Table 1.
Child neuropsychological scores by selected confounders.
| CPM, number of correct responses (fluid intelligence, Range: 9 to 36) |
ANT, HRT-SE (inattentiveness, Range: 81 to 676) |
3-Back, d’ (working memory, Range: 1.57 to 3.92) |
||||
|---|---|---|---|---|---|---|
| N | Median | N | Median | N | Median | |
| Cohorts | ||||||
| BiB, UK | 203 | 21* | 201 | 355.1* | 176 | 0.78* |
| EDEN, France | 195 | 33 | 187 | 237.7 | 184 | 1.90 |
| INMA, Spain | 220 | 30 | 219 | 256.5 | 217 | 1.39 |
| KANC, Lithuania | 204 | 23 | 204 | 367.7 | – | – |
| MoBa, Norway | 272 | 31 | 272 | 248.7 | 263 | 1.39 |
| Rhea, Greece | 198 | 20 | 198 | 340.9 | 179 | 0.80 |
| Maternal education | ||||||
| Low | 181 | 23* | 178 | 330.0* | 153 | 0.84* |
| Middle | 441 | 26 | 436 | 305.1 | 345 | 1.39 |
| High | 670 | 29 | 667 | 291.3 | 521 | 1.39 |
| Maternal age (years) | ||||||
| <27 | 326 | 24* | 322 | 339.3* | 216 | 1.03* |
| ≥27 & <31 | 322 | 28 | 319 | 291.4 | 256 | 1.39 |
| ≥31 & <34 | 321 | 29 | 319 | 280.5 | 272 | 1.29 |
| ≥34 | 323 | 28 | 321 | 294.1 | 275 | 1.39 |
| Trimester of conception | ||||||
| Jan–March | 415 | 27 | 415 | 305.1 | 331 | 1.39 |
| April–June | 261 | 27 | 259 | 302.2 | 217 | 1.12 |
| July–Sept | 280 | 26 | 279 | 298.0 | 201 | 1.39 |
| Oct–Dec | 336 | 28 | 328 | 294.1 | 270 | 1.29 |
| Child age (years) | ||||||
| <6.5 | 325 | 21* | 325 | 370.5* | 171 | 0.80* |
| ≥6.5 & <8 | 318 | 24 | 316 | 332.7 | 221 | 0.80 |
| ≥8 & <9 | 320 | 30 | 320 | 260.8 | 311 | 1.39 |
| ≥9 | 329 | 32 | 320 | 233.7 | 316 | 1.71 |
| Child sex | ||||||
| Male | 707 | 27 | 703 | 293.5* | 564 | 1.17 |
| Female | 585 | 27 | 578 | 309.7 | 455 | 1.39 |
Data are medians. Kruskal-Wallis equality-of-populations rank tests. * P-value<0.10.