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Measuring mobility limitations in children with cerebral palsy: interrater and intrarater reliability of a mobility questionnaire (MobQues)
Author(s) -
VAN RAVESTEYN NICOLIEN T,
DALLMEIJER ANNET J,
SCHOLTES VANESSA A,
ROORDA LEO D,
BECHER JULES G
Publication year - 2010
Publication title -
developmental medicine and child neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.658
H-Index - 143
eISSN - 1469-8749
pISSN - 0012-1622
DOI - 10.1111/j.1469-8749.2009.03341.x
Subject(s) - inter rater reliability , gross motor function classification system , intraclass correlation , intra rater reliability , cerebral palsy , reliability (semiconductor) , psychology , population , physical therapy , standard error , psychometrics , physical medicine and rehabilitation , medicine , rating scale , developmental psychology , statistics , mathematics , power (physics) , physics , environmental health , quantum mechanics
Aim The objective of this study was to assess the reliability of a mobility questionnaire (MobQues) that was developed to measure the mobility limitations of children with cerebral palsy (CP) as rated by their parents. A clinical version of the questionnaire, consisting of 47 items (MobQues47), is available, as well as a research version with 28 items for a specific population (MobQues28). Total scores are expressed on a scale of 0 to 100. Method We assessed the interrater reliability between both parents of 289 children with CP (168 males, 121 females, age range 2–13y, Gross Motor Function Classification System levels I–IV) and the intrarater reliability within a subgroup of 38 parents (of 23 children) who completed the MobQues twice. Results For the interrater reliability, high intraclass correlation coefficients (ICCs) were found for the MobQues47 (ICC 0.92) and MobQues28 (ICC 0.87). The standard error of measurement (SEM) was 7.8 and 8.9 respectively. As expected, the intrarater reliability was higher, as represented by higher ICCs (0.96–0.99) and lower SEMs (3.5–4.9) for both MobQues versions. Interpretation The results of this study indicate that the MobQues is a reliable instrument to measure the mobility limitations of children with CP.