Table 3.

Baseline and follow-up assessments.

For topic	Instrument	References
COVID-19	COVID-19: risk perception and Coping strategies	Gerhold (142).
Diet and nutrition	Short survey instruments for children's diet and physical activity: the evidence	SAX Institute (143).
Sleep	Insomnia severity index: ISI-7	Bastien et al. (144).
Anxiety	General anxiety disorder: GAD-7	Spitzer et al. (145).
Loneliness	UCLA loneliness scale: ULS-6	Neto (146).
Physical activity	Single-item physical activity measure	Milton et al. (147)
	International physical activity questionnaire short form	YOUTHREX (148) and Booth (149)
Mental resources	Brief resilience coping scale	Sinclaire and Wallston (150).
Wellbeing	Patient health questionnaire: PHQ-2	Kronke et al. (151).