Table 2.
Consistency in affectedness at the ages of 4 and 6 years by phenotype and affectedness criteria.
| Outcome | −1.00 SD
|
−1.25 SD
|
−1.50 SD
|
|||
|---|---|---|---|---|---|---|
| Affected at 4 and 6 years of age | Unaffected at 4 and 6 years of age | Affected at 4 and 6 years of age | Unaffected at 4 and 6 years of age | Affected at 4 and 6 years of age | Unaffected at 4 and 6 years of age | |
| PPVT-III Vocabulary N = 1,110 |
5.05% N = 56 |
78.56% N = 872 |
2.79% N = 31 |
86.58% N = 961 |
1.17% N = 13 |
92.43% N = 1,026 |
| TOLD-P:3 Spoken Language N = 1,097 |
19.60% N = 215 |
56.24% N = 617 |
10.21% N = 112 |
70.65% N = 775 |
3.19% N = 35 |
83.32% N = 914 |
| TOLD-P:3 Semantics N = 1,097 |
12.22% N = 134 |
57.52% N = 631 |
6.02% N = 66 |
74.38% N = 816 |
3.01% N = 33 |
81.95% N = 899 |
| TOLD-P:3 Syntax N = 1,097 |
16.86% N = 185 |
58.61% N = 643 |
7.38% N = 81 |
73.02% N = 801 |
4.65% N = 51 |
79.31% N = 870 |
| GFTA-2 Speech N = 1,099 |
1.91% N = 21 |
92.45% N = 1,016 |
1.18% N = 13 |
95.91% N = 1,054 |
0.82% N = 9 |
96.72% N = 1,063 |
| MLU N = 1,086 |
5.52% N = 60 |
68.78% N = 747 |
3.41% N = 37 |
77.16% N = 838 |
2.21% N = 24 |
85.27% N = 926 |
| TEGI Composite N = 1,078 |
17.90% N = 193 |
54.45% N = 587 |
15.58% N = 168 |
60.67% N = 654 |
12.52% N = 135 |
66.88% N = 721 |
| TEGI Screener N = 1,088 |
13.42% N = 146 |
61.03% N = 664 |
10.66% N = 116 |
66.36% N = 722 |
8.82% N = 96 |
70.77% N = 770 |
| CMMS Nonverbal IQ N = 1,114 |
1.26% N = 14 |
84.47% N = 941 |
0.09% N = 1 |
92.46% N = 1030 |
0.00% N = 0 |
96.86% N = 1,079 |
Note. Ns on the far-left column only include those with data at both 4 and 6 years of age. Ns inside middle cells do not include participants who switched affectedness status between 4 and 6 years of age. PPVT-III = Peabody Picture Vocabulary Test–III; TOLD-P:3 = Test of Language Development–Primary: Third Edition; GFTA-2 = Goldman-Fristoe Test of Articulation–Second Edition; MLU = mean length of utterance as calculated by SALT software; TEGI = Rice–Wexler Test of Early Grammatical Impairment; CMMS = Columbia Mental Maturity Scale.