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. 2021 Sep 1;284:117404. doi: 10.1016/j.envpol.2021.117404

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.