Background The COVID-19 pandemic represents a global health crisis. The Shanghai municipal government in China implemented strict and comprehensive pandemic control strategies in the first half of 2022 to eliminate a wave of COVID-19 infection. The pandemic and the resulting government responses have led to abrupt changes to families’ daily lives, including the mental health of children and adolescents. Objective The aim of this paper is to examine the impact of COVID-19 exposure and the stringent lockdown measures on the daily life and mental health of children and adolescents and to provide suggestions on maintaining their mental health when similar public health emergencies occur in the future. Methods In this cross-sectional study, an anonymous survey was distributed online in May 1-15, 2022, in Shanghai. Individuals were eligible to participate if they were currently the caregiver of a child or adolescent (aged 4-17 years). Outcomes were psychosocial functioning of children and adolescents, as reported by parents, using the Pediatric Symptom Checklist-17. COVID-19 exposure and life changes were also reported. Multivariate logistic regression was used to analyze risk factors for poor psychosocial functioning. Results In total, 2493 valid questionnaires were analyzed. The rate of positive scores on the global Pediatric Symptom Checklist-17 scale was 16.5% (n=411). Internalizing, attention, and externalizing problem subscale positivity rates were 17.3% (n=431), 10.9% (n=272), and 8.9% (n=221), respectively. Caregivers reported that 64.2% (n=1601) and 20.7% (n=516) of the children’s interactions with friends or peers and parents deteriorated, respectively. Compared with male caregivers, female caregivers were less likely to report psychosocial problems in children and adolescents (adjusted odds ratio [aOR] 0.68; 95% CI 0.53-0.88). Older children and those with lower COVID-19 Exposure and Family Impact Scales scores were less likely to have psychological problems (aOR 1.15; 95% CI 1.10-1.21). Compared with children with screen times <1 hour per day for recreation, those using screens for >3 hours had higher odds of psychological distress (aOR 2.09; 95% CI 1.47-1.97). Children who spent 1-2 hours exercising and had better interactions with friends or peers and parents showed a trend toward lower odds of psychological problems. Children and adolescents with worse sleep compared with preclosure were more likely to have psychological problems. Conclusions The prevalence of psychosocial problems among children and adolescents is relatively high. Being young, having more COVID-19 exposure, and having more screen times (>3 h/day), less exercise time (<30 min), worse sleep, and deteriorated interactions with friends or peers and parents were risk factors for poor psychosocial functioning. It is necessary for governments, communities, schools, and families to take appropriate countermeasures to reduce the negative impact of the stringent control measures on caregivers’ parenting and psychosocial functioning of children and adolescents.

Background The focus of students’ health concerns has gradually progressed from the single factor of physical health to comprehensive health factors, and the physical and mental health of students are now generally considered together. This study focuses on exploring the status of junior high school students’ physical health and their subjective health assessment with the major societal factors that affect students’ lives: School Life and Family involvement. In addition, we explore the main factors influencing students’ subjective health. Methods A cross-sectional survey was conducted with 190 Tibetan junior high school students in the Maozhuang Township. The intentional sampling was used to choose the research object. The structured questionnaire comprised four parts, namely social and demographic information, family condition, school life, and subjective health quality which was assessed by PROMIS (Chinese version of the Pediatric Patient-Reported Outcomes Measurement Information System). Result The average height and weight of boys and girls are statistically different (p-values of 0.026 and 0.044, respectively), but there is no statistically significant difference in BMI (Body Mass Index) between boys and girls (p-value of 0.194). The average values of the five dimensions of depression, anger, anxiety, fatigue, and peer relationships in the PROMIS of the research subjects were 58.9 ± 5.3, 53.3 ± 8.0, 58.1 ± 7.3, 52.8 ± 8.0, 39.3 ± 6.6. In the demographic dimension, the grade was the main factor influencing anger (p < 0.01) and fatigue (p < 0.01), while gender was related to peer relationships (p = 0.02). In the family dimension, the father’s educational level was related to peer relationships (p = 0.05), while the family financial situation was related to depression (p = 0.01). In the school life dimension, relationship with classmates was found to affect anger (p = 0.05), while homework was related to anxiety (p = 0.02) and fatigue (p = 0.05). Conclusion the physical health index BMI and subjective health evaluation of students are worse than students of more developed areas in China. Their family environment and school life all have varying degrees of impact on the five subjective health outcomes. There are differences in gender and grade level. The government and society need to pay more attention to the physical and mental health of students in remote and underdeveloped areas and improve their health through a student nutrition plan and the establishment of mental health offices.