Health Behavior and Social-Emotional Health Status of School-Aged Children According to their Experience with Atopic Dermatitis Diagnosis: Based on the 12th (2019) Panel Study on Korean Children

Atopic dermatitis (AD) is a chronic inflammatory skin disease that is common in children and is increasing worldwide. This study aimed to identify differences in children's health behavior and social-emotional health status based on AD diagnosis at late school age. For this purpose, we conducted a descriptive survey using the 12th Panel Study on Korean Children data obtained in 2019. The data were analyzed using descriptive statistics, the Rao-Scott χ2 test, and a t-test using a complex sample analysis. A total of 1412 11-year-old Korean children participated in the study, of whom an estimated 8.2% were diagnosed with AD. In the children diagnosed with AD, the transition from exclusive breastfeeding to mixed feeding was later than that in children without AD (F = 5.71, p = 0.024), and the prevalence of AD in their parents was higher (F = 6.97, p = 0.014). Regarding health behaviors, the children diagnosed with AD had a higher intake frequency of protein (F = 5.41, p = 0.028) and vegetables (F = 6.09, p = 0.020). Regarding social-emotional health, subjective health status (F = 3.94, p = 0.026) and friend relationships (F = 2.95, p = 0.007) were lower in the children diagnosed with AD. These results, as preliminary data for interventions for school-aged children with AD, suggest that the difficulties of children's peer relationships should be considered and dealt with in further interventions.

Prenatal PM2.5 exposure and vitamin D-associated early persistent atopic dermatitis via placental methylation

BACKGROUND

The effects of prenatal particulate matter with an aerodynamic diameter ranging from 0.1 μm to 2.5 μm (PM_2.5) and vitamin D on atopic dermatitis (AD) phenotypes have not been evaluated. DNA methylation and cord blood (CB) vitamin D could represent a plausible link between prenatal PM_2.5 exposure and AD in an offspring.

OBJECTIVE

To determine the critical windows of prenatal PM_2.5 exposure on the AD phenotypes, if vitamin D modulated these effects, and if placental DNA methylation mediated these effects on AD in offspring.

METHODS

Mother-child pairs were enrolled from the birth cohort of the Cohort for Childhood Origin of Asthma and allergic diseases (COCOA) study. PM_2.5 was estimated by land-use regression models, and CB vitamin D was measured by chemiluminescence immunoassay. AD was identified by the parental report of a physician's diagnosis. We defined the following 4 AD phenotypes according to onset age (by the age of 2 years) and persistence (by the age of 3 years): early-onset transient and persistent, late onset, and never. Logistic regression analysis and Bayesian distributed lag interaction model were used. DNA methylation microarray was analyzed using an Infinium Human Methylation EPIC BeadChip (Illumina, San Diego, California) in placenta.

RESULTS

PM_2.5 exposure during the first trimester of pregnancy, especially during 6 to 7 weeks of gestation, was associated with early-onset persistent AD. This effect increased in children with low CB vitamin D, especially in those with PM_2.5 exposure during 3 to 7 weeks of gestation. AHRR (cg16371648), DPP10 (cg19211931), and HLADRB1 (cg10632894) were hypomethylated in children with AD with high PM_2.5 and low CB vitamin D.

CONCLUSION

Higher PM_2.5 during the first trimester of pregnancy and low CB vitamin D affected early-onset persistent AD, and the most sensitive window was 6 to 7 weeks of gestation. Placental DNA methylation mediated this effect.

The Pittsburg Sleep Quality Index (PSQI) and Associated Factors in Middle-school Students: A Cross-sectional Study

Purpose

The purpose of this study was to evaluate the current level of sleep quality among Korean middle-school students using the Pittsburg Sleep Quality Index (PSQI), and to analyze the factors influencing sleep quality.

Methods

The study used a descriptive cross-sectional design and a self-report questionnaire. The participants were 744 middle-school students. The questionnaire included the PSQI and health-related questions, such as the types of diseases they had been diagnosed with and the frequency of hospital admissions. The data were analyzed using the independent t-test, analysis of variance, Pearson correlation coefficients, and linear multiple regression.

Results

The global PSQI score was 4.21, which indicated good sleep quality. The major factors that were associated with the sleep quality of middle-school students were the number of diseases they had been diagnosed with (β=.54, p=.001) and atopic dermatitis (β=.32, p=.001). In addition, asthma and the frequency of hospital admissions were significant factors influencing each component of the PSQI.

Conclusion

The findings from this study suggest that sleep quality was associated with several health-related factors. Thus, nurses, school nurses, and nursing researchers may need to assess the health-related factors associated with adolescents' sleep quality as part of efforts to improve their sleep quality.