Table 2. Comparison of Chemical Intolerance (Quick Environmental Exposure and Sensitivity Inventory) Scores Among the Mothers of the 3 Groups of Children

Chemical Exposures Scale	Mothers of Children With ASD		Mothers of Children With ADHD		Mothers of Control Children
Chemical Exposures Scale	Mean	SD	Mean	SD	Mean	SD
Total scale score	31.37^*	23.66	30.90^*	22.47	23.67	21.95
Items
Diesel/gas engine exhaust	3.24^*	2.75	3.34^*	2.87	2.58	2.74
Tobacco smoke	3.84	3.10	4.04^*	3.17	3.26	3.05
Insecticide	3.33^*	3.04	3.06^*	2.90	2.37	2.66
Gasoline	2.51^*	2.49	2.30^*	2.51	1.72	2.34
Paint/paint thinner	3.45^*	2.90	3.28^*	2.87	2.48	2.66
Cleaning products	3.35	2.98	3.27	2.96	2.71	2.89
Perfumes/other fragrances	3.67	3.26	3.97^*	3.31	3.14	3.17
Tar/asphalt	3.06^*	2.93	2.90	2.98	2.25	2.80
Nail polish, remover, hairspray	2.46^*	2.57	2.35^*	2.68	1.58	2.29
Carpet, shower curtain, new car smell	2.70^*	2.93	2.34^*	2.61	1.63	2.44

Items are scaled from 1 to 10, then summed across items for the total score, with a total possible range from 0 to 100. The range for control mothers was 0 to 88, 1 to 92 for mothers of children with attention deficit hyperactivity disorder (ADHD), and 0 to 90 for mothers of children with autism spectrum disorder (ASD).
↵* P < .05.
SD, standard deviation.