4. Overview of studies on irradiation with UV light: investigator‐rated good/excellent control.
| Study | Comparison | Investigator‐rated good/excellent control in RR (95% CI) | Comment |
| Bayerl 1999 | UVB versus no UVB | No data regarding the primary outcome investigator‐rated good/excellent control | ‐ |
| Sjövall 1987 | Local UVB versus placebo | RR 2.0 (95% CI 0.26 to 15.6) | ‐ |
| Sjövall 1987 | Local UVB hand versus whole body + hand UVB | RR 2.2 (95% CI 0.83 to 5.8) | ‐ |
| Sjövall 1987 | Local UVB hand versus whole body versus placebo | RR 3.67 (95% CI 0.90 to 14.97) | ‐ |
| van Coevorden 2004a | Oral PUVA versus topical bath PUVA | No data regarding the primary outcome investigator‐rated good/excellent control | ‐ |
| Grattan 1991 | Topical PUVA versus UVA | No data regarding the primary outcome investigator‐rated good/excellent control | Within‐patient study |
| Polderman 2003 | UVA‐1 versus placebo | No data regarding the primary outcome investigator‐rated good/excellent control | ‐ |
| Brass 2015 | Local NB‐UVB versus topical PUVA | RR 0.50 (95% CI 0.22 to 1.16) | ‐ |
| Sezer 2007 | Local NB‐UVB versus topical PUVA | NB‐UVB was effective in 2/12 hands and topical PUVA was effective in 1/12 hands | Within‐patient study |
| Tzaneva 2009 | Oral PUVA versus bath PUVA | No data regarding the primary outcome investigator‐rated good/excellent control | ‐ |
| Adams 2007 | UVA‐1 versus topical cream PUVA | No data regarding the primary outcome investigator‐rated good/excellent control | Within‐patient study |
| Said 2010 | Local UVA‐1 versus topical betamethasone‐valerate cream | No data regarding the primary outcome investigator‐rated good/excellent control | ‐ |
CI: confidence interval.
RR: risk ratio.
NB‐UVB: narrow‐band ultraviolet B.
PUVA: psoralen + ultraviolet A.
UVB: ultraviolet B.
UVA‐1: a subtype of ultraviolet A.