Assessment of Hair Aluminum, Lead, and Mercury in a Sample of Autistic Egyptian Children: Environmental Risk Factors of Heavy Metals in Autism

Table 6

Comparison between selected risk factors and aluminum hair levels among autistic cases.

	Aluminum level (mg/kg)			P
	Mean	±SD	Median
Age group
<6 years	63.89	35.51	58.12	0.101
≥6 years	55.35	39.80	48.91
Fish consumption
Yes	49.34	19.68	58.12	0.880
No	59.50	38.43	52.93
Dental amalgam
Positive	55.21	42.73	41.14	0.205
Negative	61.25	35.46	54.87
House age
1	58.06	34.78	52.93	0.931
2	60.05	40.51	53.08
Rho(D) immune globulin
Positive	55.30	25.43	54.82	0.994
Negative	59.40	38.61	52.93
Aluminum pans
Positive	61.71	38.46	53.92	0.04
Negative	36.58	24.78	30.64

Student’s -test.