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Table 2 Data quality: missing data, floor and ceiling effects

From: Psychometric properties of the Child Health Assessment Questionnaire (CHAQ) applied to children and adolescents with cerebral palsy

CHAQ Missing data (%) Floor effect (%) Ceiling effect (%)
Dressing 6.2 3.1 68.8
Arising 3.1 26.0 30.2
Eating 3.1 6.3 45.8
Walking 3.1 13.7 41.1
Hygiene 6.2 3.2 47.9
Reach 7.3 7.4 40.4
Grip 6.2 16.0 40.4
Activities 9.3 2.1 68.1
Evaluation of pain 3.1 35.5 1.1
Evaluation of overall well-being 4.2 26.1 1.1