Test–retest and inter-rater reliability for the Comprehensive Developmental Inventory for Infants and Toddlers diagnostic and screening tests

• Published in: Early human development 2005-11, Vol.81 (11), p.927-937
• Main Authors: Liao, Hua-Fang, Pan, Yi-Ling
• Format: Article
• Language: English
• Subjects: Care and treatment; CDIIT; Child; Child, Preschool; Children; Comprehensive Developmental Inventory for Infants and Toddlers; Developmental; Developmental Disabilities - diagnosis; Disabilities; Humans; Infant; Infants; Mass Screening; Methods; Neuropsychological Tests; Reliability; Screening; Test
• ISSN: 0378-3782; 1872-6232
• DOI: 10.1016/j.earlhumdev.2005.07.008

Reliability information for the Comprehensive Developmental Inventory for Infants and Toddlers diagnostic (CDIITDT) and screening tests (CDIITST) is inadequate. To assess the test–retest and inter-rater reliability of the CDIITDT and CDIITST. A repeated measures design was selected. Non-disabled term ( n = 15; mean age 8.4 ± 1.6 months) and preterm infants ( n = 16; mean age 9.3 ± 2.9 months), and children with developmental disabilities ( n = 15; mean age 24.7 ± 11.8 months) were recruited. A single rater assessed the children twice in 3 days to examine the test–retest reliability; and a second rater observed and scored performance while the same rater conducted the first assessment for the inter-rater reliability analysis. The raw score, developmental age (DA) and developmental quotient (DQ)/ Z score for the six subtests, two motor subdomains and the whole test were used as outcome measures for the CDIITDT and CDIITST. The test–retest reliabilities for the CDIITDT were rated good for the three pediatric groups (ICC 0.76–1.00), with the exception of moderate ratings for the self-help subtest for the term infants and for the social, self-help and fine-motor DQs for the preterm group. The CDIITDT inter-rater reliabilities were good for the three groups (ICC 0.76–1.00), with the exception of only moderate reliability for the cognitive DQs for the preterm infants. The reliabilities for the whole CDIITST for the three groups were high (ICC 0.93–1.00). The reliabilities for the whole CDIITDT and its various subtests and the whole CDIITST are acceptable for clinical use.