Summary of variance explained by regression models predicting language and reading measures at age 7–8 years
| Block 1 Covariates* | Block 2 Age at diagnosis | Block 3 Severity of hearing impairment | |||||||
|---|---|---|---|---|---|---|---|---|---|
| R2 change | F | p | R2 change | F | p | R2 change | F | p | |
| *Covariates: non-verbal IQ, paternal occupational prestige, maternal education, family functioning (all entered as continuous variables). | |||||||||
| †Transformed scores (loge). | |||||||||
| CELF | |||||||||
| Total | 0.21 | 3.0 | 0.03 | 0.04 | 2.4 | 0.13 | 0.29 | 26.7 | <0.001 |
| Receptive | 0.24 | 3.7 | 0.01 | 0.03 | 1.9 | 0.17 | 0.26 | 24.2 | <0.001 |
| Expressive | 0.15 | 1.9 | 0.12 | 0.04 | 2.2 | 0.15 | 0.28 | 22.9 | <0.001 |
| PPVT | 0.15 | 2.0 | 0.11 | 0.07 | 4.0 | 0.05 | 0.25 | 20.7 | <0.001 |
| Goldman-Fristoe† | 0.04 | 0.5 | 0.72 | 0.03 | 1.4 | 0.25 | 0.12 | 6.7 | 0.01 |
| Intelligibility† | 0.11 | 1.4 | 0.26 | 0.01 | 0.7 | 0.42 | 0.13 | 7.2 | 0.01 |
| RPT | 0.27 | 4.0 | 0.01 | 0.003 | 0.1 | 0.70 | 0.05 | 3.3 | 0.08 |