Comparison 3. Waterlow risk assessment compared with pressure ulcer risk assessment using clinical judgement.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Pressure ulcer incidence	1	821	Risk Ratio (M‐H, Fixed, 95% CI)	1.10 [0.68, 1.81]
2 Pressure ulcer severity ‐ Stage 1	1	821	Risk Ratio (M‐H, Fixed, 95% CI)	1.05 [0.58, 1.90]
3 Pressure ulcer severity ‐ Stage 2	1	821	Risk Ratio (M‐H, Fixed, 95% CI)	1.25 [0.50, 3.13]