The study also found that a lot of the children who took medication without an ADHD diagnosis had a twin who do have the disorder. ‘These children have what we would call subsyndromal, or mild, types of ADHD, and they seemed to result from families where various other children got full-blown ADHD,’ Todd explains. ‘We missed that children got these medications because they had other complications, such as carry out disorder or a learning disability.’ Reich says the eventual goal of studying twins is usually to learn what elements of ADHD are passed down in families.However, most claims noticed improvement in at least one of the three contributing factors the March of Dimes tracks. 28 Puerto and claims Rico decreased the %age of women of childbearing age who smoke cigarettes; 17 states and the District of Columbia reduced the %age of uninsured females of childbearing age; 37 states and Puerto Rico lowered the past due preterm birth rate, infants born between 34 and 36 weeks gestation. There are known strategies that can lower the risk of an early birth, such as for example smoking cessation, preconception care, early prenatal care, progesterone treatments for women with a past history of preterm birth, avoiding multiples from fertility treatments and avoiding unneeded c-sections and inductions before 39 weeks of pregnancy.