Table 4 Comparison between severe and very severe TBI and headache at follow-up [24, 25]
Severe TBI: GCS ≤ 8; coma duration 3–14 days—n = 77 |
 no. of patients with chronic PTH 18/77 (23.4%) |
Very severe TBI–GCS ≤ 8—Coma duration > 15–60 days—n = 300 |
 no. of patients with chronic PTH 13/300 (4.3%) |