Table 6.
Patients with chronic postoperative pain and pain severity measured with the NPSI by study group and surgery type.
| Months after Discharge | QLB | CON | p-Value | ||
|---|---|---|---|---|---|
| Laparoscopic Surgery | Open Surgery | Laparoscopic Surgery | Open Surgery | ||
| Median (interquartile range) persistent pain severity | |||||
| 1 | 22 (14–28) | 35 (25–39) | 39 (10–43) | 47 (43–49) | <0.001 |
| 3 | 14 (10–20) | 18 (14–23) | 19 (12–30) | 32 (23–35) | <0.001 |
| 6 | 5 (3–9) | 8 (5–14) | 11 (6–16) | 18 (9–23) | <0.001 |
| Number (%) of patients with persistent pain | |||||
| 1 | 22 (96) | 19 (100) | 16 (89) | 24 (100) | 0.16 |
| 3 | 21 (91) | 17 (100) | 16 (89) | 24 (100) | 0.22 |
| 6 | 19 (83) | 15 (88) | 15 (88) | 23 (100) | 0.19 |
Probability was calculated with the Mann–Whitney U test for pain severity and Fisher’s exact test for persistent pain incidence. CON: control group; NPSI: Neuropathic Pain Symptom Inventory; QLB: quadratus lumborum block group.