Table 5.
Change in SES Gap on Bayley-III Z-Scores after the Inclusion of Potential Mediators, (τ-τ’), by Age Group.
| Step 0: SES gap | Step 1: Mother and father education entered | Step 4: Home environment index entered | ||||
|---|---|---|---|---|---|---|
| τ | (95% CI) | (τ−τ1’) | (95% CI) | (τ3’−τ4’) | (95% CI) | |
| I. Children 6–18 months (N = 451) | ||||||
| Cognition | 0.26 | (−0.01–0.53) | 0.013 | (−0.122–0.155) | 0.048 | (−0.008–0.120) |
| Receptive language | 0.20 | (−0.04–0.45) | 0.176 | (0.063–0.293)** | 0.059 | (0.012–0.134)* |
| Expressive language | 0.43 | (0.16–0.70)** | 0.149 | (0.005–0.298)* | 0.012 | (−0.042–0.079) |
| Fine motor | 0.25 | (0.01–0.49)* | 0.001 | (−0.157–0.171) | 0.039 | (−0.008–0.117) |
| Socio-emotional | 0.30 | (0.03–0.57)* | 0.055 | (−0.080–0.189) | −0.005 | (−0.056–0.047) |
| II. Children 19–30 months (N = 460) | ||||||
| Cognition | 0.55 | (0.32–0.78)*** | 0.251 | (0.063–0.447)** | 0.147 | (0.072–0.239)*** |
| Receptive language | 0.30 | (0.06–0.55)* | 0.195 | (0.025–0.377)* | 0.172 | (0.087–0.274)*** |
| Expressive language | 0.41 | (0.17–0.65)*** | 0.199 | (0.048–0.373)* | 0.149 | (0.066–0.257)*** |
| Fine motor | 0.13 | (−0.09–0.36) | 0.056 | (−0.132–0.238) | 0.094 | (−0.000–0.182)** |
| Socio-emotional | 0.20 | (−0.04–0.45) | 0.066 | (−0.102,0.229) | 0.165 | (0.079–0.267)*** |
| III. Children 31–42 months (N = 419) | ||||||
| Cognition | 0.81 | (0.55 –1.08)*** | 0.367 | (0.204–0.535)*** | 0.100 | (0.044–0.171)*** |
| Receptive language | 0.76 | (0.51 –1.01)*** | 0.379 | (0.217–0.576)*** | 0.105 | (0.034–0.194)** |
| Expressive language | 0.68 | (0.43–0.94)*** | 0.354 | (0.209–0.539)*** | 0.117 | (0.047–0.204)*** |
| Fine motor | 0.40 | (0.13–0.68)** | 0.318 | (0.161–0.492)*** | 0.086 | (0.018–0.177)* |
| Socio-emotional | 0.38 | (0.15–0.62)** | 0.150 | (0.038–0.274)* | 0.099 | (0.031–0.179)* |
Notes. ***p < 0.001, **p < 0.01, *p < 0.05. Bootstrapped 95% Confidence Intervals (CIs) adjusted for clustering at the block level (n = 500 replications).