Table 2.
Relative body size at birth, and up to 56 months of age and ADHD-symptoms
| Model I | Model II | |||||
|---|---|---|---|---|---|---|
| Effect size in SD units | (95% CI) | P-value | Effect size in SD units | (95% CI) | P-value | |
| At birth | ||||||
| Weight | -0.39 | (-0.65 to -0.13) | 0.003 | -0.41 | (-0.69 to -0.14) | 0.003 |
| Length | -0.32 | (-0.58 to -0.06) | 0.02 | -0.33 | (-0.61 to -0.05) | 0.02 |
| Head circumference | -0.40 | (-0.68 to -0.12) | 0.01 | -0.36 | (-0.65 to -0.07) | 0.01 |
| BMI | -0.33 | (-0.59 to -0.07) | 0.01 | -0.33 | (-0.60 to -0.06) | 0.02 |
| At 5 months | ||||||
| Weight | -0.16 | (-0.45 to 0.13) | 0.28 | -0.19 | (-0.53 to 0.15) | 0.27 |
| Length | -0.12 | (-0.42 to 0.18) | 0.44 | -0.1 | (0.46 to 0.26) | 0.57 |
| Head circumference | -0.39 | (-0.69 to -0.10) | 0.01 | -0.31 | (-0.61 to -0.01) | 0.04 |
| BMI | -0.13 | (-0.43 to 0.16) | 0.37 | -0.17 | (-0.50 to 0.15) | 0.29 |
| At 20 months | ||||||
| Weight | -0.11 | (-0.43 to 0.21) | 0.49 | -0.13 | (-0.46 to 0.20) | 0.44 |
| Length | -0.05 | (-0.36 to 0.26) | 0.73 | -0.02 | (-0.35 to 0.31) | 0.90 |
| Head circumference | -0.36 | (-0.68 to -0.05) | 0.02 | -0.29 | (-0.61 to 0.04) | 0.08 |
| BMI | -0.14 | (-0.46 to 0.19) | 0.42 | -0.19 | (-0.52 to 0.14) | 0.26 |
| At 56 months | ||||||
| Weight | -0.04 | (-0.36 to 0.25) | 0.72 | -0.1 | (-0.43 to 0.24) | 0.57 |
| Length | 0.09 | (-0.22 to 0.40) | 0.56 | 0.15 | (-0.20 to 0.51) | 0.40 |
| Head circumference | -0.40 | (-0.71 to -0.10) | 0.01 | -0.34 | (-0.65 to -0.03) | 0.03 |
| BMI | -0.27 | (-0.57 to 0.04) | 0.09 | -0.34 | (-0.67 to -0.01) | 0.04 |
ADHD = Attention-Deficit/Hyperactivity Disorder, BMI = Body-mass index
Model I: After controlling for child's sex; Model II: after controlling for child's sex, gestational age, admission to neonatal ward, multiple pregnancy, mother's smoking during pregnancy, parental education, maternal age, and maternal height.