Comparison 9. Topical sulphur versus placebo.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
9.1 Participants' global self‐assessment of acne improvement (numerical point system defined by investigator, high=well)	1		Other data	No numeric data
9.1.1 medium term	1		Other data	No numeric data
9.2 Withdrawal for any reason	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
9.2.1 medium term	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
9.3 Change in lesion counts (scores, high = well)	1		Other data	No numeric data
9.4 Physicians' global evaluation of acne improvement	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
9.4.1 moderate to good improvement (medium term)	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
9.5 Physicians' global evaluation of acne improvement (numerical point system defined by investigator, high = well)	1		Other data	No numeric data
9.5.1 medium term	1		Other data	No numeric data
9.6 Minor adverse events ‐ erythema and drying	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected