Percentage of patients aged 18 years and older undergoing spine therapy(-ies) who completed baseline and 2 +/- 1 month follow-up (patient-reported) quality-of-life assessment with an improvement in the quality of life status from the baseline. This measure will be calculated using two performance rates. Two rates can be reported for baseline and follow-up: Rate 1: Patient population with Follow-up/Patient population with baseline Rate 2: Patient population with improvement in Quality of life status from the baseline