Block procedure data
| Factor | Serratus block (n=49) | Paravertebral block (n=51) | P value |
| Time to perform procedure per side (min) | 1.25 (0–4.0) | 4.0 (2.0–6.0) | <0.001 |
| Average pain during block placement (NRS) | 1.0 (0–2.0) | 1.0 (0–2.0) | 0.94 |
| Worst pain during block (NRS) | 2.0 (0–4.0) | 2.0 (1.0–3.5) | 0.85 |
Data are presented as median (IQR).
Test used: Wilcoxon-Mann-Whitney test.
NRS, Numeric Rating Scale.