NAVITAS: A Study to Characterize the Relationship Between Select Objective Metrics and Clinical Outcomes in Chronic Pain Patients Treated With Boston Scientific Neurostimulation Systems

Key Inclusion Criteria:

- Is enrolled in the Boston Scientific RELIEF study

- Is willing and able to comply with completing protocol required assessments and
evaluations

- Has an average overall pain intensity of 5 or greater on a 0-10 numerical rating scale
at RELIEF primary protocol Baseline Visit

Key Exclusion Criteria:

- Has any pain-related diagnosis, medical/psychological condition or external factors
that, in the investigator's medical judgment, might confound reporting of study
outcomes (e.g. history of pelvic pain, anginal pain, chronic migraine, involved in
litigation, workmen's compensation)