Table 5 Univariate and multivariate analysis of the prognostic factors for recurrence-free survival of patients after PS matching

Age/year

  ≤ 60

1

1

  > 60

1.910(1.095–3.333)

2.175(1.226–3.859)

Gender

 Male

1

 Female

0.533(0.331–1.120)

GI bleeding

 Yes

1

 No

1.307(0.756–2.261)

Primary site

 Gastric

1

1

 Non-gastric

2.116(1.228–3.645)

1.066(0.560–2.029)

Tumor size

  ≤ 5.0 cm

1

1

  > 5.0 cm

1.962(1.254–2.848)

1.758(1.067–3.759)

Predominant cell type

 Spindle

1

 Epithelioid

0.765(0.263–3.376)

 Mixed

0.735(0.363–3.289)

Mitotic index

  ≤ 5 per 50 HPFs

1

1

 6–10 per 50 HPFs

1.524(1.186–2.654)

1.387(1.084–2.368)

  > 10 per 50 HPFs

2.098(1.522–2.890)

1.811(1.247–2.629)

Tumor rupture

 No

1

 Yes

1.801(0.711–4.563)

NIH risk classification

 Intermediate risk

1

1

 High risk

4.943(2.479–9.854)

2.640(1.140–6.115)

Ki-67 index

  ≤ 5

1

 6–10

1.128(0.581–3.835)

  > 10

1.045(0.854–4.185)

NLR

  < 5.1

1

1

  ≥ 5.1

1.552(1.180–2.041)

1.878 (1.060–3.327)

PLR

  < 98.6

1

1

  ≥ 98.6

1.453(1.126–1.875)

1.262(0.727–2.191)

OPNI

  < 42.6

1

1

  ≥ 42.6

0.409(0.170–0.980)

0.592 (0.400–0.875)