Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Psoriasis severity
RCT	100 people	Proportion of people clear of psoriasis at the end of treatment time of assessment not reported 28/50 (56%) with narrowband UVB 20/50 (40%) with selective broadband UVB	OR 2.00 95% CI 0.87 to 4.62		Not significant