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Table 4 Item discriminant validity

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

Domains Itens (n) Range of item correlationsa Success/Total Success Rate (%)
Dressing 4 0.34 – 0.95 13/32 40.6
Arising 2 0.35 – 0.94 16/16 100.0
Eating 3 0.32 – 0.94 22/24 91.7
Walking 2 0.41 – 0.89 16/16 100.0
Hygiene 5 0.43 – 0.76 40/40 100.0
Reach 4 0.28 – 0.76 21/24 87.5
Grip 5 0.38 – 0.83 39/40 97.5
Activities 5 0.36 – 0.71 29/40 72.5
  1. aPearson's correlation coefficient