Table 2.
Patient and tumor characteristics between gallbladder cancer comparing patients from three centers, presented as N (percentage) or mean±SD
| Variable | Temuco, Chile (n=460) | Atlanta, GA (n=24) | Rochester, MN (n=87) | p valueb |
|---|---|---|---|---|
| Preoperative suspicion | 50 (11 %) | 12 (50 %) | 66 (76 %) | <0.001 |
| Female gender | 380 (83 %) | 17 (71 %) | 65 (75 %) | 0.0922 |
| Age | 62±13 | 64±11 | 65±12 | 0.1752 |
| Cholelithiasis | 448 (98 %) | 18 (78 %) | 52 (74 %) | <0.0001 |
| AJCCa T0 | 68 (16 %) | 0 | 0 | <0.0001 |
| AJCC T1 | 0 | 6 (25 %) | 3 (4 %) | <0.0001 |
| AJCC T2–T4 | 335 (78 %) | 18 (75 %) | 75 (96 %) | <0.0001 |
| AJCC T5 | 28 (7 %) | 0 | 0 | 0.0130 |
| Well differentiated | 129 (29 %) | 3 (14 %) | 1 (1 %) | <0.0001 |
| Nodal metastasis | 57 (15 %) | 10 (45 %) | 30 (50 %) | <0.0001 |
| Vascular invasion | 51 (11 %) | 13 (57 %) | 8 (16 %) | <0.0001 |
| Perineural invasion | 32 (7 %) | 15 (79 %) | 4 (9 %) | <0.0001 |
| Lymphatic invasion | 43 (10 %) | 13 (57 %) | 26 (46 %) | <0.0001 |
Percentages reflect the percentage of patients in each cohort with complete data available for the given variable
a
American Joint Committee on Cancer Staging system
b
P values obtained from Chi-square test of independence for categorical variables and ANOVA for continuous variables