Incidence of significant (>3 or ≥4) or severe pain (≥7) from Visual Analogue Scale scores
| PVB n (%) | TEB n (%) | RR (95% CI)* | |
| Average chest pain overall >3 | |||
| 3 months | 5/25 (20.0) | 6/21 (28.6) | 0.7 (0.2 to 2.0) |
| 6 months | 2/27 (7.4) | 5/25 (20.0) | 0.4 (0.1 to 1.7) |
| Average chest pain overall ≥4 | |||
| 3 months | 5/25 (20.0) | 4/21 (19.0) | 1.1 (0.3 to 3.4) |
| 6 months | 1/27 (3.7) | 3/25 (12.0) | 0.3 (0.03 to 2.8) |
| Average chest pain overall ≥7 | |||
| 3 months | 0/25 (−) | 2/21 (10.0) | –† |
| 6 months | 0/27 (−) | 1/25 (4.0) | –† |
| Worst chest pain overall >3 | |||
| 3 months | 9/24 (37.5) | 7/23 (30.4) | 1.2 (0.6 to 2.8) |
| 6 months | 7/27 (25.9) | 11/26 (42.3) | 0.6 (0.3 to 1.3) |
| Worst chest pain overall ≥4 | |||
| 3 months | 8/24 (33.3) | 7/23 (30.4) | 1.1 (0.5 to 2.5) |
| 6 months | 7/27 (25.9) | 9/26 (34.6) | 0.75 (0.3 to 1.7) |
| Worst chest pain overall ≥7 | |||
| 3 months | 6/24 (25.0) | 5/23 (21.7) | 1.2 (0.4 to 3.3) |
| 6 months | 2/27 (7.4) | 5/26 (19.2) | 0.4 (0.1 to 1.8) |
↵*RR <1 indicates less incidence with PVB.
†Unable to estimate.
PVB, paravertebral blockade; RR, relative risk; TEB, thoracic epidural blockade.