Article

OBJECTIVES: To develop a questionnaire that specifically and comprehensively
measures mobility limitations in children with cerebral palsy (CP) and to
investigate certain psychometric properties (scalability, unidimensionality,
internal consistency) of this questionnaire. DESIGN: Cross-sectional study.
SETTING: Private physical therapy practices and outpatient departments of
hospitals and rehabilitation centers. PARTICIPANTS: Children with CP undergoing
physical therapy or rehabilitation. The Mobility Questionnaire, 47-item
(MobQues47), was completed by the mothers of these children (N=323; mean age +/-
SD, 7.1+/-2.9y; 57% boys; Gross Motor Function Classification levels: I [48%], II
[26%], III [19%], IV [7%]). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES:
Mokken scale analysis was used to investigate (1) scalability, indicating that
the items form a scale; (2) unidimensionality, indicating that the items measure
only 1 concept; and (3) internal consistency, indicating the degree of
interrelatedness of the items. RESULTS: The MobQues47, made up of 47 items, was
developed on the basis of 3 pilot studies and careful operationalization of the
concept (or construct) of mobility limitations. The scalability (coefficient
H=.70), unidimensionality, and internal consistency (coefficient rho=.99) of the
MobQues47 were found to be very good. CONCLUSIONS: The MobQues47 is a
unidimensional scale with excellent internal consistency that can be used to
measure caregiver-reported mobility limitations in children with CP.

Langue : ANGLAIS