A Prospective Six-Month Study of Chronic Pain Sufferers: A Novel OTC Neuromodulation Therapy

Table 4

VAS scores of the study sample categorized by mild, moderate, and severe levels at baseline and at the four assessment periods.

Pain score (VAS)	Fraction of study sample
	Baseline (N = 240)	7 days (N = 240)	3 months (N = 222)	4 months (N = 208)	6 months (N = 209)	Last reported (N = 240)
0–3 (mild pain) (%)	0	70	67	61	58	57
4–6 (moderate pain) (%)	9	27	30	35%	36	37
7–10 (severe pain) (%)	91	3	3	4	6	6
Average sample VAS	8.23	2.86	2.96	3.13′	3.25	3.31

The last column is data from the last-observed value of all subjects.