Table 2.
Head Circumference and Covariates Predicting Developmental Outcomes at 24 months.
| Surgency | Effortful Control | Negative Affect | Cognitive skills | Gross motor skills | Fine motor skills | M-CHAT | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| B (SE) | β | B (SE) | β | B (SE) | β | B (SE) | β | B (SE) | β | B (SE) | β | B (SE) | β | |
| Boys | ||||||||||||||
| HC at birth | 0.00 (0.10) | 0.00 | 0.12 (0.09) | 0.17 | −0.02 (0.05) | −0.02 | −0.17 (0.22) | −0.09 | −0.26 (0.27) | −0.12 | −0.36 (0.31) | −0.14 | −0.04 (0.09) | −0.05 |
| HC growth 0–12 months | −0.44 (0.23) | −0.24* | −0.36 (0.18) | −0.23* | 0.07 (0.10) | 0.06 | 0.43 (0.44) | 0.12 | 1.15 (0.56) | 0.31* | 0.69 (0.68) | 0.15 | 0.00 (0.18) | 0.00 |
| Gestational age | −0.08 (0.08) | −0.10 | −0.14 (0.07) | −0.25 | 0.01 (0.04) | 0.03 | 0.15 (0.19) | 0.10 | 0.34 (0.25) | 0.22 | 0.44 (0.27) | 0.23 | −0.01 (0.08) | −0.02 |
| Income status | −0.02 (0.19) | −0.01 | −0.25 (0.14) | −0.10 | 0.05 (0.14) | 0.02 | 0.18 (0.47) | 0.03 | 0.22 (0.49) | 0.03 | −0.19 (0.58) | −0.02 | 0.22 (0.18) | 0.06 |
| Maternal education | −0.03 (0.05) | −0.03 | −0.02 (0.04) | −0.03 | −0.04 (0.03) | −0.08 | −0.14 (0.11) | −0.07 | 0.19 (0.15) | 0.10 | 0.02 (0.16) | 0.01 | −0.05 (0.06) | −0.06 |
| Girls | ||||||||||||||
| HC at birth | −0.03 (0.09) | −0.03 | 0.15 (0.08) | 0.20 | −0.03 (0.06) | −0.05 | 0.14 (0.21) | 0.06 | −0.11 (0.31) | −0.04 | −0.37 (0.35) | −0.13 | 0.03 (0.09) | 0.03 |
| HC growth 0–12 months | 0.11 (0.26) | 0.05 | −0.39 (0.29) | −0.24 | 0.31 (0.22) | 0.20 | 0.14 (0.61) | 0.03 | 1.43 (1.07) | 0.24 | 0.10 (1.04) | 0.16 | 0.16 (0.24) | 0.07 |
| Gestational age | 0.01 (0.08) | 0.01 | −0.11 (0.08) | −0.20 | 0.03 (0.06) | 0.07 | 0.04 (0.23) | 0.03 | 0.39 (0.32) | 0.21 | 0.58 (0.33) | 0.28 | 0.02 (0.07) | 0.03 |
| Income status | 0.51 (0.18) | 0.16 | 0.13 (0.14) | 0.05 | 0.38 (0.16) | 0.16 | −0.34 (0.50) | −0.05 | 1.36 (0.62) | 0.15 | 0.34 (0.61) | 0.03 | 0.42 (0.25) | 0.12 |
| Maternal education | 0.01 (0.03) | 0.02 | 0.08 (0.04) | 0.13 | 0.02 (0.03) | 0.04 | 0.06 (0.10) | 0.03 | 0.02 (0.15) | 0.01 | 0.20 (0.16) | 0.08 | 0.06 (0.05) | 0.07 |
Note: *p < 0.05, HC = Head Circumference; Model fit for a) the model predicting temperament: X2 (13, 756) = 21.83 (boys = 16.62; girls = 5.20); CFI = 0.99; TLI = 0.92; RMSEA = 0.04; SRMR = 0.06; b) the model predicting Bayley’s and M-CHAT scores: X2 (15, 756) = 20.54 (boys = 15.29; girls = 5.26); CFI = 0.99; TLI = 0.99; RMSEA = 0.03; SRMR = 0.06.