Table 2.
Characteristics of study participants
| Variables | With pancreatic cancer (n = 222) | Without cancer (n = 190) | Z value | P value |
| Age (yr) | 63.8 (8.7) | 61.0 (12.3) | 3.391 | 0.66 |
| Gender (male/female) | 124/98 | 98/92 | 0.3852 | 0.54 |
| Diagnosis method surgery/biopsy3 | 161/61 | - | - | - |
| Tumor location; head and neck/tail and body | 129/63 | - | - | - |
| Tumor size4 [median (quartile 1, quartile 3)], cm | 3.5 (2.7-4.3) | - | - | - |
| ≤ 2 | 29 | - | - | - |
| 2-4 | 134 | - | - | - |
| > 4 | 59 | - | - | - |
Data are expressed as the mean ± SD.
1
t value.
2
χ2 value.
3
“Biopsy” includes patients who underwent biopsy only, patients who underwent biopsy before surgery were calculated in “Surgery”, and tumor size was evaluated in greatest dimension.
4
Tumor size was mainly evaluated by the gross surgical specimen, for patient who only underwent biopsy, the tumor size was calculated by computed tomography image.