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Table 1: Scoring of the claw sign by 2 readers
Neuroradiologist 1 Neuroradiologist 2
Claw Score Group 1 (n = 33) Group 2 (n = 20) Group 3 (n = 20) Claw Score Group 1 (n = 33) Group 2 (n = 20) Group 3 (n = 20)
1 26 1 12 1 19 0 10
2 7 0 7 2 10 3 6
3 0 2 1 3 3 4 4
4 0 17 0 4 1 13 0

Neuroradiologist 1				Neuroradiologist 2
Claw Score	Group 1 (n = 33)	Group 2 (n = 20)	Group 3 (n = 20)	Claw Score	Group 1 (n = 33)	Group 2 (n = 20)	Group 3 (n = 20)
1	26	1	12	1	19	0	10
2	7	0	7	2	10	3	6
3	0	2	1	3	3	4	4
4	0	17	0	4	1	13	0