Functional outcome of surgical management of low mid-grade lumbar spondylolisthesis when considering the sagittal balance parameters preoperatively: a prospective study

Table 2 Changes in mean ODI during the period of this study

	Mean	Std. deviation	P value
Pre_Oswestry_Disability_Score	40.1846	15.07071	0.000*
Oswestry_Disability_Score post1	31.8462	13.05892
Oswestry_Disability_Score post3	24.5385	11.30745
Oswestry_Disability_Score post6	17.1538	9.26366
Oswestry_Disability_Score post12	13.1538	10.35642

ISSN: 2057-4967