Abstract:
BACKGROUND:Due to physiological demands, children and premenopausal women are at risk of developing iron deficiency. In premenopausal women, the risk may be further increased by repeated whole blood donations. Short-term consequences of iron deficiency in infancy include impaired cognitive development and lower IQ scores. This prompts concern that maternal iron deficiency before or during pregnancy may have long-term consequences for the offspring, for example, by affecting scholastic attainment. The aim of this study was to evaluate if prepregnancy donation intensity is associated with offspring scholastic attainment measured as grade averages in standardized national written examinations in Denmark. STUDY DESIGN AND METHODS:By using the Danish personal identification number as key, we obtained information on donation intensity before pregnancy, school grade, year of graduation, age of the students, students' sex, and parental length of education and income from various nationwide registers. Linear regression analyses were performed, with grade average as outcome and maternal donation status as explanatory variable (nondonor, n = 177,078; low-frequency donor, n = 4995 [one to five donations in the 3 years before pregnancy]; high-frequency donor, n = 414 [six or more donations in the 3 years before pregnancy), and further adjusted for the covariates listed above. RESULTS:Adjusted normalized (mean, 0; standard deviation [SD], 1) test scores were statistically significantly higher for children of active female donors compared with children of nondonors (SD, 0.104; 95% confidence interval, 0.079-0.129). We observed no differences in scholastic attainment between children of low-frequency donors and high-frequency donors. CONCLUSION:Prepregnancy donation intensity, as a proxy of iron stores, is not associated with subsequent offspring scholastic attainment.
journal_name
Transfusionjournal_title
Transfusionauthors
Rigas AS,Pedersen OB,Rostgaard K,Sørensen E,Erikstrup C,Hjalgrim H,Ullum Hdoi
10.1111/trf.15193subject
Has Abstractpub_date
2019-05-01 00:00:00pages
1717-1722issue
5eissn
0041-1132issn
1537-2995journal_volume
59pub_type
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