Abstract
Aim: To perform a systematic review and metanalysis, comparing outcome and cost of stroke care in a stroke unit (SU) versus conventional care (CC). Secondary aim was to compare cost effectiveness of different SU subtypes. Methods: Pubmed search was performed for “Stroke Unit” among all English language articles from 01/01/1996 to 01/01/2011. Only articles from developed countries, reporting the length of stay (LOS) and/or cost and outcomes for ischemic stroke were included. Studies wherein data was collected before 01/01/1996, articles only on rehabilitation units, and all systematic reviews were excluded. LOS was taken as a surrogate marker of stroke care cost in studies wherein direct care costs were not reported. Non-QALY outcomes were converted to QALYs using reported logistic regressions. Ratios less than $50,000/QALY were considered cost effective while greater than $100,000 /QALY were considered non-cost effective. All cost were reported in 2010 US$. Result: A total of 5,537 articles in Pubmed were studied, of which 19 studies met the inclusion criteria. LOS for patients managed at SU ranged from 9.2-32.3 days versus 8-35.3 days for CC units and average incremental QALYs between them were 0.09. The average incremental cost/QALY was $41,204.37. The average cost/QALY for different types of SU were $19,428.64 for Acute only SU (A SU), $44,228.81 for Acute+Rehabilitation SU (A+R SU), $29,145.93 for Acute+Rehabilitation+Early Supported Discharge (A+R+ESD) SU and $20,460.56 for SU with Continuous monitoring (SU CM). In comparison to an A SU, SU CM and A+R+ESD SU were cost effective alternatives (ICER SU CM estimated at $25,120.89, ICER A+R+ESD SU estimated at $24,574.59). Conclusion: Stroke Units are cost effective when compared to the conventional systems of care. Acute + rehab SU with early supported discharge appears to be the most cost effective model amongst different subtypes of SU.
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