Table IV.

Mean ADOS scores

	Age (mo)	Social affect total	RR total	Total
Earliest age (range; SD)
ASD (n = 32)	17.9 (12.5–24.3; 3.8)	13.8 (4–20; 4.8)	2.9 (0–7; 1.8)	16.8 (4–25; 6.0)
LD (n = 56)	15.6 (11.2–24.8; 3.1)	5.3 (0–12; 3.3)	1.2 (0–5; 1.4)	6.5 (0–17; 4.3)
DD (n = 9)	16.2 (13.5–21.1; 3.1)	9.6 (0–17; 6.4)	2.3 (0–5; 2)	12 (3–21; 7.2)
Other (n = 36)	14.7 (12.3–23.7; 2.5)	4.3 (0–14; 3.2)	1.8 (0–8; 2.1)	6.2 (0–16; 4.1)
Prior positive ASD test result (n = 5)	16.2 (12.2–23.0; 4.8)	9.8 (3–13; 4.1)	1.8 (0–3; 1.6)	11.6 (3–16; 5.0)
False-positive result (n = 46)	14.0 (11.5–19.5; 1.5)	3.0 (0–12; 2.9)	.3 (0–3; .6)	3.3 (0–12; 3.0)
Control (n = 41)	15.0 (12.0–23.2; 2.3)	2.1 (0–7; 1.8)	.5 (0–4; 1.0)	2.5 (0–8; 2.1)
Most recent age (range; SD)
ASD (n = 32)	34.2 (18.4–60.9; 8.8)	13.4 (7.0–22.0; 4.6)	3.5 (0–6.0; 1.6)	16.9 (7.0–26.0; 5.2)
LD (n = 56)	25.1 (12.9–46.4; 8.8)	3.6 (0–12.0; 2.9)	0.6 (0–5.0; 1.0)	4.1 (0–17.0; 3.5)
DD (n = 9)	32.6 (13.8–51.0; 11.2)	4.6 (2.0–12.0; 3.4)	2.3 (0–5.0; 1.8)	6.9 (3.0–17.0; 4.8)
Other (n = 36)	24.7 (12.3–40.4; 9.1)	4.0 (0–10.0; 2.4)	0.8 (0–7.0; 1.6)	4.8 (0–12.0; 3.0)
Prior positive ASD test result (n = 5)	32.1 (19.8–44.9; 10.3)	4.8 (2.0–6.0; 1.9)	0.5 (0–2.0; 1.0)	5.3 (4.0–6.0; 1.0)
False-positive result (n = 46)	24.9 (12.5–38.4; 8.7)	2.3 (0–9.0; 2.3)	0.3 (0–3.0; .7)	2.6 (0–9.0; 2.5)
Control (n = 41)	24.6 (12.0–44.7; 9.9)	1.7 (0–6.0; 1.8)	0.2 (0–2.0; 0.5)	1.9 (0–7.0; 2.1)

RR, restricted and repetitive.