Sarit van Veen1, Cornelieke S H Aarnoudse-Moens2, Anton H van Kaam3, Jaap Oosterlaan4, Aleid G van Wassenaer-Leemhuis3. 1. Psychosocial Department, Academic Medical Center, Amsterdam, The Netherlands; Department of Neonatology, Academic Medical Center, Amsterdam, The Netherlands. Electronic address: s.vanveen@amc.uva.nl. 2. Psychosocial Department, Academic Medical Center, Amsterdam, The Netherlands; Department of Neonatology, Academic Medical Center, Amsterdam, The Netherlands. 3. Department of Neonatology, Academic Medical Center, Amsterdam, The Netherlands. 4. Department of Pediatrics, Academic Medical Center, Amsterdam, The Netherlands.
Abstract
OBJECTIVES: To determine the effects of correcting for prematurity on full scale IQ (FSIQ), verbal IQ (VIQ), performance IQ (PIQ), and processing speed quotient (PSQ) scores, and to investigate whether differences between corrected and uncorrected FSIQ are associated with gestational age (GA), FSIQ, and age at assessment. STUDY DESIGN: Single-center consecutive cohort study. Data were analyzed from 275 very preterm children (GA <30 weeks), born between January 2006 and December 2009 and assessed at 5 years corrected age as part of the neonatal long-term follow-up program, at the Emma Children's Hospital in Amsterdam, The Netherlands. Outcome measures were FSIQ, VIQ, PIQ, and PSQ, calculated for uncorrected and corrected age. Paired sample t tests, repeated measures ANOVA, and ANCOVA were performed to explore differences between corrected and uncorrected IQ. RESULTS: Differences between corrected and uncorrected FSIQ, VIQ, PIQ, and PSQ ranged from 0-15 IQ points. All corrected IQ scores were significantly higher than uncorrected IQ scores (all P values <.001). Differences were larger at lower GAs, for higher IQ scores, and if time of assessment lay near the starting point of a 3-month age band of the Wechsler Preschool and Primary Scale of Intelligence-Third Edition-Dutch Version. CONCLUSIONS: Given the great variation observed in differences between corrected and uncorrected IQ scores, an international standard as to what age correction is appropriate should be pursued.
OBJECTIVES: To determine the effects of correcting for prematurity on full scale IQ (FSIQ), verbal IQ (VIQ), performance IQ (PIQ), and processing speed quotient (PSQ) scores, and to investigate whether differences between corrected and uncorrected FSIQ are associated with gestational age (GA), FSIQ, and age at assessment. STUDY DESIGN: Single-center consecutive cohort study. Data were analyzed from 275 very preterm children (GA <30 weeks), born between January 2006 and December 2009 and assessed at 5 years corrected age as part of the neonatal long-term follow-up program, at the Emma Children's Hospital in Amsterdam, The Netherlands. Outcome measures were FSIQ, VIQ, PIQ, and PSQ, calculated for uncorrected and corrected age. Paired sample t tests, repeated measures ANOVA, and ANCOVA were performed to explore differences between corrected and uncorrected IQ. RESULTS: Differences between corrected and uncorrected FSIQ, VIQ, PIQ, and PSQ ranged from 0-15 IQ points. All corrected IQ scores were significantly higher than uncorrected IQ scores (all P values <.001). Differences were larger at lower GAs, for higher IQ scores, and if time of assessment lay near the starting point of a 3-month age band of the Wechsler Preschool and Primary Scale of Intelligence-Third Edition-Dutch Version. CONCLUSIONS: Given the great variation observed in differences between corrected and uncorrected IQ scores, an international standard as to what age correction is appropriate should be pursued.
Authors: Jennifer L Richards; Carolyn Drews-Botsch; Jessica M Sales; William Dana Flanders; Michael R Kramer Journal: Paediatr Perinat Epidemiol Date: 2016-10-25 Impact factor: 3.980
Authors: Sarit van Veen; Aleid G van Wassenaer-Leemhuis; Jaap Oosterlaan; Anton H van Kaam; Cornelieke S H Aarnoudse-Moens Journal: Acta Paediatr Date: 2019-12-04 Impact factor: 2.299
Authors: Joanne M George; Alex M Pagnozzi; Samudragupta Bora; Roslyn N Boyd; Paul B Colditz; Stephen E Rose; Robert S Ware; Kerstin Pannek; Jane E Bursle; Jurgen Fripp; Karen Barlow; Kartik Iyer; Shaneen J Leishman; Rebecca L Jendra Journal: BMJ Open Date: 2020-05-12 Impact factor: 2.692
Authors: Pauline E van Beek; Iris E van der Horst; Josse Wetzer; Anneloes L van Baar; Brigitte Vugs; Peter Andriessen Journal: Front Pediatr Date: 2021-05-10 Impact factor: 3.418
Authors: S van Veen; S Remmers; C S H Aarnoudse-Moens; J Oosterlaan; A H van Kaam; A G van Wassenaer-Leemhuis Journal: Acta Paediatr Date: 2018-08-22 Impact factor: 2.299