Proposed interpretation/application | Evidence of validity or activities to obtain this evidence |
---|---|
Interpretations/applications applied to groups - supported through initial development processes | |
Describe the burden of low back pain on a set of scales that reflects the full range of the experience of people with low back pain | Thorough, grounded identification of the range of issues that contribute to low back pain burden |
 | Iterative process of organizing these into domains and potential scales |
 | Comparison with interview data at a number of stages of development |
Quantify variations in the effects of low back pain across a broad range of sufferers on a range of scales | Cluster analysis to identify score profiles and qualitative confirmation of these |
 | Tests of structural invariance across groups |
Interpretations/applications applied to groups - supported through subsequent applications of the tool a | |
Describe the relative importance of different domains of low back pain burden in comparing one population with another (for example, needs identification) | Accumulated evidence about what is a high average score and what is a low average score for each scaleb |
 | Establishment of whole of population norms and subgroup norms |
 | Tests of structural invariance |
Validly assess changes in low back pain burden in a group over time or as a result of interventions | Application for a range of evaluation purposes including comparison with other subjective and objective indicators of change |
 | Development of estimates of meaningful change |
Interpretations/applications applied to individuals | |
Assess the relative needs of an individual with low back pain across a range of domains | Attention to item scaling properties during psychometric development |
 | Comparison with other subjective and objective indicators of status |
Measure changes in individuals over time or in response to interventions | Comparison with other subjective and objective indicators of change |
 | Development of estimates of meaningful change |