Dutch norms for the Bayley III

Dutch norms for the Bayley III - Dutch norms for the Bayley III

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

NL-OMON

Registry ID

NL-OMON35131

Enrollment

1800

Registered

2010-02-16

Start date

2010-03-01

Completion date

Unknown

Last updated

2024-05-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Normale ontwikkeling Infant and toddler development

Interventions

None listed

Eligibility

Age

2 Years to 11 Years

Inclusion criteria

Inclusion criteria: 90% Of the normgroup consists of healthy children, representative for the Dutch population regarding parental education, geografic location, and etnic origin. Concerning age, 17 agegroups will be used: these vary from 16 days to 1 months and 15 days gradually to 39 months and 0 days to 43 months and 15 days. The normgroups consists of 50% boys and 50% girls. However, 10% Of the data come from assessments of children with risk factors (e.g. premature birth, delayed language development, symtoms within the autistic spectrum) or a special condition (e.g. Down syndrome or Cerebral Palsy), in order to improve representativeness of the normgroup.

Exclusion criteria

Exclusion criteria: 90% (N=1530) of the normgroup consists of healthy children without risk factors or specific conditions, such as, prematurity; low birthweight; hospital admittance during the study; severe sensory impairments; respiratory disorder; intraventricular hemorrhage; inborn errors of metabolism; one of the following diagnoses: attention deficit hyperactivity disorder, chromosomal abnormality, congenital infections, disorder due to prenatal exposure to toxic substances, disorders repflecting disturbance of the development of the nervous system, genetic or congenital disorder, mental retardation. However for 10% (N=170) of the sample one of these risk factors or special conditions explicitly forms a selection criterium.

Design outcomes

Primary

Measure	Time frame
The primary study outcome are the Dutch norms for the Bayley III including validation and reliability studies done in subgroups of the healthy children. The validation study concerns the following developmental assessments: the Ages and Stages Questionnaires (ASQ; Squires, Potter & Bricker, 1999; ASQ-SE; Squires et al., 2002) for children between 2 and 60 months old; de Wechsler Preschool and Primary Scale of Intelligence (WPPSI, Wechsler, 2002) for children between 30 and 42 months old; the Reynell test for language comprehension (Van Eldik, Schlichting, Lutje Spelberg, B.F. van der Meulen & Sj. van der Meulen, 1995) and the Schlichting test for language expression (Schlichting, van Eldik, Lutje Spelberg, Sj. van der Meulen & B.F. van der Meulen, 1995) for children between 15 and 27 months old; as wel as the old version of the Dutch Bayley scales, BSID-II-NL (Van der Meulen, Ruiter, Lutje Spelberg & Smrkovsky, 2002).	—

Measure

Time frame

The primary study outcome are the Dutch norms for the Bayley III including validation and reliability studies done in subgroups of the healthy children. The validation study concerns the following developmental assessments: the Ages and Stages Questionnaires (ASQ; Squires, Potter & Bricker, 1999; ASQ-SE; Squires et al., 2002) for children between 2 and 60 months old; de Wechsler Preschool and Primary Scale of Intelligence (WPPSI, Wechsler, 2002) for children between 30 and 42 months old; the Reynell test for language comprehension (Van Eldik, Schlichting, Lutje Spelberg, B.F. van der Meulen & Sj. van der Meulen, 1995) and the Schlichting test for language expression (Schlichting, van Eldik, Lutje Spelberg, Sj. van der Meulen & B.F. van der Meulen, 1995) for children between 15 and 27 months old; as wel as the old version of the Dutch Bayley scales, BSID-II-NL (Van der Meulen, Ruiter, Lutje Spelberg & Smrkovsky, 2002).

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Secondary

Measure	Time frame
Parent questionnaires inform on parenting, personality, and family background characteristics that may affect child development. This information is needed for descriptive purposes and may be used in relation to evaluate children with extreme scores.	—

Countries

Netherlands

Outcome results