Concurrent validity of the Early Intervention Developmental Profile and the Peabody Developmental Motor Scale-2.
OBJECTIVE
The purpose of this study was to determine the concurrent validity of the Early Intervention Developmental Profile (EIDP) and the Peabody Developmental Motor Scale-2 (PDMS-2) in examining gross motor delay.


METHODS
Thirty children with a variety of developmental delays attending an early intervention program were administered both the PDMS-2 and the EIDP as part of their developmental evaluations.


RESULTS
The PDMS-2 and EIDP were strongly correlated (r = 0.91, p < 0.01) but the mean age equivalent scores were significantly different. Age equivalent scores were on average 26% higher on the EIDP.


CONCLUSIONS
Differences in age equivalent scores between tests may affect a child's eligibility for services in some states. This study supports the use of norm-based tests when determining a percentage of delay relative to the norm. Developmental tests should not be the sole determinant of the clinical decision making processes.
Maring
Joyce R
JR
Program in Physical Therapy, George Washington University, Washington, DC 20037, USA. hspjxm@gwumc.edu
Elbaum
Leonard
L
D000367:Age Factors; D002657:Child Development; D002675:Child, Preschool; D002658:Developmental Disabilities / Q000628:therapy*; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009048:Motor Skills / Q000502:physiology*; D019957:Motor Skills Disorders / Q000628:therapy*; D026741:Physical Therapy Modalities; D015203:Reproducibility of Results