Table 1.
Mean (SD) age, SES, nonverbal IQ (NVIQ) and gender for the TD, FR, SLI and FR-SLI groups (including results of between groups analyses)
| TD | FR | SLI | FR-SLI | Significant differences | |
|---|---|---|---|---|---|
| N | 69 | 83 | 32 | 29 | |
| T1 Age (months) | 44.59 (3.12) | 45.17 (3.47) | 43.56 (2.09) | 45.07 (3.24) | F 2.15, NS |
| T2 Age (months) | 55.46 (3.21) | 56.64 (3.85) | 55.19 (2.58) | 56.76 (3.52) | F 2.56, NS |
| Gender (% males) | 49 | 58 | 69 | 72 | χ2 6.74, NS |
| SES (postcode% rank1) | 71.97 (27.46) | 62.19 (26.67) | 52.62 (30.18) | 50.84 (30.50) |
F 5.57, p < .05 TD > LI & FRLI |
| NVIQ2 | 115.61 (13.93) | 107.90 (14.84) | 96.07 (13.10) | 101.03 (10.15) |
F 16.82, p < .05 TD > FR > (LI = FRLI) |
1
SES based on postcode in UK, relative rank according to deprivation value; Lower = more deprived (Department of Communities and Local Government, Indices of Multiple Deprivation 2007).
2
NVIQ is mean standard score, two WPPSI-III Performance IQ subtests.