Regression analysis was used to predict the outcome.
Children with this disorder develop normally until at least two years of age, after which an obvious regression in multiple functional skills occurs, including bladder and bowel control, ability to move, and language skills.
This behavior is part of a regression into a more secure period and can include other types of regressive behaviors such as bed wetting or wanting to sleep with the light on in the bedroom.
In many cases, authentic data garnered from a regression cannot be authenticated, and some people may give up and feel as though the information uncovered during the regression is false.
For example, for childhood disintegrative disorder to be diagnosed, symptoms must be preceded by at least two years of normal development and onset of decline and regression must occur prior to age 10 years.