Table 2.

Rates of genetic testing by condition group

Condition group	Prevalence of genetic testing (% ± SE)
All respondents (ASD + ID + DD)	31.7±1.6
All ASD	33.6±2.2
All ID	43.3±3.5
Mutually exclusive groups
ASD + ID (with or without DD)	52.1±5.3
ASD + DD (without ID)	36.5±3.4
ASD only (without ID or DD)	17.2±2.9
ID without ASD (with or without DD)	38.4±4.4
DD only (without ASD or ID)	28.2±2.4

Abbreviations: SE, standard error; ASD, autism spectrum disorder; ID, intellectual disability; DD, developmental delay.