Library Home | Reset filters
Select one or more filter options and click search below.
Reset filters
AUTHOR(S) Luoming Huang; Xuelan Chen; Jiajia Lin (et al.)
The studies on the association between sleep duration and myopia are limited, and the evidence is inconsistent. This study aimed to evaluate the association between sleep duration and myopia, cycloplegic spherical equivalent (SE) and axial length (AL) among Chinese children during the Corona Virus Disease 2019 (COVID-19) pandemic. The study was a cross-sectional study on Chinese children aged 6–18 years. The comprehensive ophthalmic examinations for children included cycloplegic SE, AL, and standardized questionnaires. The questionnaire included sleep duration, parental myopia, outdoor time, and continuous near work duration without breaks. Myopia was defined as SE ≤-0.50 diopters (D).
AUTHOR(S) Shujuan Yang; Wanqi Yu; Peng Jia
The youths’ study and physical activity (PA) patterns may have been affected by lockdown measures due to COVID-19. This study aimed to reveal how youths’ study and PA patterns had changed after implementing and lifting COVID-19 lockdown in China. The COVID-19 Impact on Lifestyle Change Survey (COINLICS) was used, where 10,082 youth participants have voluntarily reported their study and PA patterns in the three periods before, during, and after COVID-19 lockdown. PA was measured as the weekly frequency of engaging in active transport for commuting/errands, leisure-time walking, leisure-time moderate-/vigorous-intensity physical activity (MVPA), and moderate-/vigorous-intensity housework (MVH); study patterns were measured as the daily average study time and the major study modes.
AUTHOR(S) Zhuo Wang; Binxue Hong; Yanyan Zhang (et al.)
Recent studies have shown that the qualities of children and adolescents’ positive youth development (PYD) enable them to cope with developmental challenges in an adaptive manner and maintain healthy functioning. During the COVID-19 pandemic, there is still a lack of reporting on changes in children and adolescents’ PYD qualities and Internet addiction and their relationship. This study investigated the association between PYD qualities and Internet addiction among the children and adolescents who have experienced the COVID-19 lockdown. A school-based cohort survey was launched in December 2019 (Wave 1, before COVID-19 lockdown) and followed up in June 2020 (Wave 2, after COVID-19 lockdown). The Chinese PYD scale (80 items, scoring 80–480) and Young’s Internet addiction test (20 items, scoring 20–100) were used to evaluate the children and adolescents’ PYD qualities and the degree of their Internet addiction, respectively. Cross-sectional regressions, longitudinal regressions, and cross-lagged panel model were used to examine the association between PYD qualities and Internet addiction.
AUTHOR(S) Kechun Zhang; Xue Liang; Karen Lau Wa Tam (et al.)
AUTHOR(S) Muzi Yuan; Xiaohua Bian; Junsheng Liu (et al.)
AUTHOR(S) Li Zhao; Xiang Li; Qin Yang (et al.)
The COVID-19 pandemic and related prevention policies, such as home quarantine or online courses, could increase the risks of experiencing internet addiction and mental health problems among Chinese adolescents. There is a lack of longitudinal evidence to show the association between internet addiction symptoms and psychological consequences (e.g., depressive and anxiety symptoms). This study aimed to explore the association between internet addiction and depressive and anxiety symptoms before and during the coronavirus disease 2019 (COVID-19) pandemic. An effective sample of 7,958 Chinese adolescents was recruited for this two-wave longitudinal survey conducted over a six-month interval. All participants completed two-wave surveys before and during the COVID-19 pandemic. A longitudinal cross-lagged path model was used to analyze the associations between internet addiction and depressive and anxiety symptoms after controlling for four covariates (i.e., age, sex, minority, and COVID-19 influence).
AUTHOR(S) Jingyi Fan; Chuchu Ye; Yuanping Wang (et al.)
AUTHOR(S) Jiaxin Li; Xinyi Huang; Xinyu Lei (et al.)
AUTHOR(S) Xiang Long; Xing‑Ying Li; Hong Jiang (et al.)
Knowledge on the impact of the temporary kindergarten closure policy under COVID-19 in 2020 on childhood overweight and obesity is inadequate. We aimed to examine differences in rates of overweight and obesity from 2018 to 2021 among kindergarten children aged 3–7 years. Overweight was defined as body mass index (BMI) > 1 standard deviation (SD) for age and sex, and obesity was defined as BMI > 2 SD for age and sex. Generalized linear mixed modeling was used for analysis.
AUTHOR(S) Kuiliang Li; Lei Ren; Zhengzhi Feng
AUTHOR(S) Yanhui Dong; Catherine Jan; Li Chen (et al.)
This paper aimed to estimate the effects of school closures and associated lifestyle changes on myopia in Chinese children and adolescents during the coronavirus disease 2019 (COVID-19) pandemic. Two cross-sectional surveys recruited 14,296 Chinese students aged 7 to 18 years in November 2019 and June 2020 from which an open cohort study (nested queue design) was derived and used to assess myopia prevalence, incidence, and progression rates (defined as students with progression in myopia severity at the second survey wave among those with myopia at baseline). The severity of myopia was determined by measurements of visual acuity (<5.0) and noncycloplegic refraction (spherical equivalent <−0.50 diopters). Twenty-three myopia-influencing factors were divided into three categories: eye-use habits, lifestyle, and family and subjective factors. Responses to each of these 23 factors were labeled as either positive or negative options and then combined to generate a comprehensive score.
AUTHOR(S) Weilin Xu; Martin Dijst; Yanwei Chai
AUTHOR(S) Yizhen Ren; Shengqi Zou; Hui Wang (et al.)
It is yet to be clarified if and how parenting stress was linked to adolescent depressive symptoms during the pandemic. This study adopted an interdependent approach to examine the relationship between parenting stress and adolescent depressive symptoms in Chinese families. It then examined the mediating effects of overt and covert coparenting conflict behaviors. As a national survey, data were obtained from different regions in China. Fathers, mothers, and adolescents from 1031 families participated in this study. The fathers and mothers reported parenting stress; the adolescents rated their fathers and mothers’ overt and covert coparenting conflict behaviors and their own depressive symptoms.
AUTHOR(S) Wei Pan; Jiang Lin; Li Zheng (et al.)
Myopic shift had been observed during the COVID-19 lockdown in young school children. It remains unknown whether myopic shift is accompanied with increase in axial length. This study aimed to evaluate the impact of the COVID-19 lockdown on myopia and axial length of school children in China by comparing them before, during and after the lockdown. In this population-based cross-sectional study, school-based myopia screenings were conducted in the Fall of 2019, 2020, and 2021 (representing before, during and after COVID-19 lockdown respectively) in Chengdu, China. Myopia screenings were performed on 83,132 students aged 6 to 12 years. Non-cycloplegic refractive error was examined using NIDEK auto-refractor (ARK-510A; NIDEK Corp., Tokyo, Japan) and axial length was measured using AL-Scan (NIDEK Corp., Tokyo, Japan). Spherical equivalent (SER, calculated as sphere+ 0.5*cylinder), prevalence of myopia (SER ≤ -0.50 D), and axial length were compared across 3 years stratified by age.
AUTHOR(S) Yundi Ma; Jingjing Ren; Yang Zheng (et al.)
To evaluate Chinese parents' willingness to vaccinate their children against COVID-19, identify its predictors, and provide a reference for raising the COVID-19 vaccination rate for children. PubMed, Cochrane Library, Embase, and the databases in Chinese, including CNKI, WanFang, VIP, CBM, were searched from December 2019 to June 2022, and citation tracking was used to identify relevant studies. To calculate the rate with 95% confidence intervals (CI), a random-effects model was used. To explore sources of heterogeneity, sensitivity analysis and subgroup analysis were conducted. This analysis was registered on PROSPERO (CRD42022346866) and reported in compliance with the PRISMA guidelines.
UNICEF Innocenti's Children and COVID-19 Library is a database collecting research from around the world on COVID-19 and its impacts on children and adolescents.
Subscribe to updates on new research about COVID-19 & children
Check our quarterly thematic digests on children and COVID-19
COVID-19 & Children: Rapid Research Response