Article

No appropriate measures have been specifically developed for pelvic
girdle pain (PGP). There is a need for suitable outcome measures that are
reliable and valid for people with PGP for use in research and clinical practice.
The objective of this study was to develop a condition-specific
measure, the Pelvic Girdle Questionnaire (PGQ), for use during pregnancy and
postpartum. DESIGN: This was a methodology study.
METHODS: Items were developed
from a literature review and information from a focus group of people who
consulted physical therapists for PGP. Face validity and content validity were
assessed by classifying the items according to the World Health Organization's
International Classification of Functioning, Disability and Health. After a pilot
study, the PGQ was administered to participants with clinically verified PGP by
means of a postal questionnaire in 2 surveys. The first survey included 94
participants (52 pregnant), and the second survey included 87 participants (43
pregnant). Rasch analysis was used for item reduction, and the PGQ was assessed
for unidimensionality, item fit, redundancy, and differential item functioning.
Test-retest reliability was assessed with a random sample of 42 participants.
RESULTS: The analysis resulted in a questionnaire consisting of 20 activity items
and 5 symptom items on a 4-point response scale. The items in both subscales
showed a good fit to the Rasch model, with acceptable internal consistency,
satisfactory fit residuals, and no disordered threshold. Test-retest reliability
showed high intraclass correlation coefficient estimates: .93 (95% confidence
interval=0.86-0.96) for the PGQ activity subscale and .91 (95% confidence
interval=0.84-0.95) for the PGQ symptom subscale. Limitations The PGQ should be
compared with low back pain questionnaires as part of a concurrent evaluation of
measurement properties, including validity and responsiveness to change.
CONCLUSIONS: The PGQ is the first condition-specific measure developed for people
with PGP. The PGQ had acceptably high reliability and validity in people with PGP
both during pregnancy and postpartum, it is simple to administer, and it is
feasible for use in clinical practice.
Ceinture pelvienne

Langue : ANGLAIS