BACKGROUND: TV viewing and computer use are sedentary behaviors and recent surveys report that they are associated with obesity in children. Association of these activities with obesity or obesity related lifestyles was investigated in this study. METHODS: Using the database of questionnaires and physical check-ups among 4th to 6th grade elementary school students in Incheon, the association of television viewing and internet using time with obesity and obesity related factors (dietary habits, and physical activities) were investigated. A total of 2,750 students (1,100 normal weighted/1,650 overweight or obese) were included. RESULTS: In the multiple analyses of computer using time among the boys and girls in weekdays and weekends respectively, according to their obesity degree, except for overweight and obese boys in weekends (P<0.001), there were no significant differences examined. Multiple logistic regression revealed that children who watched TV more than 2 hours per day ate faster (OR 1.27), had breakfast more irregularly (OR 1.41) and ate vegetables more rarely (OR 1.53). The children who used computer more than 1 hour per day in weekdays were faster eaters (OR 1.38) and hardly ate fruits (OR 1.26) or vegetables (OR 1.60). In weekends, the children who spent time more than 90 minutes in the computer were faster to eat (OR 1.46), more snack eating (OR 1.22), less vegetable consuming (OR 1.59) and more obese (OR 1.46, 95%CI 1.24~1.73) compared to the others. CONCLUSION: TV viewing and computer use were associated with several obesity related lifestyles in children.
Breakfast ; Child ; Eating ; Fruit ; Humans ; Internet ; Life Style ; Logistic Models ; Obesity ; Overweight ; Risk Factors ; Snacks ; Television ; Vegetables ; Surveys and Questionnaires

Background: Hematologic malignancies have a relatively lower prevalence than major solid cancers, although the incidence of hematologic malignancies has significantly increased in recent years. However, understanding the current status of hematologic malignancy is significantly challenging because basic data regarding this malignancy are insufficient in the Korean population. Methods: From 2005 to 2015, the status of seven codes of hematologic malignancy, containing 24 subcodes defined using a classification defined by the Korean Classification of Disease-6, was analyzed. The number of new patients, crude incidence rate, prevalence rate, and age-standardized incidence rate were also investigated. Results were analyzed based on National Health Insurance Service (NHIS) data. Results: The number of new patients showed an overall increase over time and a rate of increase up to 56.7% for 10 years. The number of male patients was higher than that of female patients, with the majority of patients aged greater than 60 years. The incidence and prevalence rates have increased steadily. Conclusions Consistent with the previous studies, this study might be useful to understand the current status of hematologic malignancy and might contribute to the improvement of national public healthcare.

Background: Except for data in the Korea Hemophilia Foundation Registry, little is known of the epidemiology of congenital bleeding disorders in Korea. Methods: Data were obtained from the Korean Health Insurance Review and Assessment Service (HIRA) database. Results: From 2010 to 2015, there were 2,029 patients with congenital bleeding disorders in the Korean HIRA database: 38% (n = 775) of these patients had hemophilia A (HA), 25% (n = 517) had von Willebrand disease (vWD), 7% (n = 132) had hemophilia B (HB), and 25% (n = 513) had less common factor deficiencies. The estimated age-standardized incidence rate (ASR) of HA and HB was 1.78–3.15/100,000 and 0.31–0.51/100,000, respectively. That of vWD was 1.38–1.95/100,000. The estimated ASR of HA showed increase over time though the number of new patients did not increase. Most patients with congenital bleeding disorders were younger than 19 years old (47.8%), and most were registered in Gyeonggi (22.1%) and Seoul (19.2%). Conclusion This is the first nationwide population-based study of congenital bleeding disorders in Korea. This study provides data that will enable more accurate estimations of patients with vWD. This information will help advance the comprehensive care of congenital bleeding disorders. We need to continue to obtain more detailed information on patients to improve the management of these diseases.