COMPARATIVE STUDY
JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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The Toronto experience in diagnosing alcohol-related neurodevelopmental disorder: a unique profile of deficits and assets.

BACKGROUND: Fetal alcohol syndrome (FAS), which involves the triad of features reflecting facial dysmorphology, growth retardation and intellectual impairments, encompasses a relatively small proportion of the children affected prenatally by alcohol. Unfortunately, in the absence of facial dysmorphology, the diagnosis is difficult in the majority of children, who are considered to have alcohol-related neurodevelopmental disorder (ARND). Because accepted clinical methods are not pathognomonic, a novel profile approach was used to examine neuropsychological abilities and disabilities to identify children with ARND who do not meet the diagnostic criteria of FAS.

OBJECTIVE: To establish a set of criteria, to be validated in future studies, for characterizing the neuropsychological profile of children with ARND. By describing the procedures at this preliminary stage of our work, the goal is to draw attention to this neglected topic and to suggest a model that can be replicated and validated by others, and to provide the first systematic clinical report on diagnosing ARND in Canada.

PROCEDURES: On the basis of the literature, parents' descriptions and the authors' own experience with ARND, a profile of neuropsychological characteristics, including both deficits and assets, that are associated with prenatal alcohol exposure was hypothesized. A group of children was then evaluated, mostly adoptees or children in foster care, who were referred for learning and behavioural problems potentially associated with gestational exposure. Their results were submitted to a profile analysis by comparing their deficits and assets according to a list describing a hypothetical ARND profile to determine whether each child fit or did not fit the ARND profile. Groups were compared for background characteristics, FAS symptomatology, and results on specific neuropsychological and behavioural tests. Finally, the characteristics most strongly differentiating the two groups were identified.

SETTING: Hospital-based outpatient program.

PARTICIPANTS: Fifty-two children aged four to 18 years who were referred for a diagnostic assessment related to suspected or known prenatal alcohol exposure.

OUTCOME MEASURES: Each child's assessment results were compared against a list of 21 deficits and six assets by two independent raters. Children with an average of more than 60% deficits and 50% assets were considered to have ARND, while the remainder were not.

RESULTS: Twenty-eight children (54%) were assigned to the ARND group and 24 to the non-ARND group. The groups did not differ in physical features or home background characteristics, with the exception of higher parental intelligence quotient in the non-ARND group. The ARND group was more likely to have repeated a grade or received special education and scored lower on standardized measures of intelligence, language and memory abilities. Frequency of behaviour or social problems were equivalent in both groups.

CONCLUSIONS: A profile approach used to identify children with ARND discriminates problems in neuropsychological but not behavioural domains. Because elevated scores on behavioural tasks in both ARND and non-ARND groups were clinically significant, more research is needed to identify what behavioural problems are unique to children with ARND compared with other clinic-referred children.

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