Table 2 The calculation of survival time using Kaplan-Meier curves and log-rank test
Characteristics | 5 years OS (%) | P | Median follow-up, time (month) | 5 years CSS (%) | P |
|---|---|---|---|---|---|
Gender | 0.001 | 0.020 | |||
Male | 82.6 | 37 | 86.9 | ||
Female | 88.6 | 37 | 90.9 | ||
Year of diagnosis | 0.000 | 0.000 | |||
2004-2009 | 77.4 | 105 | 80.1 | ||
2010-2017 | 88.0 | 32 | 91.2 | ||
Location of tumor | 0.000 | 0.001 | |||
Head of pancreas | 82.9 | 38 | 86.3 | ||
Body/tail of pancreas | 88.3 | 36 | 91.0 | ||
Othera | 79.9 | 40 | 83.5 | ||
Type of tumor | 0.240 | 0.182 | |||
Functional | 81.4 | 65 | 85.7 | ||
Non-functional | 86.1 | 35 | 89.0 | ||
Histological grade | 0.000 | 0.000 | |||
G1 | 89.2 | 39 | 92.3 | ||
G2 | 84.3 | 36 | 87.3 | ||
G3 | 46.1 | 23 | 47.6 | ||
Distant metastasis | 0.000 | 0.000 | |||
No | 90.1 | 37 | 93.5 | ||
Yes | 64.1 | 40 | 65.5 | ||
Tumor size | 0.000 | 0.000 | |||
≤ 2 cm | 93.6 | 34 | 96.7 | ||
2-4 cm | 83.2 | 37 | 86.4 | ||
> 4 cm | 79.5 | 42 | 82.2 | ||
AJCC 8th stage | 0.000 | 0.000 | |||
I-II | 93.7 | 35 | 96.9 | ||
III-IV | 76.4 | 41 | 79.0 | ||
Unknown | 95.1 | 33 | 96.5 | ||
Lymph node metastasis | 0.000 | 0.000 | |||
Yes | 76.2 | 41 | 78.5 | ||
NO | 90.4 | 36 | 94.3 | ||
Not examinedb | 88.8 | 33 | 90.4 | ||
Race | 0.029 | 0.069 | |||
White | 85.0 | 38 | 88.0 | ||
Black | 87.1 | 33 | 90.1 | ||
Otherc | 88.2 | 37 | 91.1 | ||
Age at diagnosis (year) | 0.000 | 0.004 | |||
≤ 60 | 88.0 | 40 | 90.1 | ||
> 60 | 81.4 | 33 | 86.1 |