Table 4. Chronic pain (patients who reported “chest pain” on EORTC QLQ-LC13 questionnaire).
| Variables | c-PVI (n=27) | iv-PCA (n=32) | P value |
|---|---|---|---|
| Before operation | 8 [30] | 9 [28] | 0.899 |
| Postoperative | |||
| 2 weeks | 19 [70] | 25 [78] | 0.496 |
| 6 weeks | 20 [74] | 21 [66] | 0.483 |
| 12 weeks | 18 [67] | 17 [53] | 0.291 |
| 24 weeks | 15 [56] | 10 [31] | 0.060 |
Values are presented as n [%]. Chronic pain was assessed in 59 patients excluding patients who declined continuation of enrollment or received adjuvant chemotherapy or repetitive pleurodesis. EORTC QLQ-LC13, European Organization for Research and Treatment of Cancer quality of life and lung cancer module questionnaire; c-PVI, continuous paravertebral infusion; iv-PCA, intravenous patient-controlled analgesia.