Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
Systematic review	People with psoriasis (severity not reported), number of people in analysis not reported 9 RCTs in this analysis	Local adverse effects 3–8 weeks with vitamin D derivatives with potent topical corticosteroids	ARI +10% 95% CI –2% to +21%		Not significant
Systematic review	People with psoriasis (severity not reported), number of people in analysis not reported	Lesional or perilesional irriation with calcipotriol with potent topical corticosteroids	Significantly greater rate with calcipotriol NNH 10 95% CI 6 to 34	Effect size not calculated	potent topical corticosteroids