4. PASI‐50 (between‐participant data).
| Study | Time point | Intervention | Comparators | P value1 | ||||
| Description | A/R | Proportion | Description | A/R | Proportion | |||
| Brockow 2007a | Session 18 (six weeks) | Salt bath + UVB | 79/81 | 86% (68 of 79) | UVB only | 71/79 | 54% (38 of 71) | < 0.001 |
| Brockow 2007b | Session 18 (six weeks) | Salt bath + UVB | 79/81 | 73% (58 of 79) | UVB only | 64/83 | 50% (32 of 64) | 0.0053 |
| Schiener 2007 | Eight weeks | Salt bath + UVB | 299/310 | 74.9% (224 of 299) | Tap water + UVB | 285/301 | 60.7% (173 of 285) | 0.0003 |
| Psoralen bath + UVA | 305/321 | 78.4% (239 of 305) | 0.3369 |
1: Estimated by review authors using Easy Fisher Exact Test Calculator (Social Science Statistics 2018); statistically signifiant P values (P < 0.05) in bold font.
A/R: number of analysed/randomised people; n.r.: not reported; PASI‐50: Participants have achieved a 50% or more reduction in their Psoriasis Area and Severity Index score from baseline; UVB: artificial ultraviolet B light