Pain severity scores for intra-articular facet and transforaminal corticosteroid injections according to the baseline score
| Variable and Baseline VAS Pain Score (0–100) | Groups | |
|---|---|---|
| IFSI | TFSI | |
| Subjects (No.) | ||
| It | 28 | 28 |
| At | 29 | 27 |
| VAS% (mean) (95% CI) | ||
| 20 | ||
| It | 53.3 (4.0–102.7) | +83.4 (+132.8 to +34.0) |
| At | 41.6 (17.1–100.3) | +70.6 (+128.5 to +12.7) |
| 40 | ||
| It | 49.5 (16.7–82.4) | +39.4 (+72.1 to +6.6) |
| At | 39.4 (0.6–78.2) | +28.9 (+66.9–9.2) |
| 60 | ||
| It | 45.8 (21.8–69.8) | 4.6 (+17.2–26.5) |
| At | 37.2 (9.4–65.0) | 12.9 (+12.0–37.8) |
| 80 | ||
| It | 42.0 (11.6–72.4) | 48.7 (23.3–74.0) |
| At | 35.0 (+0.3–70.4) | 54.6 (25.2–84.0) |
| 95 | ||
| It | 39.1 (2.7–80.9) | 81.7 (46.0–117.3) |
| At | 33.4 (15.6–82.3) | 86.0 (44.1–127.8) |
Note:—VAS% indicates the relative difference between postintervention and baseline VAS pain scores; It, intention-to-treat analysis; At, as-treated analysis.