Table 2.

Frequency (percent) of pain intensity ratings for the four groups.

Pain intensity rating (0-10)	Wheel 8 (n=102), n (%)	Wheel 2 (n=92), n (%)	Letter wheel (n=102), n (%)	No wheel (n=87), n (%)
0	0 (0.0)	0 (0)	0 (0.0)	0 (0)
1	0 (0.0)	0 (0)	0 (0.0)	0 (0)
2	0 (0.0)	3 (3)	0 (0.0)	0 (0)
3	2 (2.0)	6 (7)	4 (4.0)	1 (1)
4	6 (6.0)	12 (13)	8 (8.0)	5 (6)
5	15 (15.0)	9 (10)	13 (13.0)	7 (8)
6	12 (12.0)	25 (27)	20 (20.0)	18 (21)
7	12 (12.0)	16 (17)	27 (27.0)	26 (30)
8	40 (39.0)	15 (16)	18 (18.0)	20 (33)
9	9 (9.0)	3 (3)	10 (10.0)	8 (9)
10	6 (6.0)	3 (3)	2 (2.0)	2 (2)