Suicide is a leading cause of death among adolescents globally, and body weight is also a recognized reason for adolescent suicide. Therefore, we investigated the association between weight control behaviors (WCB) and suicide ideation and attempt, focusing on inappropriate weight control measures. We used data from the 2014 Korea Youth Risk Behavior Web-based Survey, representing a total of 35,224 boys and 34,361 girls aged 12 to 18 years. Adolescents were classified into groups based on WCB: appropriate WCB, inappropriate WCB, and no WCB. We performed logistic regression models to examine associations between WCB and suicide ideation and attempt, controlling for covariates. Both boys and girls with inappropriate WCB were more likely to report suicide ideation and attempt. Underweight and normal weight boys with inappropriate WCB were more likely to think or attempt suicide, and underweight girls with inappropriate WCB were also more likely to attempt suicide. Among five common WCB combinations, the combination of "regular exercise, fasting, eating less" was highly associated with suicide ideation and attempt. We confirmed that inappropriate WCB is associated with suicide ideation and attempt among Korean adolescents. Given the high incidence rate of suicide among adolescents and the adverse effect of inappropriate WCB, encouraging adolescents to control their weight in healthy ways is imperative.

Background. Psychiatric disorders are common in patients with cancer. The impact of both psychiatric disorders and psychiatric treatment on mortality in patients with cancer needs to be established. Materials and Methods. Nationwide claims data were analyzed. To investigate the association between psychiatric disorders and mortality, 6,292 male and 4,455 female patients with cancer who did not have a record of psychiatric disorders before cancer onset were included. To examine the association between psychiatric treatment and mortality, 1,467 male and 1,364 female patients with cancer were included. Incident psychiatric disorder and receipt of psychiatric treatment within 30 days from the onset of a psychiatric disorder were the main independent variables. Dependent variables were all-cause and cancer-related mortality. Cox proportional hazards regression with timedependent covariates was used.Results. The onset of psychiatric disorders was associated with a significantly increased risk of mortality in both male (all-cause hazard ratio [HR]: 1.55; cancer-related HR: 1.47) and female patients with cancer (all-cause HR: 1.50; cancerrelated HR: 1.44) compared with patients with cancer without psychiatric disorders. Both male and female patients who received psychiatric treatment within 30 days of diagnosis of a psychiatric disorder had a lower risk of cancerrelated mortality (males, HR: 0.73; females, HR: 0.71) compared with patients with cancer with psychiatric disorders who did not receive psychiatric treatment. Conclusion. Patients with cancer with newly diagnosed psychiatric disorders had a higher mortality rate. Among these, those who received psychiatric treatment showed lower rates of mortality. Thus, early detection and early treatment of psychiatric disorders in patients with cancer is needed. The Oncologist 2020;25:e733-e742 Implications for Practice: The current study supplements the body of evidence supporting the association of psychiatric disorders onset and treatment with cancer outcomes. Patients with cancer showed an increased risk of both all-cause and cancer-related mortality upon psychiatric disorder onset. Among patients with newly diagnosed psychiatric disorders, those who received psychiatric treatment showed lower cancer-related mortality. Thus, raising awareness of both the risk of psychiatric disorders and the positive effects of psychiatric treatment on cancer outcomes is necessary among patients with cancer, caregivers, and oncologists. Furthermore, it is necessary to adopt a multidisciplinary approach, encouraging patients with cancer to undergo a neuropsychological assessment of their mental health status and receive appropriate and timely psychological interventions.

Background The improvement in the survival rate of preterm infants has paradoxically raised the risk of morbidities in childhood. Our objectives were to assess the medical utilization and costs in preterm infants following discharge from the neonatal intensive care unit in the first 6 years of life. Methods We conducted a population-based study using the National Health Information Database (2011–2017) provided by the Korean National Health Insurance Service (NHIS). A total of 361,190 children born in Korea between January 1 and December 31, 2011 were divided into four groups according to the gestational age at birth: extremely preterm (less than 28 weeks), very preterm (28–31 weeks), moderate to late preterm (32–36 weeks), and full term (37–41 weeks). The cumulative number of outpatient visits, cumulative length of hospital stay, rate of hospital and intensive care unit admissions, and cumulative medical costs for inpatients and outpatients were compared for each gestational age group. Results Earlier gestational age was significantly associated with an increased risk of the cumulative number of outpatient visits, cumulative length of hospital stay, and rate of hospital and intensive care unit admissions for the first 6 years of life. The mean cumulative inpatient and outpatient costs per child significantly decreased with increasing gestational age. When assessed based on population size, the total cumulative medical costs were highest for moderate to late preterm children. Conclusion Earlier gestational age was strongly associated with increased healthcare resource utilization and medical costs. Our findings on the potential long-term socioeconomic impact on public health are expected to aid the development of future health care policies for preterm children.

BackgroundThis study aims to determine whether significant associations exist between the parents' country of birth and adolescent depressive symptoms in the early stages of a multicultural society.MethodsWe used data from the 2012–2016 Korea Youth Risk Behavior Web-based Survey, which included responses from 327,357 individuals. Participants were classified into groups according to their parent's country of birth. Logistic regression analysis was used to examine the significance of the associations.ResultsAdolescents whose parents were born abroad are more likely to have depressive symptoms (odds ratio [OR] = 1.68; 95% confidence interval [CI], 1.33–2.12) than adolescents whose parents were native Koreans. Respondents whose father was born in North Korea or Japan or Taiwan show greater odds of depressive symptoms than respondents whose parents were native Korean.ConclusionAdolescents whose parents were born abroad are more likely to have depressive symptoms. Multicultural family support policies should be implemented in consideration of the characteristics of the parents' country of birth.