Interventions	Pairwise meta‐analysis results, RR (95% CI)	NMA results, RR (95% CI)	Difference between two types of analysis results
Alternating pressure (active) air surfaces vs foam surfaces	0.63 (0.34 to 1.17)	0.63 (0.42 to 0.93)	No statistical difference
Alternating pressure (active) air surfaces vs reactive air surfaces	1.61 (0.90 to 2.88)	1.35 (0.82 to 2.20)	No statistical difference
Reactive water surfaces vs alternating pressure (active) air surfaces vs	0.83 (0.35 to 1.92)	0.69 (0.28 to 1.70)	No statistical difference
Reactive fibre surfaces vs alternating pressure (active) air surfaces	1.11 (0.84 to 1.47)	1.14 (0.66 to 1.98)	No statistical difference
Reactive gel surfaces followed by foam surfaces vs alternating pressure (active) air surfaces	4.55 (1.28 to 16.67)	4.60 (1.18 to 17.86)	No statistical difference
Reactive air surfaces vs foam surfaces	0.42 (0.18 to 0.96)	0.46 (0.29 to 0.75)	No statistical difference
Reactive fibre surfaces vs foam surfaces	0.85 (0.47 to 1.56)	0.71 (0.38 to 1.34)	No statistical difference
Bedcare surfaces vs foam surfaces	1.79 (0.62 to 5.26)	1.80 (0.49 to 6.58)	No statistical difference
Reactive water surfaces vs reactive air surfaces	2.33 (0.22 to 25.00)	0.93 (0.35 to 2.47)	No statistical difference
Reactive gel surfaces vs reactive air surfaces	0.80 (0.36 to 1.79)	1.02 (0.48 to 2.16)	No statistical difference
Alternating pressure (active) air surfaces or RIK overlay vs reactive air surfaces vs	3.03 (0.64 to 14.29)	3.00 (0.53 to 16.87)	No statistical difference
Standard hospital surfaces vs reactive water surfaces	2.86 (1.25 to 6.67)	1.50 (0.78 to 2.88)	No statistical difference