The Broader Autism Phenotype in Mothers is Associated with Increased Discordance Between Maternal-Reported and Clinician-Observed Instruments that Measure Child Autism Spectrum Disorder.
Eric Rubenstein, Rebecca Edmondson Pretzel, Gayle C Windham and 8 others
PMID 28748335WHAT IT FOUND
Mothers whose spouses or others rated them as having broader autism traits were more likely to report their child met autism screen or interview criteria when clinician observation did not.
This was not true for every clinician comparison.
Key findings
01In the analytic sample of 712 mother-child dyads, 67 mothers (9.4%) met the broader autism phenotype criterion.
02Mothers with the broader autism phenotype were significantly more likely to over-report child autism risk on the Social Communication Questionnaire compared with the Autism Diagnostic Observation Schedule (risk ratio 1.63, 95% confidence interval 1.12, 2.37) and on the Autism Diagnostic Interview-Revised compared with the Autism Diagnostic Observation Schedule (risk ratio 2.85, 95% confidence interval 1.35, 6.03).
03Mothers with the broader autism phenotype did not have a statistically significant increase in over-reporting when the Social Communication Questionnaire or the Autism Diagnostic Interview-Revised was compared with the Ohio State University Autism Rating Scale (risk ratio 1.26, 95% confidence interval 0.95, 1.77; risk ratio 1.65, 95% confidence interval 0.97, 2.81).
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
Children were identified through providers that serve developmental disabilities or autism, so the results may not apply to children who have never been referred for evaluation. The SEED sample was more educated and less frequently Hispanic than the general population. 167 mothers were missing the maternal broader autism phenotype questionnaire, and the researchers used weights to check whether this changed the results. The same clinician may have completed all instruments, which could increase agreement between instruments. The relationship between the person completing the maternal broader autism phenotype questionnaire and the mother was often left blank, so some questionnaires may have been self-report. Mothers self-reported past depression or anxiety diagnoses, and these reports were not verified with medical records. The study did not assess fathers or other caregivers as informants.
The easy way to misread this
Do not conclude that mothers with broader autism traits are poor reporters of autism in their children. The study used clinician instruments as the reference for discordance, so it cannot show that clinician judgment was the correct diagnosis.