 3 models were not statistically significant.

CONCLUSIONS

In predicting all-cause mortality, the ABSI, WWI, and WHI models based on WC or HC had stronger predictive power than conventional risk factors but were not significantly different from the BMI model.

Summary

Korean summary
- 다수의 비만관련 신체계측지표들이 사망률을 유의하게 예측하였지만 체질량지수보다 통계적으로 우월하지는 않았다. - 복부둘레가 고려된 비만지표들이 사망률예측에 더 유용할 것으로 추정된다.

Key Message
- Several obesity indices provided predictive value for all-cause mortality but were not superior to body mass index - Obesity indices that take abdominal circumference into account are likely to be more useful for predicting mortality.

Citations

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A J-shaped association between weight-adjusted waist index and cardiovascular disease: a longitudinal study from the CHARLS database
Jiang Wang, Aizhang Zhu, Rui Zeng, Lihuan Chen, Fayi Xie, Ke Zhu, Tenghui Fan, Dongmei Ye, Yishan Wu, Wan Zhu, Jiahui Bian, Yuxu Huang, Shunrui Xiao, Mengxia Shi, Yi Xiao, Wenwu Zhang, Xiaoming Zhang
BMC Public Health.2025;[Epub] CrossRef
Development of an equation for estimating body fat mass using basic demographic and anthropometric indices
N.V. Zaverukha, N.V. Grygorieva, A.S. Musiienko, N.M. Koshel
INTERNATIONAL JOURNAL OF ENDOCRINOLOGY (Ukraine).2025; 21(8): 845. CrossRef
Accumulated subcutaneous fat in abdomen is associated with long COVID-19 symptoms among non-hospitalized patients: a prospective observational study
Tingxin Li, Baoming He, Yuping Liu, Chen Wang
Frontiers in Medicine.2024;[Epub] CrossRef

No association between genetically predicted C-reactive protein levels and colorectal cancer survival in Korean: two-sample Mendelian randomization analysis: Chang Kyun Choi, Jung-Ho Yang, Min-Ho Shin, Sang-Hee Cho, Sun-Seog Kweon; Epidemiol Health. 2023;45:e2023039. Published online March 22, 2023; DOI: https://doi.org/10.4178/epih.e2023039

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
Elevated C-reactive protein (CRP) levels are associated with an increased risk for colorectal cancer (CRC), as well as a poor prognosis, but it remains unclear whether these associations are causal. This study examined the potential causality between CRP levels and CRC survival using 2-sample Mendelian randomization (MR).

METHODS

From the Korean Genome and Epidemiology Study, a genome-wide association study (n=59,605), 7 single-nucleotide polymorphisms (SNPs) related to log2-transformed CRP levels were extracted as instrumental variables for CRP levels. The associations between the genetically predicted CRP and CRC-specific and overall mortality among CRC patients (n=6,460) were evaluated by Aalen’s additive hazard model. The sensitivity analysis excluded a SNP related to the blood lipid profile.

RESULTS

During a median of 8.5 years of follow-up, among 6,460 CRC patients, 2,676 (41.4%) CRC patients died from all causes and 1,622 (25.1%) died from CRC. Genetically predicted CRP levels were not significantly associated with overall or CRC-specific mortality in CRC patients. The hazard difference per 1,000 person-years for overall and CRC-specific mortality per 2-fold increase in CRP levels was -2.92 (95% confidence interval [CI], -14.05 to 8.21) and -0.76 (95% CI, -9.61 to 8.08), respectively. These associations were consistent in a subgroup analysis according to metastasis and a sensitivity analysis excluding possible pleiotropic SNPs.

CONCLUSIONS

Our findings do not support a causal role for genetically predisposed CRP levels in CRC survival.

Summary

Korean summary
이 연구는 two-sample Mendelian randomization (MR)을 이용하여 대장암에서 C-reactive protein와 사망률 간의 관련성을 평가하였다. Two-sample MR은 한국유전체역학조사사업 (the Korean Genome and Epidemiology Study, KoGES) 참가자 59,605명에서 혈청 C-reactive protein에 대한 전장유전체 분석을 시행하여 7개의 단일염기다형성을 선별하였고, 화순암역학연구-대장암 (thw Hwasun Cancer Epidemiology Study-Colon and Rectum Cancer, HCES-CRC)에 등록된 6,460명 대장암 환자에서 그 7개 단일염기다형성과 사망률 간의 관련성을 평가한 결과를 이용하였다. 그 결과, 높은 혈청 C-reactive protein을 가지는 유전적 성향은 대장암 환자에서 사망률과의 통계적으로 유의한 관련성을 찾을 수 없었다.

Key Message
This study employed a two-sample Mendelian randomization (MR) analysis to investigate the relationship between serum C-reactive protein (CRP) levels and mortality in colorectal cancer. The analysis utilized genome-wide association analysis (GWAS) data from 59,605 participants in the Korean Genome and Epidemiology Study (KoGES) for serum CRP and 6,460 colorectal cancer cases from the Hwasun Cancer Epidemiology Study-Colon and Rectum Cancer for mortality. Our findings suggest that there is no statistically significant association between genetically predisposed serum CRP levels and mortality. Consequently, our study does not support a causal effect of CRP on mortality in colorectal cancer.

Citations

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The Association between Genetically Predicted C-Reactive Protein Levels and Risk of Colorectal Cancer in an East Asian Population: Two-Sample Mendelian Randomization
Chang Kyun Choi, Jung-Ho Yang, Min-Ho Shin, Sang-Hee Cho, Wei-Hua Jia, Jeongseon Kim, Aesun Shin, Dong-Hyun Kim, Keitaro Matsuo, Sun Ha Jee, Koichi Matsuda, Yu-Tang Gao, Xiao-Ou Shu, Wei Zheng, Sun-Seog Kweon
Cancer Epidemiology, Biomarkers & Prevention.2026; 35(2): 348. CrossRef
Novel genetic loci and functional properties of immune-related genes for colorectal cancer survival in Korea
Dabin Yun, Jung-Ho Yang, Soyoun Yang, Jin-ah Sim, Minjung Kim, Ji Won Park, Seung Yong Jeong, Aesun Shin, Sun-Seog Kweon, Nan Song
BMC Cancer.2025;[Epub] CrossRef
Identification of MMP14 and MKLN1 as colorectal cancer susceptibility genes and drug-repositioning candidates from a genome-wide association study
Dabin Yun, Jung-Ho Yang, Jin-ah Sim, Minjung Kim, Ji Won Park, Seung Yong Jeong, Aesun Shin, Sun-Seog Kweon, Nan Song
Journal of Translational Medicine.2025;[Epub] CrossRef
Mortality risk among adult americans living with cancer and elevated CRP
Srikanta Banerjee, Jagdish Khubchandani, Shalika Tisinger, Kavita Batra, Maribeth Greenway
Cancer Epidemiology.2024; 90: 102569. CrossRef

No evidence of delay in colorectal cancer diagnosis during the COVID-19 pandemic in Gwangju and Jeonnam, Korea: Hye-Yeon Kim, Min-Gyeong Kim, Mi-Ran Kang, Jeong-Ho Yang, Min-Ho Shin, Sun-Seog Kweon; Epidemiol Health. 2022;44:e2022092. Published online October 17, 2022; DOI: https://doi.org/10.4178/epih.e2022092

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Abstract Summary PDF

Abstract

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. Logistic regression was also performed to identify factors associated with the risk for diagnosis in an advanced stage.

RESULTS

No negative effects indicating a higher CRC stage at diagnosis or delayed treatment during the pandemic were observed. Instead, the risk for an advanced stage at diagnosis (TNM stage III/IV) decreased in CRC patients diagnosed during the pandemic (odds ratio, 0.768; 95% confidence interval, 0.647 to 0.911). No significant differences in the interval from diagnosis to operation or chemotherapy were observed.

CONCLUSIONS

No negative effects on CRC diagnosis and treatment were found until the end of 2021, which may be related to the small magnitude of the COVID-19 epidemic, the absence of a lockdown policy in Korea, and the rebound in the number of diagnostic colonoscopy procedures in 2021.

Summary

Korean summary
COVID-19 판데믹 시기에 진단된 대장암환자에서 진단병기의 지연과 치료의 지연이 발생한 증거는 찾을 수 없었다. 이것은 2021년까지 한국에서는 유행규모가 크지 않았고, 의료기관 또는 지역단위의 봉쇄정책이 거의 없었기 때문일 것으로 추정된다.

Key Message
No evidence of delayed diagnosis and treatment of colorectal cancer was found during the COVID-19 pandemic period (2020-2021) in Gwangju-Jeonnam, Korea. It may be related to the small magnitude of the COVID-19 epidemic, the absence of a lockdown policy in Korea.

Citations

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The Impact of COVID-19 Pandemic on the Diagnosis, Treatment, and Outcomes of Colorectal Cancer in Singapore
Hui Lionel Raphael Chen, Piea Peng Lee, Yun Zhao, Wei Hao Caleb Ng, Jiashen Zhao, Yu En Christopher Tan, Bo Jie Sean Loh, Kah-Hoe Pierce Chow, Hiang Khoon Tan, Kwong-Wei Emile Tan
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Perspective

Measles susceptibility of marriage migrant women in Korea: Sooyeon Kim, Sun A Kim, Hanbich Hong, Seong Ryeong Choi, Hae-Young Na, Sung Un Shin, Kyung-Hwa Park, Sook In Jung, Min-Ho Shin, Sun-Seog Kweon, Seung Ji Kang; Epidemiol Health. 2022;44:e2022031. Published online March 12, 2022; DOI: https://doi.org/10.4178/epih.e2022031

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Abstract Summary PDF

Abstract

International migrants could be considered a risk group susceptible to vaccine-preventable diseases. We conducted a measles seroprevalence study among 419 marriage migrant women living in Sinan-gun and Wando-gun, South Jeolla Province, located in the southwestern part of Korea. The overall seroimmunity was 92.8%. The seroimmunity varied considerably according to the country of origin and increased with age. Our current analysis could be valuable in the context of discussions concerning vaccination policies for immigrants in Korea.

Summary

Korean summary
전라남도 신안군과 완도군에 거주하는 결혼이주여성 419명을 대상으로 홍역항체 양성률을 조사하였다. 전체적 항체양성률은 92.8% 로 높았으나, 나이로 나누어 분석하였을 때, 30세 미만에서는 83.1% 로 30세 이상의 95.5% 에 비해 통계적으로 유의미하게 낮았다. 출신국가에 따른 분석에서는 캄보디아 출신의 경우 30세 미만에서 항체 양성률이 40.0 % 에 불과하여, 타국가 들에 비해 통계적으로 유의미하게 낮았다.

Key Message
To prevent measles resurgence, continuous monitoring of immunity in communities, including foreign-born populations who may have different serostatus, is essential.

Citations

Citations to this article as recorded by

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