(June 2, 2009 - Insidermedicine) From Oxford - According to research in the journal Neurology, half of stroke recurrences happen within the first week. In a study of over 1,200 people who had suffered a transient ischemic attack or stroke, researchers found that 5.1% had another stroke within 24 hours. Meanwhile, early recurrences accounted for 52% of strokes that occurred within 7 days, and 42% that occurred during the first 30 days.

From Nashville - According to research in the Journal of the American Medical Association, group therapy can help at-risk teens avoid depression. In a study of over 300 adolescents, researchers found that the risk of depression was 37% lower after cognitive behavioral therapy than after usual care for those with a history of depression. The researchers note that parental depression is one of the strongest risk factors for adolescent depression.

And finally, from Sweden - According to another study in JAMA, extremely preterm infants have a high likelihood of survival with aggressive neonatal care. Among over 700 infants born in Sweden before 27 weeks of gestation, 91% were admitted to neonatal intensive care units, and 70% survived to one year. However, infants have a much higher chance of survival if they are born at week 26 than at week 22.

For Insidermedicine in 60, I'm Dr. Susan Sharma.