Table 2.
Descriptive Statistics - Key Independent Variable and Outcomes
| N | Mean / % of Sample | Standard Deviation | |
|---|---|---|---|
|
|
|||
| Preacademic Stimulation - Baseline (Fall 2002) | |||
| Number of times child is read to in a week | 3305 | ||
| Never | 0.07 | ||
| Once or twice | 0.32 | ||
| Three or more times | 0.27 | ||
| Everyday | 0.35 | ||
| Helped with letters, words, numbers | 3305 | 0.91 | |
| Practiced writing the alphabet | 3300 | 0.63 | |
| Helped with songs or music | 3297 | 0.84 | |
| Worked on arts and crafts | 3288 | 0.62 | |
| Practiced writing or spelling name | 3295 | 0.71 | |
| Practiced rhyming words | 3281 | 0.38 | |
| Counted things or objects | 3298 | 0.80 | |
| Talked about size | 3300 | 0.49 | |
| Talked about calendar | 3304 | 0.58 | |
| Sum of preacademic stimulation activities | 3239 | 6.61 | 2.25 |
| Academic Achievement - Baseline (Fall 2002) | |||
| WJ Letter Word | 3577 | 91.46 | 16.82 |
| WJ Applied Problems | 3577 | 89.82 | 16.16 |
| PPVT | 3577 | 91.55 | 8.78 |
| Academic Achievement - End of First Year Treatment (Spring 2003) | |||
| WJ Letter Word | 3633 | 92.75 | 17.32 |
| WJ Applied Problems | 3633 | 89.20 | 17.99 |
| PPVT | 3633 | 92.28 | 9.57 |
Note. WJ = Woodcock-Johnson. PPVT = Peabody Picture Vocabulary Test.
Weight used = CHSPR2003WTCA.