Table 1.
Demographics of the study population
| Variable | Non-responder (n = 255) | Responder (n = 258) | P value |
|---|---|---|---|
| Age (yr) | 58.0 (51.0-66.0) | 60.0 (51.0-67.0) | 0.163 |
| Sex (M/F) | 165 (64.7)/90 (35.3) | 168 (65.1)/90 (34.9) | 0.927 |
| BMI (kg/m2) | 20.7 (18.6-22.5) | 20.3 (18.9-22.3) | 0.926 |
| Hypertension | 67 (26.3) | 60 (23.3) | 0.428 |
| Diabetes | 73 (28.6) | 54 (20.9) | 0.043 |
| History of upper abdominal surgery | 137 (53.7) | 112 (43.4) | 0.019 |
| Origin (biliary/pancreas/liver/stomach/other) | 54 (21.2)/143 (56.1)/9 (3.5)/16 (6.3)/33 (12.9) | 63 (24.4)/141 (54.7)/18 (7.0)/7 (2.7)/29 (11.2) | 0.113 |
| Metastasis | 234 (91.8) | 233 (90.3) | 0.564 |
| Tumor invasion and metastasis in upper abdomen | 233 (91.4) | 238 (92.6) | 0.713 |
| Celiac metastasis | 69 (27.1) | 92 (35.7) | 0.036 |
| Pain location (abdominal/back/both) | 86 (33.7)/121 (47.5)/48 (18.8) | 103 (39.9)/114 (44.2)/41 (15.9) | 0.321 |
| Pain duration (mo) | 4.0 (1.0-9.0) | 4.0 (2.0-9.0) | 0.674 |
| Basal pain intensity (NRS score) | 6.0 (4.0-7.0) | 6.0 (4.0-8.0) | 0.094 |
| Daily oral morphine equivalent dose (mg) | 226.0 (75.0-381.0) | 224.0 (73.5-397.5) | 0.850 |
Values are presented as median (interquartile range) or numbers (%).
M: male, F: female, BMI: body mass index, NRS: numerical rating scale.