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Pressure relieving support surfaces (PRESSURE) trial: cost effectiveness analysis [with consumer summary] |
Iglesias C, Nixon J, Cranny G, Nelson EA, Hawkins K, Phillips A, Torgerson D, Mason S, Cullum N, PRESSURE Trial Group |
BMJ 2006 Jun 17;332(7555):1416-1420 |
clinical trial |
5/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: Yes; Baseline comparability: No; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: Yes; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed* |
OBJECTIVE: To assess the cost effectiveness of alternating pressure mattresses compared with alternating pressure overlays for the prevention of pressure ulcers in patients admitted to hospital. DESIGN: Cost effectiveness analysis carried out alongside the pressure relieving support surfaces (PRESSURE) trial; a multicentre UK based pragmatic randomised controlled trial. SETTING:11 hospitals in six UK NHS trusts. PARTICIPANTS: Intention to treat population comprising 1,971 participants. MAIN OUTCOME MEASURES: Kaplan Meier estimates of restricted mean time to development of pressure ulcers and total costs for treatment in hospital. RESULTS: Alternating pressure mattresses were associated with lower overall costs (Great British Pounds 283.6 per patient on average, 95% confidence interval -377.59 to 976.79) mainly due to reduced length of stay in hospital, and greater benefits (a delay in time to ulceration of 10.64 days on average, -24.40 to 3.09). The differences in health benefits and total costs for hospital stay between alternating pressure mattresses and alternating pressure overlays were not statistically significant; however, a cost effectiveness acceptability curve indicated that on average alternating pressure mattresses compared with alternating pressure overlays were associated with an 80% probability of being cost saving. CONCLUSION: Alternating pressure mattresses for the prevention of pressure ulcers are more likely to be cost effective and are more acceptable to patients than alternating pressure overlays.
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