<prompt> Best predictor in the GCS:-Eye openingMotor responseVerbal responseAll  <response>: Best indicator of outcome - Motor response Glasgow Coma Scale GCS Eye Opening Verbal response Best Motor Response Spontaneous 4 Oriented 5 Obey commands 6 To loud voice 3 Confused, disoriented 4 Localises pain 5 To pain 2 Inappropriate words 3 Flexion withdrawal to pain 4 No response 1 Incomprehensible sounds 2 Abnormal flexion posturing 3 No response 1 Abnormal Extension posturing 2 No response 1 On the basis of GCS score 13 -15 - Mild head injury 9-12 - Moderate head injury 8 - Severe head injury . 