Pairs AB and AC scored noticeably higher than their components, and had no support overlap, suggesting separate etiologies.
These subtypes may represent distinct neurobehavioral disorders of childhood onset with separate etiologies.
Traditionally, autistic spectrum disorder (ASD) and specific language impairment (SLI) are regarded as distinct conditions with separate etiologies.
In particular, aggressive periodontitis and periodontal pathogen colonization may have separate etiologies than the periodontal disease−related phenotypes of the current study.
Although it is likely that different autoimmune diseases have separate etiologies, the fact that several genes have been linked to more than one autoimmune disease also suggests that they may have some aspects in common (Delgado-Vega et al. 2010).
It is important to note that although novel risk factors may be associated with type 2 diabetes, it does not mean they will contribute to risk prediction, as these are separate issues of etiology and prediction (32).
For example, it is possible that an anxiety disorder which appears at a time when the person is experiencing alcohol-related problems may have an etiology separate from alcohol use.
Each underlying disorder has its own unique pathophysiology and separate set of etiologies.
