Change in lesion counts (scores, high = well)
Study	Time points	Sulphur‐benzoyl peroxide	Benzoyl peroxide	Sulphur	Placebo	P value
Vasarinsh 1969	Numerical point system defined by investigator (high=well): comedone‐pustule (medium term)	0.81	0.55	‐0.70	0.00	not reported, the author did not state whether the difference is statistical significant.
	Numerical point system defined by investigator (high=well): papule‐cyst (medium term)	0.91	0.69	0.30	0.53	not reported, the author did not state whether the difference is statistical significant.