Table 3.

Target population of included reviews.

Included Reviews	Target Population
Alqahtani & Orji [32] Bakker et al. [33] Balcombe et al. [34] Carter et al. [36] Denecke et al. [37] Drissi et al. [38] Ellis et al. [39] Gould et al. [40] Hwang et al. [42] Kaveladze et al. [43] Lal & Adair [44] Lehtimaki et al. [24] Liverpool et al. [25] Murphy et al. [45] Oyebode et al. [46] Struthers et al. [29] Torous et al. [14] Wies et al. [50] Zhang et al. [30]	No restriction on the type of mental health condition
Binhadyan et al. [35]	ADHD
Borghouts et al. [18] Eisenstadt et al. [15] Firth et al. [19] Garrido et al. [20] Harith et al. [41] Lattie et al. [22] Leech et al. [23] Nicholas et al. [26] Petrovic & Gaggioli [47] Six et al. [28] Thach [48] Thach [49]	Anxiety/Depression/Stress/Well-being
Chan & Honey [9] Henson et al. [12]	Anxiety, Depression, Schizophrenia spectrum and psychotic disorders
Larsen et al. [21]	Suicide/Self-harm
Simblett et al. [27]	Post-traumatic stress disorder (PTSD)