The real number of weeks of gestation was dependant on ultrasound examination or, if ultrasonography was unavailable, by the recorded date of the first day of the last menstrual period. Since 1990, Swedish women have already been offered an ultrasound exam routinely, early in the second trimester generally, for the purpose of estimating the full weeks of gestation; approximately 95 percent accept this offer.22 Information on large-for-gestational-age group infants, small-for-gestational-age infants, preterm births, stillbirths, and neonatal deaths was produced from the Medical Birth Register.His problem, however, turned out to be the electronic health record . Investigating the main causes, Wachter discovers style flaws, such as defaulting to certain units for medicine dosing and alerts rendered meaningless by their sheer quantity. But he concludes that the mistake stemmed less from the EHR itself than from its effects on our collective psychology. There’s the essential care doctor who, unable to identify new information in daily notes, has begun printing them out and keeping two superimposed pages up to the light to observe what’s changed. I possibly could be youthful.