Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
RCT	143 people with severe psoriasis	Proportion of people who reported adverse effects 82% with calcipotriol plus fumaric acid 79% with fumaric acid alone Absolute numbers not reported	OR 1.26 95% CI 0.53 to 2.96		Not significant