VOC Events	SCD Patients (N = 3368)
	N	%
Mean±SD	2.9 ± 4.4
0	1297	38.5
1	605	18.0
2	362	10.8
3	249	7.4
4	134	4.0
5	131	3.9
6	101	3.0
7	74	2.2
8	69	2.1
9	57	1.7
10+	289	8.6