Table 4 Regression Models for the effects of factor scores on age of diagnosis using 5 factor Varimax Rotation Model

Factor 1: Regressive Autism

−2.43***

−2.01***

−1.77**

−1.64**

(0.66)

(0.65)

(0.79)

(0.78)

Factor 2: Social Awkwardness

0.53

−0.90

0.88

−0.69

(0.73)

(0.72)

(0.76)

(0.76)

Factor 3: Communication Difficulties

−15.7***

−13.5***

−15.3***

− 13.2***

(0.70)

(0.74)

(0.77)

(0.79)

Factor 4: Sensory Reactivity & Need for Sameness

−1.97***

−2.55***

−1.61**

−2.34***

(0.76)

(0.74)

(0.80)

(0.77)

Factor 5: Aggressive Behavior

7.46***

6.25***

7.81***

6.46***

(0.73)

−0.73

(0.76)

(0.76)

Both Parents Graduated College

−4.04**

−4.07**

(1.60)

−1.6

Only Mother Graduated College

0.52

0.48

(1.78)

(1.78)

Only Father Graduated College

−3.65

−3.61

(2.45)

(2.45)

Black

1.49

1.42

(2.97)

(2.97)

Hispanic/Latino

3.20

3.24

(1.97)

(1.97)

Other

3.02

3.06

(3.46)

(3.46)

Family Income > $100,000

−1.45

−1.48

(1.54)

(1.54)

Lived in Urban Area

−2.76

−2.76

(1.79)

(1.79)

Asperger Diagnosis

10.9***

10.8***

(1.84)

(1.85)

Year of Birth

−0.75***

−0.75***

(0.10)

(0.10)

Number of Symptoms Reported

−0.97***

−0.31

−0.18

(0.14)

(0.21)

(0.21)

Constant

46.7***

1549***

64.3***

52.7***

1553***

(0.62)

(202)

(2.63)

(4.12)

(202)

Observations

1359

1330

1669

1359

1330

R-squared

0.327

0.387

0.030

0.328

0.387