Article

The Patient Goal Priority Questionnaire (PGPQ) is a patient-specific
measure for identification of behavioral goals and evaluation of clinically
significant changes. The use of such a measure in clinical settings and research
requires that identified goals be consistent over time. Self-reports of behaviors
related to the goals should be reliably estimated.
The purpose of this study was to estimate chance-corrected agreement and test-retest reliability of
the PGPQ. Chance-corrected agreement between the PGPQ and a similar
therapist-guided goal identification tool, the Patient Goal Priority List (PGPL),
also was estimated. DESIGN: A correlative and prospective design with 3
measurement points (M1, M2, and M3) was used in the study. METHODS: Fifty-four
people who consulted physical therapists in primary care for persistent
musculoskeletal pain were included in the study. Analyses of chance-corrected
agreement and test-retest reliability of the PGPQ were done at M1 and M2.
Chance-corrected agreement between procedures (PGPQ and PGPL) also was analyzed
at M1 and M3. RESULTS: The percentage of agreement on content of the priority
lists of the PGPQ at M1 and M2 was 52%. Cohen kappa values for agreement of
rankings ranged between .47 and .64. Test-retest reliability coefficients for the
self-report scales of the PGPQ ranged from .35 to .81. Chance-corrected agreement
decreased when physical therapists were involved in the goal identification
process using the PGPL (kappa = .08-.46). LIMITATIONS: Varying item content and a
small, heterogeneous sample possibly increased variation and the standard error
of measurements. The feasibility of using traditional approaches to psychometric
evaluation of patient-specific measures is questionable. CONCLUSIONS:
Chance-corrected agreement and test-retest reliability of the PGPQ were moderate.
Involving a physical therapist in the goal identification procedure possibly
introduced further bias. The size of the measurement error must be taken into
account when using the PGPQ for estimations of clinically important changes.

Langue : ANGLAIS