Could there be other factors affecting the outcome? Hydrochloroquine seems to have been dismissed, but watching this video he makes a a good case for it workin

Could there be other factors affecting the outcome? Hydrochloroquine seems to have been dismissed, but watching this video he makes a a good case for it working at low dose - it seems like a lot of the trials involved too high a dose. (He talks about a relatively large scale study in Belgian hospitals). There seems to have been multiple studies done, some giving good results some not. I am curious if the ones at the lower dosage were separated out would they all gave more positive results. Unfortunately I don't have time to check through them all myself. https://www.youtube.com/watch?v=2uzXHnUViro&feature=emb_logo https://www.youtube.com/watch?v=2uzXHnUViro&feature=emb_logo