Efficacy of the PainVision apparatus for assessment of axial neck pain after cervical laminoplasty: a prospective study

Table 4 Comparison of the amounts of change between pre- and post-operative scores in each pain assessment method using the Bonferroni method

PDPD	6 months	12 months	18 months	24 months
3 months	1.000	0.530	0.022	0.025
6 months		1.000	0.323	0.358
12 months			1.000	1.000
18 months				1.000

VAS	6 months	12 months	18 months	24 months
3 months	1.000	1.000	0.055	0.004
6 months		1.000	0.248	0.028
12 months			1.000	0.262
18 months				1.000

For BP, multiple comparisons were not performed because the Friedman test was not significant
PD, pain degree; VAS, visual analog scale; BP, bodily pain

ISSN: 1749-799X