title: Assessing physical functioning on pain management programmes: the unique contribution of directly assessed physical performance measures and their relationship to self-reports.
abstract: Physical functioning is a recommended outcome domain for pain management programmes. It can be assessed by self-report and by direct assessment of performance. Although physical performance measures may provide unique and useful information about patient functioning over and above self-report measures, it is not entirely clear which of the many possible performances to assess. This study investigated a battery of three directly assessed physical performance measures and their relationship to three currently used self-report measures of general health and functioning. The three performance measures were sensitive to treatment; patients performed significantly better on all three measures following completion of the pain management programme. The three performance measures were shown to represent a single underlying dimension, and there was a significant degree of overlap between them. The performance measures were shown to be relevant in explaining variation in the self-report measures, as well as to offer a clinically relevant different dimension of assessment to self-report. Future research could focus on developing performance-based measures that capture quality of movement and that are sensitive to relevant processes of therapeutic change.
authors.affiliation: INPUT Pain Management Unit, Guy's and St Thomas' NHS Foundation Trust, London, UK.
authors.forename: Beth J
authors.initials: BJ
authors.lastname: Guildford
authors.affiliation: INPUT Pain Management Unit, Guy's and St Thomas' NHS Foundation Trust, London, UK.
authors.forename: Clair M
authors.initials: CM
authors.lastname: Jacobs
authors.affiliation: INPUT Pain Management Unit, Guy's and St Thomas' NHS Foundation Trust, London, UK.
authors.forename: Aisling
authors.initials: A
authors.lastname: Daly-Eichenhardt
authors.affiliation: King's College London, London, UK.
authors.forename: Whitney
authors.initials: W
authors.lastname: Scott
authors.affiliation: INPUT Pain Management Unit, Guy's and St Thomas' NHS Foundation Trust, London, UK; King's College London, London, UK.
authors.forename: Lance M
authors.initials: LM
authors.lastname: McCracken
keywords: Chronic pain; assessment; pain management programme; performance measures; physical functioning; physiotherapy; self-report