title: Concurrent validity of the Comprehensive Developmental Inventory for Infants and Toddlers with the Bayley Scales of Infant Development-II in preterm infants.
abstract: OBJECTIVE
  The Comprehensive Developmental Inventory for Infants and Toddlers (CDIIT) is a new developmental test designed in Taiwan and lacks concurrent validity information. This study investigated the concurrent validity of the CDIIT with the Bayley Scales of Infant Development-II (BSID-II) in preterm infants aged 6-18 and 21-40 months, respectively.
  
  
  METHODS
  We recruited 160 preterm infants (84 boys, 76 girls) with a corrected age of 6-18 months and followed them up until 21-40 months of age. One tester administered the CDIIT and BSID-II to all infants. Developmental ages (DAs) and developmental quotients (DQs) from both tests were analyzed with Pearson correlation and kappa tests.
  
  
  RESULTS
  Correlation coefficients for DAs and DQs between the 2 cognitive and motor subtests and classification agreements were high at 6-18 months (r = 0.80-0.97; kappa = 0.80, 0.85) and moderate to high at 21-40 months (r = 0.60-0.77; kappa = 0.44, 0.57). DQ classification for the CDIIT motor subtests tended to be higher than for the BSID-II motor scales at 21-40 months.
  
  
  CONCLUSIONS
  In preterm infants, concurrent validity between the motor and cognitive subtests of the CDIIT and the BSID-II was acceptable. The CDIIT can be thus used in clinics for the early identification of developmental delay in infants and toddlers.
authors.affiliation: School and Graduate Institute of Physical Therapy, College of Medicine, Taipei, Taiwan.
authors.forename: Hua-Fang
authors.initials: HF
authors.lastname: Liao
authors.forename: Tien-Miau
authors.initials: TM
authors.lastname: Wang
authors.forename: Grace
authors.initials: G
authors.lastname: Yao
authors.forename: Wang-Tso
authors.initials: WT
authors.lastname: Lee
mesh_terms: D002657:Child Development; D002675:Child, Preschool; D002658:Developmental Disabilities / Q000175:diagnosis*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature; D008297:Male; D011795:Surveys and Questionnaires