Table 3 Multivariate analysis of CSS in PC patients.

From: Value of thyroid cancer history in the prognosis of pancreatic cancer: a SEER population-based study

Characteristics

HR (95% CI)

P value

Age (Reference: < 68)

 68–79

1.259 (1.075–1.474)

0.004

  > 79

1.460 (1.192–1.789)

 < 0.001

Sex (Reference: Female)

 Male

1.017 (0.872–1.186)

0.830

Race (Reference: Black)

 White

0.756 (0.618–0.925)

0.007

 Other

0.805 (0.627–1.034)

0.090

Tumor size (Reference: < 2.6)

 2.6–3.5

1.175 (0.954–1.447)

0.130

  > 3.5

1.223 (0.992–1.508)

0.060

Grade (Reference: Well differentiated)

 Moderately differentiated

1.823 (1.336–2.488)

 < 0.001

 Poorly differentiated

2.231 (1.574–3.162)

 < 0.001

 Undifferentiated

2.284 (0.838–6.222)

0.110

 Unknown

1.980 (1.445–2.714)

 < 0.001

Radiotherapy (Reference: None/Unknown)

 Yes

1.089 (0.915–1.297)

0.340

Chemotherapy (Reference: None/Unknown)

 Yes

0.570 (0.481–0.676)

 < 0.001

Surgery (Reference: None/Unknown)

 Yes

0.441 (0.348–0.559)

 < 0.001

AJCC T status (Reference: T1)

 T2

1.607 (1.028–2.513)

0.037

 T3

1.888 (1.221–2.919)

0.004

 T4

1.665 (1.050–2.639)

0.030

 Unknown

2.607 (1.579–4.303)

 < 0.001

AJCC N status (Reference: N0)

 N1

1.235 (1.065–1.433)

0.005

 Unknown

1.383 (0.944–2.026)

0.096

AJCC M status (Reference: M0)

 M1

1.866 (1.568–2.221)

 < 0.001

Primary site (Reference: Head of pancreas)

 Body of pancreas

0.861 (0.700–1.059)

0.160

 Tail of pancreas

0.903 (0.720–1.133)

0.380

 Pancreatic duct

1.438 (0.986–2.098)

0.059

 Other specified parts of pancreas

0.958 (0.741–1.238)

0.740

 Overlapping lesion of pancreas

1.069 (0.812–1.407)

0.640

 Pancreas, NOS

0.864 (0.583–1.280)

0.470

Histological subtype (Reference: Adenocarcinoma)

 Infiltrating duct carcinoma

1.288 (1.061–1.564)

0.011

 Neuroendocrine carcinoma

0.195 (0.130–0.292)

 < 0.001

 Other

0.640 (0.476–0.860)

0.003

Prior thyroid cancer history (Reference: without)

 With

0.722 (0.542–0.961)

0.026

  1. CSS cancer-specific survival, AJCC American Joint Commission on Cancer(7th), SEER the surveillance, epidemiology, and end results, HR hazard ratio, CI confidence interval.