Table 4 Baseline imaging characteristics of the participants in the MATCH study
Characteristics | All patients | Single-disciplinary cohort (2011.08–2021.04) | Multidisciplinary cohort (2018.06–2021.04) | P value |
|---|---|---|---|---|
No. of patients | N = 3241 | N = 2741 | N = 500 |  |
Location, supratentorial, n (%) | 2844 (87.8) | 2417 (88.2) | 427 (85.4) | 0.081 |
Maximum diameter (cm), median, IQR | 2.9 (2.0, 4.3) | 2.9 (2.0, 4.3) | 3.0 (2.1, 4.3) | 0.468 |
Eloquence, n (%) | Â | Â | Â | 0.149 |
 Yes | 1794 (55.4) | 1532 (55.9) | 262 (52.4) |  |
 No | 1447 (44.6) | 1209 (44.1) | 238 (47.6) |  |
Feeding artery dilation, n (%) | Â | Â | Â | 0.526 |
 Yes | 1499 (46.3) | 1275 (46.9) | 224 (45.3) |  |
 No | 1714 (52.9) | 1444 (53.1) | 270 (54.7) |  |
 Missing | 28 (0.9) | 22 (0.8) | 6 (1.2) |  |
No. of feeding artery, median, IQR | 2 (1, 3) | 2 (1, 3) | 2 (1, 3) | 0.547 |
 Missing | 29 (0.9) | 22 (0.8) | 7 (1.4) |  |
Watershed AVM, n (%) | Â | Â | Â | 0.984 |
 Yes | 886 (27.3) | 749 (27.5) | 137 (27.5) |  |
 No | 2339 (72.2) | 1978 (72.5) | 361 (72.5) |  |
 Missing | 16 (0.5) | 14 (0.5) | 2 (0.4) |  |
Flow-related aneurysm, n (%) | Â | Â | Â | 0.830 |
 Yes | 539 (16.6) | 458 (16.9) | 81 (16.5) |  |
 No | 2670 (82.4) | 2259 (83.1) | 411 (83.5) |  |
 Missing | 32 (1.0) | 24 (0.9) | 8 (1.6) |  |
Diffuse nidus, n (%) | Â | Â | Â | 0.755 |
 Yes | 1158 (35.7) | 975 (35.9) | 183 (36.6) |  |
 No | 2060 (63.6) | 1743 (64.1) | 317 (63.4) |  |
 Missing | 23 (0.7) | 23 (0.8) | 0 (0.0) |  |
Deep venous drainage, n (%) | Â | Â | Â | 0.159 |
 Yes | 1258 (38.8) | 1078 (39.6) | 180 (36.3) |  |
 No | 1957 (60.4) | 1641 (60.4) | 316 (63.7) |  |
 Missing | 26 (0.8) | 22 (0.8) | 4 (0.8) |  |
No. of draining vein, median, IQR | 1 (1, 2) | 1 (1, 2) | 1 (1, 2) | 0.103 |
 Missing | 29 (0.9) | 22 (0.8) | 7 (1.4) |  |
Drainage vein stenosis, n (%) | Â | Â | Â | 0.622 |
 Yes | 506 (15.6) | 432 (15.9) | 74 (15.0) |  |
 No | 2706 (83.5) | 2287 (84.1) | 419 (85.0) |  |
 Missing | 29 (0.9) | 22 (0.8) | 7 (1.4) |  |
Venous pouches, n (%) | Â | Â | Â | 0.560 |
 Yes | 506 (15.6) | 424 (15.6) | 82 (16.6) |  |
 No | 2706 (83.5) | 2295 (84.4) | 411 (83.4) |  |
 Missing | 29 (0.9) | 22 (0.8) | 7 (1.4) |  |
Spetzler-Martin Grade, median, IQR | 3 (2, 3) | 3 (2, 3) | 3 (2, 3) | 0.348 |
 Missing | 26 (0.8) | 22 (0.8) | 4 (0.8) |  |
Lawton-Young Grade, median, IQR | 5 (4, 6) | 5 (4, 6) | 5 (4, 6) | 0.788 |
 Missing | 27 (0.8) | 23 (0.8) | 4 (0.8) |  |