Table 4.
Study | Patient cases | Number and type of observers | Geographical diversity of where observers work | CT/MRI availability for each patient case | Case selection method | Original SLICS authors involved? |
Vaccaro et al. [41] | 11 | 20 (five neurosurgeons, 15 orthopaedic spine surgeons) | Five countries | Not reported | Self-selected | Original article |
Stone et al. [39] | 50 | Five fellowship-trained spine surgeons | Two countries | 100% for CT, 70% for MRI | Consecutive case series | Yes |
Lee et al. [28] | 75 | Three (one spine surgeon, one resident, one radiologist) | South Korea only, single institution | 100% for both CT and MRI | Cases selected for clarity, only operative cases | No |
Van Middendorp et al. [44] | 51 | 12 (five fellowship-trained spine surgeons, seven spine fellows) | Nine countries | 100% CT, 41% MRI | Consecutive case series | No |
Kanagaraju et al. [24] | 34 | 13 spine surgeons from STSG ISCS | Four countries | Not reported | Consecutive case series | No |
SLICS = Subaxial Injury Classification and Severity Scale; STSG ISCS = Spine Trauma Group of the International Spinal Cord Society.