Fig. 4From: Impact of Cushing’s sign in the prehospital setting on predicting the need for immediate neurosurgical intervention in trauma patients: a nationwide retrospective observational studyPositive predictive value of LT-BI. Positive predictive value of LT-BI according to the combination of pSBP and pHR. LT-BI: life-threatening brain injuries requiring immediate neurosurgical intervention, pSBP: systolic blood pressure in the prehospital setting, pHR: heart rate in the prehospital setting, PPV: positive predictive valueBack to article page