Table 2.
Mean z score difference in age- and sex-corrected language and reading variables at HV2 and HV3 between children with and without a history of reported language difficulties.
| Variable | t (df) | p (two-tailed) | Mean difference |
|---|---|---|---|
| MLU-C | 3.02 (376) | .003 | .388 |
| NTW | 3.39 (322) | .001 | .460 |
| NDW | 3.40 (322) | .001 | .463 |
| TNC | 1.69 (322) | .093 | .232 |
| DSS | 2.80 (338) | .005 | .384 |
| BNT-2 | 5.52 (373) | .000 | .692 |
| BNT-3 | 4.02 (49)a | .000 | .791 |
| SB-Vocab-2 | 2.90 (375) | .004 | .372 |
| SB-Vocab-3 | 3.20 (245) | .002 | .534 |
| PA-2 | 3.11 (375) | .002 | .400 |
| PA-3 | 3.82 (246) | .000 | .589 |
| WA-2 | 3.75 (366) | .000 | .489 |
| WA-3 | 6.13 (243) | .000 | .981 |
| WID-2 | 3.37 (368) | .001 | .436 |
| WID-3 | 5.06 (244) | .000 | .829 |
| PC-2 | 3.27 (341) | .001 | .442 |
| PC-3 | 4.29 (230) | .000 | .721 |
Note. HV2 = second home visit; HV3 = third home visit.
a
Reduced degrees of freedom are due to unequal variances.