Fig. 4
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12909-022-03314-w/MediaObjects/12909_2022_3314_Fig4_HTML.png)
Responses to survey questions regarding the availability of study sources combined of students in the control group (clear dots) on T0 and T1 and students in the video groups (grey dots) on T0 and T1 (median + IQR). Scores in the video group increased significantly more than those in the control group (p = 0.001) as is represented by the dotted line between medians