Archives of physical medicine and rehabilitation · 2010
Measuring mobility limitations in children with cerebral palsy: development, scalability, unidimensionality, and internal consistency of the mobility questionnaire, MobQues47.
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Roorda Leo D, Scholtes Vanessa A, van der Lee Johanna H, Becher Jules, Dallmeijer Annet J
Аннотация
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.
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.