Table 2.

Summary of this systematic review.

Sample size (n)		Gender(n)
<100	3	Men only	0
101–500	7	Women only	1
501–1,000	3	Men and Women	17
1,001–2,000	2	Undetermined	0
2,001–4,000	1	Region(n)
>4,001	2	Americas	2
Participants(n)		Asia	11
College student	18	European	4
Medical student	9	Africa	1
Non-medical student	9	Australia	0
Intervention type(n)
Improving understanding			5
Improving sleep quality			3
Physical activity			3
Other			8