Table 2. Comparison of RMDQ between pre-treatment and follow-up of each group.

Comparative evaluation	P- value
	CS	CXS
Pre-treatment vs 6 weeks	0.170	0.090
Pre-treatment vs 3 months	0.004	0.040
Pre-treatment vs 6 months	0.001	0.001
Pre-treatment vs 1 year	0.002	< 0.001
Pre-treatment vs 2.5 years	0.144	0.004

Abbreviations: CS, conservative treatment; CSX, surgical treatment; RMDQ, Roland-Morris disability questionnaire.