Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Psoriasis severity
RCT	143 people with severe psoriasis	Change in PASI score 13 weeks –76% with calcipotriol plus fumaric acid –52% with fumaric acid alone Absolute numbers not reported	Mean difference –24% 95% CI –34% to –14%	Effect size not calculated	calcipotriol plus fumaric acid