Baseline subject demographic and clinical data
| Baseline demographics | CRFA (N=105) | SMM (N=105) |
| Age (mean±SD) | 57.8±13.6 | 55.5±13.8 |
| Female sex (n/N (%)) | 77/105 (77.3) | 78/105 (74.3) |
| BMI (kg/m2) (mean±SD) | 28.5±5.2 | 29.3±5.5 |
| Race/ethnicity (n/N (%)) | ||
| Hispanic or Latino | 6/105 (5.7) | 0/105 (0.0) |
| Non-Hispanic White | 92/105 (87.6) | 99/105 (94.3) |
| Black or African American | 4/105 (3.8) | 5/105 (4.8) |
| Asian | 3/105 (2.9) | 0/105 (0.0) |
| Other | 0/105 (0.0) | 1/105 (1.0) |
| Laterality (n/N (%)) | ||
| Unilateral | 56/105 (53.3) | 54/105 (51.4) |
| Bilateral | 49/105 (46.7) | 51/105 (48.6) |
| Duration of low back pain (months) (mean±SD) | 115.0±108.1 | 123.9±131.3 |
| Analgesic use for low back pain (n/N (%)) | ||
| Non-opioid analgesic use | 42/105 (40.0) | 43/105 (41.0) |
| Opioid use | 41/105 (39.0) | 38/105 (36.2) |
| Lateral branch block | ||
| % Decrease in NRS pain score (mean±SD) | 85.7±18.1 | 84.0±17.7 |
BMI, body mass index; CRFA, cooled radiofrequency ablation; NRS, Numeric Rating Scale; SMM, standard medical management.