Skip to main content

Table 3 Reliability: internal consistency reliability and item internal consistency

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

Domains Itens (n) Internal consistency reliabilitya Item internal consistency
    Range of item correlationsb Success/Total Success Rate
Dressing 4 0.85 0.44 – 0.95 4/4 100
Arising 2 0.94 0.84 – 0.94 2/2 100
Eating 3 0.85 0.57 – 0.94 3/3 100
Walking 2 0.95 0.86 – 0.89 2/2 100
Hygiene 5 0.95 0.72 – 0.79 5/5 100
Reach 4 0.88 0.50 – 0.76 4/4 100
Grip 5 0.94 0.61 – 0.83 5/5 100
Activities 5 0.90 0.58–0.71 5/5 100
  1. aCronbach alpha coefficient
  2. bPearson's correlation coefficient