Comparison by two observers of different methods for measuring haemorrhage volume (cm3) on CT scans: ABC/2 versus modified ABC/2 versus SAS
| Haematoma volume | Difference | p Value | ICC | |
|---|---|---|---|---|
| Observer 1 n=548 | ||||
| ABC/2 12.77 (16.32) | Modified ABC/2 8.90 (9.21) | 3.96 | <0.0001 | 0.84 |
| ABC/2 12.77 (16.32) | SAS 12.76 (13.06) | −0.01 | 1.00 | |
| SAS 12.76 (13.06) | Modified ABC/2 8.90 (9.21) | 3.97 | <0.0001 | |
| Observer 2 n=193 | ||||
| ABC/2 12.05 (12.40) | Modified ABC/2 9.70 (10.05) | 2.67 | <0.0001 | 0.96 |
| ABC/2 12.05 (12.40) | SAS 11.08 (11.38) | 0.05 | 0.89 | |
| SAS 11.08 (11.38) | Modified ABC/2 9.70 (10.05) | 1.38 | <0.0001 | |
Data are mean (SD), difference (Δ) in haemorrhage volume between ABC/2 and SAS and ICC.
ICC, intraclass correlation coefficient; SAS, semiautomated segmentation.