Table IV.
Differences in language development at 6 and 24 months of age∗
| Outcomes | Standard arm n = 60 | Early literacy arm n = 60 | P value |
|---|---|---|---|
| 6-mo PLS-5 score† (SD) | n = 46 | n = 53 | |
| Standard total score (SD) | 96.9 (7.1) | 96.3 (6.7) | .64 |
| Auditory comprehension score (SD) | 103 (7.5) | 101 (7.2) | .20 |
| Expressive communication score (SD) | 92 (9.6) | 92 (9.3) | .75 |
| 24-mo PLS-5 score† (SD) | n = 44 | n = 49 | |
| Standard total score (SD) | 93.9 (18.5) | 91.1 (13.4) | .40 |
| Auditory comprehension score (SD) | 95.2 (14.0) | 93.7 (16.5) | .64 |
| Expressive communication score (SD) | 89.3 (9.2) | 89.8 (11.1) | .89 |
∗
Participants were age <1 month old, Medicaid-eligible, and attended a participating primary care practice.
†
The PLS-5 is a validated measure of expressive and auditory language function among children from birth through 7 years of age.