Table 1.

Summary of included studies

Characteristics	No. of studies	Percentages (%)
Total sample size	23
Age group
Mixed: children/adolescents and adults	11
Only children and adolescents (6–20 yrs.)	12
Region
Asia	15	65.2
Europe	4	17.4
North America	2	8.7
Africa	2	8.7
Study design
Cross-sectional	20	87.0
Longitudinal	3	13.0
Data collection period
Jan – Apr 2020	16	69.6
May – Aug 2020	4	17.4
After Aug 2020	1	4.3
Not reported	2	8.7
Theoretical backdrop reported
Health Belief Model	4	17.4
Self-determination Theory	2	8.7
Ecological Model	1	4.3
Integrated Cognitive Antisocial Potential Theory	1	4.3
Not reported	15	65.2
Preventive behaviors measured
Multiple preventive behaviors	18	78.2
Single preventive behavior (physical distancing, hand hygiene, face mask wearing)	7	30.4
Individual demographics measured
Age	7	58.3
Gender	12	100.0
Education level (e.g., primary/secondary/grade)	4	33.3
Others (e.g., ethnicity)	2	16.7
Psychosocial factors measured
Attitude (e.g., perceived benefits/ barriers)	4	33.3
Knowledge	4	33.3
Risk perception (e.g., perceived susceptibility/severity)	3	25.0
Social interaction (e.g., trust, moral, norms)	4	33.3
Psychological well-being (e.g., depression, anxiety)	2	16.7
Others (e.g., intention, self-efficacy, motivation, personality)	4	33.3
Social environmental factors measured
Family economic status	5	41.7
Residence (e.g., rural/urban)	3	25.0
Parents education background	4	33.3
Community setting and lockdown policy	4	33.3
Others (social media, parents birth location)	3	25.0
Study quality
High	7	30.4
Good	12	52.2
Moderate	4	17.4
Poor	0	0