Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Psoriasis severity
RCT	287 people with mild to moderate psoriasis In review	Mean reduction in symptom severity score 8 weeks 5 with calcipotriol twice daily 4 with tacalcitol once daily	P = 0.0003	Effect size not calculated	calcipotriol
RCT	144 people with bilateral plaque psoriasis involving less than 20% of the body surface	Psoriasis severity scale from 0–24 8 weeks with calcipotriol with maxacalcitol Absolute results reported graphically	Reported as not significant P value not reported		Not significant
RCT	250 people with mild to moderate chronic plaque psoriasis	Mean global improvement score 12 weeks 2.3 with calcitriol 2.2 with calcipotriol Absolute results reported graphically	Reported as not significant P value not reported		Not significant