Table 2. Comparison of Numeric Rating Scale for Pain and Neck Disability Index Score Summaries at Six Time Points.

Percentages in parenthesis illustrates proportion with significant pain relief (≥ 50%) from baseline. ^*indicates significant difference with baseline values (P < 0.01) with in the group. ^#Group by Time Interaction-There was no significant difference between groups at 3 months, 6 months, 12 months, 18 months and 24 months.