Risk of Subsequent Diabetes Mellitus in Stroke Survivors According to Poststroke Disability Status and Stroke Type.

This study used the Korean National Health Insurance System database to examine how poststroke disability and stroke type affect the risk of diabetes mellitus (DM) in stroke survivors. Data for 217 157 stroke survivors and 312 138 matched controls were analyzed. The relative risk of DM was assessed using multivariate Cox proportional hazards regression models.

Changes in smoking, alcohol consumption, and the risk of Parkinson's disease.

Objective: There have been no studies on the association between changes in smoking and alcohol consumption or combined changes in smoking and alcohol consumption frequencies and PD risk. To assess the influence of changes in smoking and alcohol consumption on the risk of Parkinson's disease (PD).

Methods: National Health Insurance Service (NHIS) database between January 2009 to December 2011 was analyzed.

Blood pressure and dementia risk by physical frailty in the elderly: a nationwide cohort study.

Background: Midlife hypertension has been recognized as a modifiable risk factor for dementia, but association between blood pressure (BP) in late life and dementia has been inconclusive. In addition, few studies have investigated effects of BP control on dementia incidence in the frail elderly. Thus, this study aimed to investigate the association of BP and dementia incidence with concomitant consideration of physical frailty in the young elderly population.

Association Between Changes in Alcohol Consumption and Cancer Risk.

Importance: Although numerous studies have shown an association between alcohol consumption and cancer, how changes in drinking behavior increase or decrease the incidence of cancer is not well understood.

Objective: To investigate the association between the reduction, cessation, or increase of alcohol consumption and the development of alcohol-related cancers and all cancers.

Design, Setting, And Participants: This population-based cohort study analyzed adult beneficiaries in the Korean National Health Insurance Service.

Association of Change in Alcohol Consumption With Risk of Ischemic Stroke.

Background: The effect of serial change in alcohol consumption on stroke risk has been limitedly evaluated. We investigated the association of change in alcohol consumption with risk of stroke.

Methods: This study is a population-based retrospective cohort study from National Health Insurance Service database of all Koreans.

Impact of Frailty on the Relationship between Blood Pressure and Cardiovascular Diseases and Mortality in Young-Old Adults.

The optimal blood pressure (BP) target in older people according to frailty status remains uncertain. This article investigates how frailty affects the association between BP and cardiovascular diseases or mortality, specifically in young-old adults. A retrospective cohort was created for 708,964 older adults with a uniform age of 66 years.

Smoking, Alcohol Consumption, and the Risk of Thyroid Cancer: A Population-Based Korean Cohort Study of 10 Million People.

It is unclear if cigarette smoking and alcohol consumption are associated with thyroid cancer risk. Our aim was to explore for any associations between cigarette smoking and alcohol consumption with thyroid cancer, after adjusting for potential confounders. Using data from the Korean National Health Insurance database, we retrospectively identified individuals aged ≥20 years who participated in the 2009 health screening program and were followed until 2017.

Association between Kidney Function, Proteinuria and the Risk of Multiple Myeloma: A Population-Based Retrospective Cohort Study in South Korea.

Purpose: While renal impairment is one of the first clinical manifestations of multiple myeloma (MM), declined renal function may conversely be a risk factor for cancers including MM. In this study, we investigated the relationship between chronic kidney disease and MM at a population level.

Materials And Methods: A total of 9,809,376 adults who participated in a nationwide health screening program and had no MM, cancer or end-stage renal disease at baseline were investigated for incidence of MM.

Changes in Smoking, Alcohol Consumption, and the Risk of Thyroid Cancer: A Population-Based Korean Cohort Study.

To elucidate potential causality between smoking and alcohol intake on thyroid cancer incidence, we explored the effect of changes in smoking and alcohol consumption habits. From the Korean National Health Insurance database, we identified 4,430,070 individuals who participated in the national health screening program in 2009 and 2011. The level of smoking and alcohol consumption was measured twice, once in 2009 and again in 2011.

Associations Between Kidney Function, Proteinuria, and the Risk of Kidney Cancer: A Nationwide Cohort Study Involving 10 Million Participants.

Chronic kidney disease in its later stages is associated with increased risk of kidney cancer. We investigated whether chronic kidney disease at milder stages is associated with increased kidney cancer risk, using a retrospectively selected cohort of 9,809,317 adults in the Republic of Korea who participated in a nationwide health screening (2009-2016). We examined the impact of estimated glomerular filtration rate (eGFR), dipstick proteinuria, and interactive associations between the 2 factors on the risk of incident kidney cancer.

The Timed Up and Go test and the ageing heart: Findings from a national health screening of 1,084,875 community-dwelling older adults.

Aim: This study aimed to evaluate the relationship between Timed Up and Go test performance and the incidence of older adult heart diseases and mortality.

Methods: This was a retrospective cohort study of 1,084,875 older adults who participated in a national health screening program between 2009-2014 (all aged 66 years old). Participants free of myocardial infarction, congestive heart failure, and atrial fibrillation at baseline were included and were divided into Group 1 (<10 s), Group 2 (10-20 s) and Group 3 (≥20 s) using the Timed Up and Go test scores.

Changes in Metabolic Syndrome Status and Breast Cancer Risk: A Nationwide Cohort Study.

Objective: To our knowledge, no studies have yet looked at how the risk of developing breast cancer (BC) varies with changes in metabolic syndrome (MetS) status. This study aimed to investigate the association between changes in MetS and subsequent BC occurrence.

Research Design And Methods: We enrolled 930,055 postmenopausal women aged 40-74 years who participated in a biennial National Health Screening Program in 2009-2010 and 2011-2012.

Association between physical performance and incidence of end-stage renal disease in older adults: a national wide cohort study.

Background: Physical frailty has previously been associated with adverse clinical outcomes in patients with end-stage renal disease (ESRD). This study aimed to determine whether impaired physical performance at baseline is associated with the incidence of ESRD, using a nationwide database.

Methods: The timed up-and-go (TUG) test was used to assess physical frailty in 1,552,781 66-year-old individuals, using health examination database records from the Korean National Health Insurance Service.

Smoking, alcohol consumption, and the risk of thyroid cancer: a population-based Korean cohort study of 10 million people.

Background: The association between smoking, alcohol consumption, and thyroid cancer has been evaluated in observational studies, yet the results remain controversial. In the present investigation, we analyzed a longitudinal cohort study with representative data to determine the association between smoking, alcohol consumption, and thyroid cancer risk, allowing for risk modification due to age and sex.

Methods: From the Korean National Health Insurance database, .

Potentially modifiable blood triglyceride levels by the control of conventional risk factors.

Backgrounds: Triglyceride (TG) is known to be regulated by multiple lifestyle factors rather than genetic factors. This cross-sectional and community-based study (Healthy Twin study in Korea) aimed to estimate the "modifiable TG level" by identifying non-genetic risk factors of TG.

Methods: Participants were recruited between 2006 and 2011 who fulfilled health examinations and detail surveys: 3079 Korean adults including 949 monozygotic twins and 222 dizygotic twins.

Timed up-and-go test is a useful predictor of fracture incidence.

Purpose: The timed up-and-go (TUG) test is a validated screening tool to assess fall risk. This study evaluated the association between the TUG test and future fractures, which are a tangible clinical complication of falling.

Methods: We included 1,070,320 participants who participated in the National Screening Program for Transitional Ages for Koreans aged 66 years old from 2009 to 2014.

A national survey of lung cancer specialists' views on low-dose CT screening for lung cancer in Korea.

Lung cancer specialists play an important role in designing and implementing lung cancer screening. We aimed to describe their 1) attitudes toward low-dose lung computed tomography (LDCT) screening, 2) current practices and experiences of LDCT screening and 3) attitudes and opinions towards national lung cancer screening program (NLCSP). We conducted a national web-based survey of pulmonologists, thoracic surgeons, medical oncologists, and radiological oncologists who are members of Korean Association for Lung Cancer (N = 183).

Functional Connectivity of the Hippocampus in Early- and vs. Late-Onset Alzheimer's Disease.

Background And Purpose: Early-onset Alzheimer's disease (EOAD) and late-onset Alzheimer's disease (LOAD) have different clinical and neuroimaging characteristics, but memory decline is usually present in both types. However, there have been few functional studies focused on the hippocampus in Alzheimer's disease. We therefore investigated the functional connectivity between the hippocampus and other brain regions using resting-state fMRI and compared the findings between EOAD and LOAD.

Exosome Proteome of U-87MG Glioblastoma Cells.

Exosomes are small membrane vesicles between 30 and 100 nm in diameter secreted by many cell types, and are associated with a wide range of physiological and/or pathological processes. Exosomes containing proteins, lipids, mRNA, and microRNA contribute to cell-to-cell communication and cell-to-environment regulation, however, their biological functions are not yet fully understood. In this report, exosomes in the glioblastoma cell line, U-87MG, were isolated and the proteome was investigated.

Development and application of culturally appropriate decision aids for smoking cessation in Korea: a pragmatic clustered randomization crossover trial.

Introduction: In Asian countries, reluctance to seek pharmacological intervention is a major barrier for smoking cessation. Culturally appropriate decision aids are expected to help people in the decision making for the use of smoking cessation medication.

Objective: The aim of this study was to develop a culturally tailored decision aid for smoking cessation and evaluate its effect on the use of smoking cessation medication.

Sugar-sweetened carbonated beverage consumption and coronary artery calcification in asymptomatic men and women.

Background: Sugar-sweetened carbonated beverage consumption has been linked to obesity, metabolic syndrome, type 2 diabetes, and clinically manifest coronary heart disease, but its association with subclinical coronary heart disease remains unclear. We investigated the relationship between sugar-sweetened carbonated beverage consumption and coronary artery calcium (CAC) in a large study of asymptomatic men and women.

Methods: This was a cross-sectional study of 22,210 adult men and women who underwent a comprehensive health screening examination between 2011 and 2013 (median age 40 years).

Egg consumption and coronary artery calcification in asymptomatic men and women.

Objective: The association of egg consumption with subclinical coronary atherosclerosis remains unknown. Our aim was to examine the association between egg consumption and prevalence of coronary artery calcium (CAC).

Methods: Cross-sectional study of 23,417 asymptomatic adult men and women without a history of cardiovascular disease (CVD) or hypercholesterolemia, who underwent a health screening examination including cardiac computed tomography for CAC scoring and completed a validated food frequency questionnaire at the Kangbuk Samsung Hospital Total Healthcare Centers, South Korea (March 2011-April 2013).