Effectiveness of the Denver Developmental Screening Test with biologically vulnerable infants
Related Experiment Videos
Insights
The Denver Developmental Screening Test (DDST) may under-identify motor problems in high-risk infants. However, screener observations during DDST administration show promise for developmental assessment.
Area of Science:
- Developmental Pediatrics
- Neonatal Follow-up
- Screening Tools
Background:
- The Denver Developmental Screening Test (DDST) was designed for general population screening.
- Its application in screening biologically at-risk infants, including those with low birth weight, is common but lacks robust validation in this population.
- Concerns exist regarding the DDST's efficacy for infants under 30 months, especially those from Neonatal Intensive Care Units (NICU).
Purpose of the Study:
- To evaluate the effectiveness of the DDST in screening infants who are graduates of Neonatal Intensive Care Units (NICUs).
- To compare DDST categorical results with detailed NICU Follow-up Clinic evaluations for identifying motor problems.
- To assess the utility of screener clinical impressions derived during DDST administration.
Main Methods:
- The study involved 62 infants graduating from a NICU.
- The Denver Developmental Screening Test (DDST) was administered in home settings.
- DDST categorical outcomes (Normal, Questionable, Abnormal) were compared against comprehensive evaluations from NICU Follow-up Clinics.
Main Results:
- The DDST's categorical results demonstrated significant underselection of infants with abnormal or suspect findings on detailed clinic evaluations.
- Screener clinical impression ratings, based on observations during DDST administration, showed encouraging effectiveness in identifying infants with positive criterion results.
- This suggests limitations in the DDST's standardized scoring for this vulnerable group.
Conclusions:
- The categorical results of the DDST may have limited value for screening biologically vulnerable infants.
- Administering the DDST can serve as a valuable framework for systematic observation of infant developmental status, especially for less experienced screeners.
- Further research is needed to define and validate these qualitative observational aspects for improved developmental assessment.
Abstract:
The Denver Developmental Screening Test (DDST) was initially developed specifically to identify children with mental retardation. However, its use in screening low birth weight and other biologically at-risk infants for motor problems is widespread. In view of the absence of biologically vulnerable children in the DDST standardization sample, and the limited validational support available for its use with children under 30 months of age, the purpose of this study was to investigate the effectiveness of the DDST in screening 62 Neonatal Intensive Care Unit graduates during infancy. Categorical results (Normal, Questionable, Abnormal), obtained in the home setting by DDST, were compared with results of Neonatal Intensive Care Unit Follow-up Clinic evaluations. There was a marked underselection of the DDST's categorical results in identifying those infants with suspect or abnormal findings on the more detailed clinic evaluations. However, the effectiveness of the screeners' clinical impression ratings (based on observations made during administration of the DDST) in identifying infants with positive criterion results was encouraging. These findings suggest that, although the DDST's categorical results may be of limited value in screening biologically vulnerable infants, administration of the DDST may provide a useful framework for more systematically observing and documenting significant qualitative aspects of an infant's developmental status, particularly for the screener who is less experienced in neuromotor assessment. These observations need to be defined further, and validated.