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Table 5 Factors affecting overall survival among studied cases

From: Programmed death ligand 1 expression in diffuse large B cell lymphoma: correlation with clinicopathological prognostic factors

Variables

1 year

5 years

Test of significance

P value

Gender

 Male

83.1%

71.4%

0.858

0.345

 Female

73.8%

58.9%

Age

  ≤ 60

86.2%

71.4%

2.248

0. 134

  > 60

70.1%

59.4%

HCV seropositivity

 Negative

79.8%

70.1%

0.602

0.438

 Positive

75.5%

56.2%

B symptoms

 Absent

78.1%

70%

0.752

0.386

 Present

78.8%

59.1%

BM infiltration (N = 93)

 No

84.3%

71.6%

5.381

0.02*

 Yes

70%

50.5%

Hans classification

 GC

80.6%

67.4%

0.011

0.918

 Non-GC

77.6%

64.8%

IPI risk

 Low and low intermediate

93.5%

80.3%

10.65

0.001*

 High intermediate and high

64.5%

51.2%

P53 expression (N = 85)

 No over expression

78.6%

61.4%

0.139

0.71

 Over expression

83.1%

75.5%

Double expresser

 No

80.4%

69.8%

2.005

0.157

 Yes

73.9%

52.3%

Triple expresser

 No

78.7%

65.9%

0.471

0.493

 Yes

75%

PD-L1 expression

 Low

88.9%

88.9%

6.729

0.009*

 High

74.3%

52.6%

  1. Kaplan–Meier curve method and the log-rank test