Randomization and Masking
TG, NTG, pain
SYNDROME
Participants were allocated (1:1) to 1 of 2 groups: trial group (TG) with a screening trial followed by SCS implantation in light of the screening trial result, or no trial group (NTG) with a strategy of SCS implantation only. Patients were randomized to groups through a password-protected web-based system developed and maintained by the Exeter Clinical Trials Unit. The allocation was stratified by center, and minimized on patient age (≥65 or <65 years), sex, and presence of persistent spinal pain syndrome type 2 (PSPS‐T2). The methods for randomization and masking have been previously described.