Developmental assessment of preterm infants at 2 years: validity of parent reports
Version of Record online: 28 NOV 2007
Developmental Medicine & Child Neurology
Volume 50, Issue 1, pages 58–62, January 2008
How to Cite
Johnson, S., Wolke, D., Marlow, N. and for the Preterm Infant Parenting Study Group. (2008), Developmental assessment of preterm infants at 2 years: validity of parent reports. Developmental Medicine & Child Neurology, 50: 58–62. doi: 10.1111/j.1469-8749.2007.02010.x
- Issue online: 28 NOV 2007
- Version of Record online: 28 NOV 2007
- Accepted for publication 13th August 2007.
Parental questionnaires are inexpensive alternatives to standardized testing for outcome measurement. The Parent Report of Children's Abilities has previously been revised (PARCA-R) and validated for use with very-preterm infants at 2 years of age. This study revalidated the PARCA-R for assessing cognition in a larger and more inclusive sample of preterm infants. One hundred and sixty-four children (82 males, 82 females) of <32 weeks' gestation (median 29wks, interquartile range [IQR] 28-30wks); and median birthweight 1200g (IQR 925-1463g) were evaluated using the Mental Development Index (MDI) of the Bayley Scales of Infant Development - 2nd edition (BSID-II) at 2 years' corrected age. Parents completed the PARCA-R questionnaire. Significant correlations between PARCA-R Parent Report Composite (PRC) scores and MDI scores (r=0.77, 95% confidence interval [CI] 0.69-0.82, p<0.01) demonstrated concurrent validity. A receiver operating characteristic-determined PRC cut-off of <44 had optimal discriminatory power (area under curve 0.92) for identifying MDI <70, with 85% sensitivity (95% CI 0.58-0.96), 87% specificity (95% CI 0.81-0.92), 98% negative predictive value (95% CI 0.95-1), and 37% positive predictive value (95% CI 0.22-0.54). The PARCA-R has good concurrent validity and diagnostic utility for identifying cognitive delay in very-preterm infants at 2 years of age. It is useful for outcome measurement, developmental screening, and facilitating parental involvement at folow-up.