Table 2 Brief Pain Inventory scores

Mean ± SD (out of 10)

Mean ± SD (out of 10)

Mean (95 % CI), ES (95 % CI)

Baseline

 Severity

 Interference

6.71 ± 2.32

6.75 ± 2.41

6.37 ± 2.16

6.44 ± 2.11

Week 6

 Severity

 Interference

3.99 ± 2.44*

3.13 ± 2.32**

6.09 ± 2.02

5.77 ± 2.07

2.44(0.6, 4.3), ES = 0.94(0.45, 1.41)

2.95(0.73, 5.2), ES = 1.2(0.7, 1.69)

Week 12

 Severity

 Interference

4.34 ± 2.86

4.23 ± 2.72**

6.05 ± 2.34

5.95 ± 2.35

2.05(0.51, 3.6), ES = 0.66(0.18, 1.12)

2.03(0.5, 3.6), ES = 0.68(0.2, 1.14)

Month 6

 Severity

 Interference

4.49 ± 2.85*

3.60 ± 2.63**

6.39 ± 2.30

5.98 ± 2.24

2.24(0.55, 3.9), ES = 0.74(0.26, 1.2)

2.69(0.66, 4.7), ES = 0.98(0.49, 1.45)