Exploring the cost–utility of stratified primary care management for low back pain compared with current best practice within risk-defined subgroups
Annals of Rheumatic Diseases, 05/29/2012
Whitehurst DGT et al. – Compared with current best practice, stratified primary care management for low back pain provides a highly cost–effective use of resources across all risk–defined subgroups.
Within a cost–utility framework, the base–case analysis estimated the incremental healthcare cost per additional quality–adjusted life year (QALY), using the EQ–5D to generate QALYs, for each risk–defined subgroup.
Uncertainty was explored with cost–utility planes and acceptability curves.
Sensitivity analyses were performed to consider alternative costing methodologies, including the assessment of societal loss relating to work absence and the incorporation of generic (ie, non–back pain) healthcare utilisation.
The stratified management approach was a cost–effective treatment strategy compared with current best practice within each risk–defined subgroup, exhibiting dominance (greater benefit and lower costs) for medium–risk patients and acceptable incremental cost to utility ratios for low–risk and high–risk patients.
The likelihood that stratified care provides a cost–effective use of resources exceeds 90% at willingness–to–pay thresholds of £4000 ( 4500; $6500) per additional QALY for the medium–risk and high–risk groups.
Patients receiving stratified care also reported fewer back pain–related days off work in all three subgroups.
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