https://www.selleckchem.com/products/2-3-butanedione-2-monoxime.html 1 ± 5.2 days postinjury (35% female, mean age = 14.5 ± 2.3 years). A total of 227 (44%) continued play after sustaining a concussion. Continuing to play postconcussion was independently associated with higher symptom severity during the initial clinical evaluation [β-coefficient = 6.144, 95% confidence interval (CI), 1.357-10.93], but not with symptom duration evaluation (β-coefficient = 1.794, 95% CI, -15.66 to 19.25). CONCLUSION Those who continued to play postconcussion presented with more severe symptoms after injury. Recognition of suspected concussion and removal from play on diagnosis confirmation may lead to better initial clinical outcomes after concussion among child and adolescent athletes.OBJECTIVE To determine whether concussed female athletes with a previous history of concussion have longer postconcussive recovery than that of male counterparts. DESIGN Retrospective cohort study. SETTING Outpatient sports medicine clinic in an academic practice. PARTICIPANTS Male and female youth, high school, and collegiate athletes (n = 431; ages = 10-21 years) who sustained a sport-related concussion (SRC). INTERVENTIONS The clinical courses of young athletes treated for concussion by 1 provider at an outpatient sports medicine clinic were retrospectively reviewed. MAIN OUTCOME MEASURES Recovery time was compared after an SRC with relationship to sex and previous concussion history. RESULTS When comparing male and female athletes with a previous history of concussion, there were no differences found (P = 0.820) in SRC recovery time. Regardless of previous concussion history, males recovered faster from an SRC compared with their female counterparts (P = 0.0002). Without regard to sex, those with no previous history of concussion recovered faster than those with a previous concussion history, although the difference was not statistically significant (P = 0.668). Athletes with a previous history of