Table C-1. Instances of Each Autism Etiology by Year of Publication

Year

Total for

Year

Allergy/

Immune

Biological

Environ-

mental

Genetic

Neuro-

logical

Psycho-

logical

'43

2




2

'44

3



1

2

'45

0





'46

0





'47

1




1

'48

0





'49

2

1

1

'50

6



1

5

'51

4

1

3

'52

2




2

'53

3

1

1

1

'54

5



1

4

'55

3

1

1

1

'56

1




1

'57

2

1

1

'58

3

1

1

1

'59

1




1

'60

4


1

1

2

'61

0





'62

3



1

2

'63

9


1

3

5

'64

15

1

1

4

9

'65

19

1

2

2

7

7

'66

4



1

3

'67

6


2

1

3

'68

17

1

2

8

6

'69

22

2

2

8

10

'70

20

2

1

2

2

5

8

Subtotal

157

6

6

6

14

44

81


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