Sensitivity Analysis
A one-way sensitivity analysis was undertaken to assess the extent of potential
changes in the main cost parameters and outcomes of the treatment using the mean
difference, lower and upper bounds of the confidence intervals for the Barthel
score (Table 3) and the Action Research Arm Test (Incremental cost of intervention using the Barthel score.Incremental cost of intervention using the Action Research Arm Test
(ARAT) score.When the base case results of the costs of the intervention are used with the
base case results of the Barthel scores, the cost per unit of improvement was
−£1240 indicating that the intervention costs less and is more effective.When the lower 5% bound of net cost (−£5867) is used with the upper 95% bound of
net utility (3.297), then the intervention is again seen as costing less and
more effective (−£1780) (see Table 3). When the base case results of the costs
of the intervention are used with the base case results of the Action Research
Arm Test scores, the cost per unit of improvement was −£450 indicating that the
intervention costs less and is more effective.When the lower 5% bound of net cost (−£5867) is used with the upper 95% bound of
net utility (10.71), then the intervention is again seen as costing less and
more effective (−£548) (see 