HELPDESK: ANSWERSWhat sideline tests help diagnose concussion in athletes?Limsiaco, Krystal MD; Sineath, Marvin Jr MDAuthor Information Memorial Health FMR Savannah, GA Evidence-Based Practice: June 2018 - Volume 21 - Issue 6 - p E13-E14 doi: 10.1097/01.EBP.0000545175.43133.d2 Buy Metrics Abstract EVIDENCE-BASED ANSWER In patients suspected of having a concussion after a nontrivial head injury, the presence of headache alone has a sensitivity of 0.76 to 1.0 and a specificity of 0.83 to 0.94 (positive likelihood ratio [LR+] 4.5–17, negative likelihood ratio [LR-] 0–0.29). The Concussion Symptom Inventory and the symptom score portion of the Sport Concussion Assessment Tool 2 (SCAT2) likely have similar accuracy. The King-Devick test, an oculomotor test, has a sensitivity of 0.75 to 1.0 and a specificity of 0.91 to 1.0 (LR+ 8.3 to “rule in” and LR- 0 to 0.27). A 3.5-point decrease compared with baseline on the full SCAT2 multimodal test is 0.96 sensitive and 0.81 specific (LR+ 5 and LR- 0.05) (SOR: B, systematic reviews of low-quality cohort studies). © Copyright 2018 Family Physicians Inquiries Network, Inc.