Table 1.
Clinical characteristics of patients in prognostic model
| Total | Model 1 | High risk | P_value | Model 2 | High risk | P_value | |
|---|---|---|---|---|---|---|---|
| Low risk | Low risk | ||||||
| PDAC patients (n) | 66 | 33 | 33 | – | 33 | 33 | – |
| Sex (F [%]) | 35 (53.03) | 21 (63.64) | 14 (21.21) | 0.084 | 21 (63.64) | 14 (21.21) | 0.084 |
| Age (years) | 63.27 ± 10.21 | 63.73 ± 9.35 | 62.82 ± 11.14 | 0.721 | 65.30 ± 9.88 | 61.24 ± 10.28 | 0.107 |
| Grade (n [%]) | |||||||
| 1 | 9 (13.64) | 6 (18.18) | 3 (9.09) | 0.609 | 6 (18.18) | 3 (9.09) | 0.233 |
| 2 | 21 (31.82) | 9 (27.27) | 12 (36.36) | 11 (33.33) | 10 (30.30) | ||
| 3 | 36 (54.55) | 18 (54.55) | 18 (54.55) | 16 (48.48) | 20 (60.61) | ||
| TNM stage (n [%]) | |||||||
| I | 28 (42.42) | 17 (51.52) | 11 (33.33) | 0.177 | 17 (51.52) | 11 (33.33) | 0.359 |
| II | 16 (24.24) | 9 (27.27) | 7 (21.21) | 8 (24.24) | 8 (24.24) | ||
| III | 10 (15.15) | 4 (12.12) | 6 (18.18) | 3 (9.09) | 7 (21.21) | ||
| IV | 12 (18.18) | 3 (9.09) | 9 (27.27) | 5 (15.15) | 7 (21.21) | ||
| Tumor site (n [%]) | |||||||
| Head | 44 (66.67) | 20 (60.61) | 24 (72.73) | 0.296 | 18 (54.55) | 26 (78.79) | 0.068 |
| Body/Tail | 22 (33.33) | 13 (39.39) | 9 (27.27) | 15 (45.45) | 7 (21.21) | ||
| CA 19–9 (U/ml) | 197.15 (68.59–884.13) | 173.20 (44.80–821.15) | 199.30 (69.08–1000.00) | 0.657 | 212.20 (48.71–821.15) | 195.00 (68.58–944.80) | 0.944 |
| Vascular invasion (n [%]) | 10 (15.15) | 6 (18.18) | 4 (12.12) | 0.492 | 5 (15.15) | 5 (15.15) | 1 |
| Intravascular cancer embolus (n [%]) | 21 (31.82) | 9 (27.27) | 12 (36.36) | 0.428 | 8 (24.24) | 13 (39.39) | 0.186 |
| Perineural invasion (n [%]) | 19 (28.79) | 9 (27.27) | 10 (30.30) | 0.786 | 9 (27.27) | 10 (30.30) | 0.786 |
| Peripancreatic infiltarion (n [%]) | 48 (72.73) | 21 (63.64) | 27 (81.82) | 0.097 | 22 (66.67) | 26 (78.79) | 0.269 |
| Distant metastasis (n [%]) | 11 (16.67) | 3 (9.09) | 8 (24.24) | 0.099 | 4 (12.12) | 7 (21.21) | 0.322 |
| Lymph node metastasis (n [%]) | 26 (39.39) | 12 (36.36) | 14 (42.42) | 0.614 | 11 (33.33) | 15 (45.45) | 0.314 |
| Maximum diameter (cm) | 3.5 (3.0–4.5) | 3.5 (3.0–4.25) | 3.5 (2.25–4.5) | 0.746 | 3.5 (3.0–4.5) | 3.5 (2.25–4.25) | 0.902 |