Measuring Mobility Limitations in Children With Cerebral Palsy: Rasch Model Fit of a Mobility Questionnaire, MobQues28

作者：Dallmeijer Annet J^*; Scholtes Vanessa A; Becher Jules; Roorda Leo D

来源：Archives of Physical Medicine and Rehabilitation, 2011, 92(4): 640-645.

DOI：10.1016/j.apmr.2010.11.002

• Cerebral palsy
• Child
• Mobility limitation
• Outcome assessment (health care)
• Rehabilitation

Dallmeijer AJ, Scholtes VA, Becher J, Roorda LD. Measuring mobility limitations in children with cerebral palsy: Rasch model fit of a mobility questionnaire, MobQues28. Arch Phys Med Rehabil 2011;92:640-5.
Objective: To develop a Rasch-based version of a mobility questionnaire (MobQues28) for children with cerebral palsy (CP).
Design: Cross-sectional study.
Setting: Private physical therapy practices and outpatient departments of hospitals and rehabilitation centers.
Participants: Parents of 323 ambulatory children with CP (Gross Motor Function Classification System [GMFCS] level I-IV; aged, 2-13y).
Interventions: Not applicable.
Main Outcome Measure: The mobility questionnaire measures mobility limitations in children with CP by rating the difficulty of executing 47 mobility activities, as reported by the parents. Items for the Rasch-based version were selected based on fit to the Rasch measurement (partial credit) model and invariance of item characteristics across GMFCS level, age group, or sex.
Results: Analysis revealed a fitting model when nonambulant and/or 2- and 3-year aged children were excluded (leaving a final sample of n=246) and answering categories were collapsed from 9 to 5. Thirteen items were removed from the questionnaire due to misfit to the model, 5 because of disordered thresholds, and 1 because of invariance across age group. Twenty-eight items out of the original 47 items showed good fit to the model.
Conclusions: The 28-item version of the mobility questionnaire (MobQues28) provides sound measurement properties for measuring mobility limitations in ambulant children with CP, aged 4 to 13 years, and shows promise as an instrument for research purposes.

• 出版日期2011-4