Table 5.

Frequencies of at least one prior psychiatric diagnosis and at least one perceived misdiagnosis as a function of age of autism diagnosis.

	At least one prior psychiatric diagnosis (n = 1104)				At least one perceived misdiagnosis (n = 481)
	Yes		No		Yes		No
	n	%	n	%	n	%	n	%
<18	46	16.8	228	83.2	17	37.0	29	63.0
18–24	65	60.2	43	39.8	35	53.8	30	46.2
25–34	110	58.8	77	41.2	76	69.1	34	30.9
35–44	117	50.0	117	50.0	77	65.8	40	34.2
45–54	105	52.0	97	48.0	58	55.2	47	44.8
≥55	38	38.4	61	61.6	15	39.5	23	60.5
Total	481	100	623	100	278	100	203	100