Pre-eclampsia/eclampsia is associated with small differences in test scores in mathematics in the 4 th grade with reported differences of less than a tenth of a standard deviation indicating that the estimated effect is not very large.
Meðgöngueitrun/meðgöngukrampi tengist lægri árangri í stærðfræði í fjórða bekk grunnskóla, en munurinn er minni en einn tíundi úr staðalfráviki sem gefur til kynna lítil áhrif.