Table 5.
Summary of ROC Curve Statistic Comparisons of the Revised Get Ready To Read! and the Individual Growth and Development Indicators with the Test of Preschool Early Literacy
| Indices of Accuracy |
||||||||
|---|---|---|---|---|---|---|---|---|
| Comparison | Area Under Curve |
Sensitivity | Specificity | Negative Predictive Power |
Positive Predictive Power |
Likelihood Ratio |
Optimal Cut Score |
% Children Below Cut Score |
| TOPEL Early Literacy Index | ||||||||
| GRTR-R | .86*** | .90 | .69 | .97 | .38 | 2.90 | 12 | 41% |
| IGDIs Score | .73*** | .93 | .38 | .97 | .24 | 1.50 | 28 | 67% |
| IGDIs PA | .68** | .90 | .29 | .93 | .21 | 1.27 | 10 | 74% |
| IGDIs PN | .67** | .93 | .27 | .95 | .21 | 1.27 | 24 | 77% |
| TOPEL Print Knowledge | ||||||||
| GRTR-R | .84*** | .92 | .56 | .96 | .35 | 2.09 | 14 | 53% |
| IGDIs Score | .76*** | .94 | .40 | .97 | .29 | 1.57 | 28 | 67% |
| IGDIs PA | .69** | .94 | .17 | .92 | .23 | 1.13 | 13 | 85% |
| IGDIs PN | .70*** | .92 | .34 | .94 | .26 | 1.39 | 23 | 71% |
| TOPEL Definitional Vocabulary | ||||||||
| GRTR-R | .75*** | .95 | .15 | .96 | .13 | 1.12 | 19 | 86% |
| IGDIs Score | .71** | .95 | .06 | .90 | .11 | 1.01 | 40 | 94% |
| IGDIs PA | .60 | .90 | .08 | .87 | .11 | .98 | 15 | 92% |
| IGDIs PN | .71** | .90 | .31 | .96 | .14 | 1.30 | 23 | 71% |
| TOPEL Phonological Awareness | ||||||||
| GRTR-R | .68*** | .93 | .23 | .87 | .36 | 1.21 | 18 | 82% |
| IGDIs Score | .64** | .93 | .13 | .79 | .33 | 1.07 | 36 | 89% |
| IGDIs PA | .60* | .91 | .18 | .81 | .34 | 1.11 | 13 | 85% |
| IGDIs PN | .62** | .93 | .19 | .85 | .35 | 1.15 | 26 | 85% |
Note. N = 176. TOPEL = Test of Preschool Early Literacy; GRTR-R = Revised Get Ready To Read!; IGDIs = Individual Growth and Development Indicators; PA = Phonological Awareness; PN = Picture Naming.
*
p < .05.
**
p < .01.
***
p < .001.
Note. In the published version of this table, the column labels for Negative Predictive Power and Positive Predictive Power are reversed.