Table 3.

Frequency distribution for pain intensity improvement

Pain reduction category	Patients, number (percentage)
Less than 0%	85 (10.9)
0% to less than 15%	158 (20.2)
15% to less than 30%	83 (10.6)
30% to less than 50%	100 (12.8)
50% to less than 70%	110 (14.0)
70% or more	247 (31.5)
Total	783 (100.0)