Validation of the Korean Version of the Pain-related Beliefs and Attitudes about Sleep (PBAS) scale Among Patients with Chronic Pain.

Objectives: We assessed the reliability and validity of the Korean version of the Pain-related Beliefs and Attitudes about Sleep (PBAS) scale among patients with chronic pain. Furthermore, we investigated whether pan-related dysfunctional beliefs about sleep mediate the relationship between sleep severity and pain.

Methods: Overall, 100 participants with chronic pain were recruited using an anonymous online survey.

Validation of the Grief Support in Healthcare Scale among frontline nursing professionals working in COVID-19 inpatient wards in Korea.

Introduction: During the COVID-19 pandemic, healthcare workers (HCWs) have been exposed to higher levels of anxiety and psychological stress than the general population. Nurses who cared for COVID patients could not avoid repeated mourning as they witnessed the deaths of their patients. Therefore, tools are needed to evaluate whether there is adequate support for the grieving process of HCWs in both qualitative and quantitative manners.

Grief Response of Nursing Professionals Is Associated With Their Depression, Loneliness, Insomnia, and Work-Related Stress While Working in COVID-19 Inpatients Wards.

Objective: We aimed to explore whether nursing professionals' psychological states affect their grief response for a patient's death in the coronavirus disease-2019 (COVID-19) inpatients' ward.

Methods: Survey was conducted among frontline nursing professionals working in COVID-19 inpatients wards at three tertiary-level affiliated hospitals of the University of Ulsan during April 7-26, 2022. Participants' information such as age, years of employment, or marital status were collected, and their responses to rating scales including Pandemic Grief Scale (PGS) for healthcare workers, Stress and Anxiety to Viral Epidemics-9 items (SAVE-9), Patient Health Questionnaire-9 (PHQ-9), Loneliness and Social Isolation Scale, and Insomnia Severity Scale (ISI) were collected.

Network structure of insomnia symptoms in shift workers compared to non-shift workers.

Insomnia is a commonly occurring sleep problem in shift workers. So far, no studies have investigated how insomnia symptoms present differently in shift workers and non-shift workers. The purpose of this study was to compare the network structures and centrality indices of shift and non-shift workers using network analysis and network comparison test.

Screening for Adult Attention-Deficit Hyperactivity Disorder in the Korean Community Sample: Prevalence and Association with Mood and Sleep Symptoms.

Objective: Attention-deficit hyperactivity disorder (ADHD) symptoms start in early childhood and continue into adulthood, and are frequently associated with comorbid symptoms of depression, bipolar, insomnia, and daytime sleepiness. The aim of this study was to screen adult ADHD symptoms in a community sample and investigate the association of adult ADHD symptoms with mood and sleep symptoms.

Methods: Respondents (n = 1500) from the general adult population, aged between 19 and 49 years, were recruited.

Validation of the Korean Version of the Positive and Negative Sleep Appraisal Measure (PANSAM) as a Tool for Evaluating Dysfunctional Beliefs about Sleep among the General Population.

We explored the reliability and validity of the Korean version of the Positive and Negative Sleep Appraisal Measure (PANSAM) scale using pre-existing sleep-related questionnaires among the general population. Through an online survey, data from 400 South Korean participants were collected from 10 to 18 January 2022. Symptoms were measured with the PANSAM, Insomnia Severity Index (ISI), the 16-item Dysfunctional Beliefs and Attitudes about Sleep Scale (DBAS-16), the Glasgow Sleep Effort Scale (GSES), and the discrepancy between desired time in bed and the desired total sleep time (DBST) index.

Effect of Long-Term Benzodiazepines for Chronic Insomnia on Cognitive Function and Waking Electroencephalography: A Case-Control Study.

Objective: The relationship between benzodiazepine use and cognitive decline in insomnia patients has been reported, but still conflicting. Thus, we tried to determine whether long-term exposure of benzodiazepine might be associated with changes of cognition and electroencephalography (EEG) findings in patients with chronic insomnia.

Methods: Insomniacs using benzodiazepines (n=29), drug-free insomniacs (n=27), and age- and sex-matched controls (n=28) were recruited.

Effects of subjective-objective sleep discrepancy on the response to cognitive behavior therapy for insomnia.

Objective: This study aimed to evaluate the clinical correlates of sleep discrepancy and how subjective-objective sleep discrepancy (SD) affects the results of cognitive behavioral therapy for insomnia (CBT-I) in patients with insomnia disorder.

Methods: A total of 33 patients aged >55 years with insomnia disorders participated in this prospective cohort study. Sleep discrepancy (SD) was defined as the difference between the sleep duration derived from the PSG and self-report questionnaires.

Lifestyle Changes that Impact Personal Quality of Life in the COVID-19 Pandemic in South Korea.

Objective: We investigated which factors in psychological changes positively or negatively affect the quality of life to suggest desirable directions in the period of the COVID-19 pandemic.

Methods: Online survey was conducted with 1,011 adults more than 19 years old in Busan, South Korea. Quality of life was measured using the World Health Organization Quality of Life-BREF.

The Prevalence of Depression, Anxiety and Associated Factors among the General Public during COVID-19 Pandemic: a Cross-sectional Study in Korea.

Background: Since its first case confirmed on January 20, 2020, Korea has been through three waves of the COVID-19 pandemic. Fears of the fourth wave persist as new cases continue to emerge. In such unpredictable times, the mental well-being of people is of crucial importance.

Preliminary Investigation of Association between Methylphenidate and Serum Growth Markers in Children with Attention-Deficit/Hyperactivity Disorder: A Cross-Sectional Case-Control Study.

Objectives: It remains unclear whether methylphenidate (MPH) has yadverse effects on growth in children. This study aimed to investigate the association of MPH with serum biological markers of growth in children with attention-deficit/hyperactivity disorder (ADHD).

Methods: The present study included 103 children with ADHD (64 drug-naive children, 39 MPH-treated children) and 112 control subjects.

Minimal Effects of Binaural Auditory Beats for Subclinical Insomnia: A Randomized Double-Blind Controlled Study.

Background: Auditory binaural beat (BB) stimulation is known to modulate electroencephalographic activity by brain entrainment, but few studies have established whether BB can affect the sleep state. We examined the effect of θ BB in improving sleep disturbances and daytime alertness.

Methods: We conducted double-blind and sham-controlled randomized trial.

Multidimensional Comparison of Cancer-Related Fatigue and Chronic Fatigue Syndrome: The Role of Psychophysiological Markers.

Objective: The present study compared cancer-related fatigue (CRF) and chronic fatigue syndrome (CFS) using multidimensional measurements with the aim of better understanding characteristics and exploring markers of two similar fatigue syndromes.

Methods: Twenty-five patients with CRF and twenty patients with CFS completed questionnaires, including the Fatigue Severity Scale (FSS), Hospital Anxiety Depression Scale (HADS), Perceived Stress Scale (PSS), and Pittsburgh Sleep Quality Index (PSQI). Additionally, levels of high sensitivity C-reactive protein (hs-CRP), heart rate variability (HRV), and electroencephalography (EEG) were obtained.

A validation study on three screening questionnaires for obstructive sleep apnea in a Korean community sample.

Purpose: Obstructive sleep apnea (OSA) is highly prevalent and causes serious cardiovascular complications. Several screening questionnaires for OSA have been introduced, but only few validation studies have been conducted in general population. The aim of the present study was to assess the diagnostic value of three OSA screening questionnaires (Berlin Questionnaire, BQ; STOP-Bang Questionnaire, STOP-B; Four-Variable Screening Tool, Four-V) in a Korean community sample.

Symptom Persistence after Iron Normalization in Women with Restless Legs Syndrome.

Objective: The aim of this study was to determine the clinical course of restless legs syndrome (RLS) and potential risk factors for the persistence of RLS symptoms after iron normalization in women with RLS and low serum ferritin (<50 μg/L).

Methods: We reviewed 39 women with RLS and iron deficiency, who achieved iron normalization after oral iron replacement for three months. Risk factors contributing to symptom persistence were estimated by logistic regression analyses.

Modest Improvement of Untreated Severe Sleep-Disordered Breathing in the Middle-Aged and Elderly.

Objective: It has been reported that untreated sleep-disordered breathing (SDB) deteriorates over time, however this remains contentious. The aim of the present study is to evaluate the clinical course of SDB in middle-aged and older SDB patients, and to identify how relevant factors contribute to the change in SDB severity.

Methods: Baseline and follow-up polysomnographic data of 56 untreated SDB patients (mean age, 61.

Differential effects of circadian typology on sleep-related symptoms, physical fatigue and psychological well-being in relation to resilience.

Various physiological and psychological functions are influenced by circadian typology (CT), which was reported to be related to resilience. However, few studies have assessed the effects of CT in relation to resilience. The aim of the present study was to assess the influence of CT on sleep-related symptoms, physical fatigue and psychological well-being in relation to resilience.

Alterations of awake EEG in idiopathic REM sleep behavior disorder without cognitive impairment.

The aim of this study was to find electroencephalographic (EEG) changes in subjects with drug-naïve idiopathic rapid eye movement sleep behavior disorder (iRBD) who had no cognitive impairment. A total of 57 iRBD patients confirmed by polysomnography (PSG) and 33 sex and age-matched healthy controls were included and their waking EEG was recorded from five cortical regions for 15min. Power spectral analyses by fast Fourier transforms were performed on EEG data.

Symptom Severity of Restless Legs Syndrome Predicts Its Clinical Course.

Objective: This study examines the clinical course of restless legs syndrome according to its severity and factors associated with the remission of restless legs syndrome symptoms.

Methods: The remission or persistence of restless legs syndrome symptoms was investigated by considering patients with restless legs syndrome at the sleep clinic of Seoul National University Bundang Hospital. All subjects were observed for at least 18 months, and an incidence of remission was defined as having no restless legs syndrome symptoms for at least 1 year.

Cut-Off Scores of the Children's Depression Inventory for Screening and Rating Severity in Korean Adolescents.

Objective: The aim was to establish an optimal cut-off score of the Children's Depression Inventory (CDI) for detecting depression and rating severity in Korean adolescents.

Methods: A total of 468 students aged 12-16 years from 8 middle schools in Busan, Korea participated in this study. The Korean version of the CDI and Kiddie Schedule for Affective Disorders and Schizophrenia Present and Lifetime Version were used to evaluate depressive symptoms.

Sex and Age Differences in Psychiatric Disorders among Children and Adolescents: High-Risk Students Study.

Objective: The aims of the present study are to investigate the rate of the psychiatric disorders in psychiatrically high-risk children and adolescents and to examine sex and age differences in the diagnosis of psychiatric disorders.

Methods: The participants included students aged 6-16 from the 27 elementary and the 45 middle schools in Busan, Korea. We screened psychopathology using the Korean version of Child Behavior Checklist (K-CBCL) or the Youth Self Report (K-YSR).