Instead, they involved assignments to greatly help students around the age of 12 see the drawbacks to sexual activity at their age. It included having them list the pros and cons themselves, and it discovered their cons much outnumbered the pros. The February edition of Archives of Pediatrics&Adolescent Medicine The study appears in. It had been funded by the National Institute of Mental Health insurance and included 662 black children in Philadelphia. The college students were assigned to one of four choices: eight hour-long abstinence-only classes; safe-sex classes; classes incorporating both techniques; or classes generally healthy behavior. Results for the first three classes were weighed against the group that had only the overall health classes. That was the control group the analysis used for comparison.Study Measurements and Outcomes The principal outcome was a composite of ischemic stroke, acute myocardial infarction, or venous thromboembolism. We recognized these outcomes using validated diagnosis-code algorithms which were previously shown to have a positive predictive worth of 90 percent or even more .18-20 To maximize accuracy, we limited our case ascertainment to stroke and myocardial infarction leading to hospitalization but included discharges from the emergency department and also hospitalizations for venous thromboembolism, since this condition is currently often managed in the outpatient setting.21 To spotlight incident outcomes and avoid bias from the effects of antithrombotic therapy prescribed after the initial thrombotic event, we included no more than one thrombosis diagnosis for every patient; however, in a sensitivity evaluation, we included thrombosis diagnoses subsequent to the index event also.