Handedness in the Helsinki Ultrasound Trial
Article first published online: 25 MAY 2011
Copyright © 2011 ISUOG. Published by John Wiley & Sons, Ltd.
Ultrasound in Obstetrics & Gynecology
Volume 37, Issue 6, pages 638–642, June 2011
How to Cite
Heikkilä, K., Vuoksimaa, E., Oksava, K., Saari-Kemppainen, A. and Iivanainen, M. (2011), Handedness in the Helsinki Ultrasound Trial. Ultrasound Obstet Gynecol, 37: 638–642. doi: 10.1002/uog.8962
- Issue published online: 25 MAY 2011
- Article first published online: 25 MAY 2011
- Accepted manuscript online: 8 FEB 2011 01:48PM EST
- Manuscript Accepted: 31 JAN 2011
- prenatal ultrasound;
- randomized trial
To determine whether exposure to prenatal ultrasound increases non-right-handedness in boys.
The association between exposure to prenatal ultrasound and handedness was tested, using logistic regression analysis, in the Helsinki Ultrasound Trial data. We applied an intention-to-treat approach in this analysis of a subset of 4150 subjects whose parents answered a follow-up questionnaire on handedness when the children were aged 13–15 years.
The odds ratio for non-right-handedness of children who had been exposed to prenatal ultrasound was 1.16 (0.98–1.37) for all subjects, 1.12 (0.89–1.41) for boys and 1.24 (0.97–1.58) for girls.
We could not confirm the hypothesis that prenatal ultrasound exposure and handedness are associated. Our findings were independent of the particular definition of handedness used, whether it was considered according to the writing hand alone or defined using a laterality quotient. Copyright © 2011 ISUOG. Published by John Wiley & Sons, Ltd.