Variable | Group 1 | Group 2 | P value |
---|---|---|---|
Compressibility (firm/soft) | 21/13 | 36/9 | 0.07a |
Echogenicity (hyperechoic/isoechoic/hypoechoic) | 1/14/19 | 2/17/26 | 0.91b |
Mean vein diameter (mm) | 5.6 ± 1.7 | 5.4 ± 1.5 | 0.49c |
Attachment of thrombus to vein wall | Attached, 34; free-floating, 0 | Attached, 44; free-floating, 1 | 1.00a |