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Unstable longitudinal motor performance in preterm infants from 6 to 24 months on the Bayley Scales of Infant Development--Second edition.

Abstract：

:Preterm birth increases the risk for neurologic and developmental disabilities and therefore long-term follow-up is important. This prospective follow-up study aims to describe longitudinal motor performance in preterm infants from 6 to 24 months and to detect the influence of risk factors on motor performance trajectories. We included preterm infants (n=348) with a gestational age of ≤32 weeks. The Bayley Scales of Infant Development, 2nd edition (BSID-II) Motor Scale and the Behaviour Rating Scale were recorded at the corrected ages of 6, 12 and 24 months. The Motor Scale raw score was the dependent variable in random coefficient analysis for risk factors in the cohort if infants with cerebral damage were in- and excluded. The raw score increased, showed the highest correlation (rp=0.48-0.67) and was more stable than the PDI and its classification. Fifteen percent of the infants had a stable classification, while 45% changed one class. Male sex and intra-ventricular haemorrhage (IVH) lowered the raw scores. Higher motor quality scores and height increased the raw scores, while the influence of maternal education varied at different time points. Removal of infants with cerebral damage from the cohort did not change the risk factors. The results showed that the raw score trajectories were more stable, but after corrections for norm data, the measurements became highly unstable. This is clinically important when reporting results to parents, guiding intervention and in randomised trials. The risk factors predominantly influenced the level of motor performance raw scores. Maternal education additionally influenced the trajectory and should be included in randomisation procedures.

journal_name

Res Dev Disabil

journal_title

Research in developmental disabilities

authors

Janssen AJ,Akkermans RP,Steiner K,de Haes OA,Oostendorp RA,Kollée LA,Nijhuis-van der Sanden MW

doi

10.1016/j.ridd.2011.03.026

subject

Has Abstract

pub_date

2011-09-01 00:00:00

pages

1902-9

issue

eissn

0891-4222

issn

1873-3379

pii

S0891-4222(11)00145-4

journal_volume

pub_type

临床试验,杂志文章

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Unstable longitudinal motor performance in preterm infants from 6 to 24 months on the Bayley Scales of Infant Development--Second edition.