Comparison 3. Comparisons between alternative foam supports.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Pressure ulcer incidence	5		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
1.1 Alternative foam vs standard foam	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.2 Foam mattress vs foam overlay	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.3 Solid foam vs convoluted foam	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.4 Transfoam mattress vs Transfoamwave mattress	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.5 Cold foam mattress vs cold foam mattress and static air overlay	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]