Table 3.

Economic evaluation of alternating pressure overlays compared with alternating pressure mattresses for the prevention of pressure ulcers in patients admitted to hospital

Overlay-mattress	Mean (95% bias corrected confidence interval)
Base case analysis:
Differential health benefit (days)	-10.64 (-24.40 to 3.09)
Differential cost (£)	283.60 (-377.59 to 976.79)
Sensitivity analyses:
Differential rental cost (£)	220.33 (-459.85 to 927.00)
Differential cost for five year life span (£)	332.95 (-325.27 to 1020.77)
Differential cost for seven year life span (£)	341.76 (-315.92 to 1028.63)