. Author manuscript; available in PMC: 2016 Sep 1.

Published in final edited form as: J Child Psychol Psychiatry. 2015 Apr 29;56(9):988–998. doi: 10.1111/jcpp.12421

Table 4.

Estimated scores and 95% confidence intervals for the four stability groups

Variable	True Positives (n = 38)	False Negatives (n = 72)	False Positives (n = 15)	True Negatives (n = 293)
*ADOS Social-Communication Score*
18 months	14.0 (12.6 - 15.4)	7.0 (6.0 - 8.1)^a,^b	6.9 (4.7 - 9.0) ^a,^b	4.5 (4.1 - 4.9)
24 months	12.7 (11.5 - 14.0)	9.2 (8.3 - 10.1) ^a,^b	10.8 (8.8 - 12.7)^b	3.5 (3.2 - 2.9)
36 months	12.4 (11.1 - 13.7)	11.6 (10.6 - 12.6)^b,^c	5.2 (3.2 - 7.2) ^a,^b,^c	3.0 (2.4 - 3.7)
*Mullen Expressive Language T Score*
18 months	32.9 (28.5 - 37.3)	42.0 (38.2 - 45.8)^a,^b	40.6 (34.0 - 47.3)^a,^b	48.4 (46.1 - 50.8)
24 months	36.5 (32.7 - 40.4)	45.1 (41.9 - 48.3)^a,^b	45.2 (39.5 - 50.9)^a,^b	52.2 (50.0 - 54.4)
36 months	37.9 (33.9 - 41.9)	45.4 (42.1 - 48.8)^a,^b	48.4 (42.4 - 54.4)^a	53.7 (51.6 - 55.9)
*Mullen Receptive Language T Score*
18 months	26.6 (21.4 - 31.8)	37.9 (33.8 - 42.1)^a,^b	34.5 (25.9 - 43.1)^b	48.0 (45.3 - 50.7)
24 months	34.1 (29.8 - 38.5)	44.2 (40.7 - 47.6)^a,^b	42.3 (35.6 - 49.1)^a,^b	54.2 (51.7 - 56.7)
36 months	36.4 (31.9 - 40.9)	43.8 (40.4 - 47.2)^a,^b	45.2 (38.6 - 51.7)^a,^b	53.7 (51.4 - 56.1)
*Mullen Visual Reception T Score*
18 months	42.4 (38.7 - 46.1)	45.5 (42.6 - 48.5)^b	44.4 (38.7 - 50.2)^b	51.6 (49.5 - 53.6)
24 months	40.0 (36.6 - 43.4)	45.8 (43.1 - 48.5)^a,^b	45.7 (40.5 - 50.8)^a,^b	53.7 (51.7 - 55.7)
36 months	37.9 (32.8 - 42.9)	48.9 (45.2 - 52.6)^a,^b	50.8 (43.3 - 58.2)^a,^b	60.5 (58.2 - 62.8)
*Mullen Fine Motor T Score*
18 months	44.3 (41.6 - 47.1)	50.1 (47.4 - 52.7)^a,^b	47.4 (43.1 - 51.8)^b	52.8 (51.3 - 54.4)
24 months	39.4 (36.8 - 42.0)	44.1 (42.9 - 47.3)^a,^b	44.4 (40.4 - 48.4)^a,^b	51.0 (49.6 - 52.4)
36 months	34.0 (29.8 - 38.2)	39.7 (36.5 - 43.0)^a,^b	42.9 (36.5 - 49.2)^a,^b	52.0 (50.3 - 53.7)

Note:

Significant differences (p < .05) from True Positives

Significant differences (p < .05) from True Negatives

Significant differences (p < .05) between False Positives and False Negatives Groups; For ADOS the estimates are for Module 1 scores; scores on Module 2 were 1.2 points higher.