Table 2 Summary statistics, inter and intragroup comparisons of NRS and the Thongprasom scale

Baseline

Mean ± SD

7.70 ± 1.93^A

7.13 ± 2.18^A

517.50

0.313

21.40 ± 14.53^A

21.08 ± 19.09^A

473.00

0.738

Median (IQR)

8.00 (4.00)^A

7.50 (4.00)^A

14.25 (29.50)^A

11.50 (13.50)^A

2 weeks

Mean ± SD

2.33 ± 1.97^B

4.97 ± 2.09^B

727.50

< 0.001*

9.00 ± 10.21^B

14.20 ± 13.80^B

657.00

0.002*

Median (IQR)

2.00 (4.00)^B

5.00 (4.00)^B

3.50 (13.00)^B

7.50 (7.00)^B

4 weeks

Mean ± SD

1.20 ± 1.56^C

2.83 ± 1.97^C

660.00

0.001*

6.35 ± 8.43^C

10.02 ± 11.79^C

612.00

0.012*

Median (IQR)

0.00 (3.00)^C

2.50 (1.75)^C

3.00 (4.00)^C

3.00 (15.00)^C

Test statistic

56.59

56.00

55.71

52.30

p-value

< 0.001*

< 0.001*

< 0.001*

< 0.001*