Even when parents raise concerns early, diagnoses often come late

"Parents with autistic children were more likely to receive a passive, rather than a proactive response from a provider when raising concerns about their children's development compared with parents whose children exhibited signs of developmental delay, according to data from a large survey."

See:   http://www.medpagetoday.com/Pediatrics/Autism/51004?xid=nl_mpt_DHE_2015-04-16&eun=g906366d0r&userid=906366&mu_id=5793688

Source article:  Zuckerman KE, et al.  Parental concerns, provider response and timeliness of autism spectrum diagnosis.  J Pediatr 2015; DOI 10.1016/jpeds.2015.03.007