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TABLE 1: Infarct volumes (cm³) distributed according to pial collateral score and recanalization result
Collateral Score Complete^a Recanalization Mean (σ, n) Partial and No^b Recanalization Mean (σ, n) Total Mean (σ, n)
1 2.53 (2.92, 12) 68.55 (53.59, 15) 39.23 (51.67, 27)
2 32.47 (12.90, 3) 41.93 (25.09, 6) 38.78 (21.38, 9)
3 81.66 (31.13, 5) 122.04 (54.83, 5) 101.85 (47.11, 10)
4 and 5 154.28 (136.04, 4) 392.9 (125.209, 3) 256.54 (175.35, 7)
1 and 2 8.52 (13.57, 15) 60.98 (48.17, 21) 39.12 (45.69, 36)
3–5 113.93 (94.27, 9) 223.61 (160.78, 8) 165.55 (137.61, 17)
    Total 48.05 (76.95, 24) 105.84 (116.58, 29) 79.67 (103.83, 53)
a P = .003, Wilcoxon rank sum test for statistically significant increase in infarct volume with increase in pial collateral score.
b P =.0067, Wilcoxon rank sum test for statistically significant increase in infarct volume with increase in pial collateral score.