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Table 1 The clinicopathological characteristics of patients in the training, validation and combined cohorts

From: Preoperative systemic immune-inflammation index predicts prognosis of patients with oral squamous cell carcinoma after curative resection

Clinical and pathological indexes

Training cohort

Validation cohort

P

Combined cohort

N = 138 (%)

N = 171 (%)

N = 309 (%)

Age (y)

 ≤ 60

47 (34.06)

65 (38.01)

0.472

112 (36.25)

 > 60

91 (65.94)

106 (61.99)

 

197 (63.75)

Gender

 Male

81 (58.70)

90 (52.63)

0.286

171 (55.34)

 Female

57 (41.30)

81 (47.37)

 

138 (44.66)

Smoking

 No

89 (64.49)

133 (77.78)

0.010

222 (71.84)

 Yes

49 (35.51)

38 (22.22)

 

87 (28.16)

Alcohol use

 No

104 (75.36)

141 (82.46)

0.126

245 (79.29)

 Yes

34 (24.64)

30 (17.54)

 

64 (20.71)

Tumor size

 T1–T2

103 (74.64)

135 (78.95)

0.371

238 (77.02)

 T3–T4

35 (25.36)

36 (21.05)

 

71 (22.98)

Pathological grade

 I

83 (60.14)

95 (55.56)

0.417

178 (57.61)

 II–III

55 (39.86)

76 (44.44)

 

131 (42.39)

Cervical nodal metastasis

 N0

112 (81.16)

121 (70.76)

0.035

233 (75.40)

 N+

26 (18.84)

50 (29.24)

 

76 (24.60)

Clinical stage

 I–II

91 (65.94)

100 (58.48)

0.180

191 (61.81)

 III–IV

47 (34.06)

71 (41.52)

 

118 (38.19)

SII

 < 484.5

96 (69.57)

105 (61.40)

0.135

201 (65.05)

 ≥ 484.5

42 (30.43)

66 (38.60)

 

108 (34.95)

NLR

 < 2.9

109 (78.99)

129 (75.44)

0.461

238 (77.02)

 ≥ 2.9

29 (21.01)

42 (24.56)

 

71 (22.98)

PLR

 < 170.2

114 (82.61)

129 (75.44)

0.126

243 (78.64)

 ≥ 170.2

24 (17.39)

42 (24.56)

 

66 (21.36)

Median survival (months)

48 (4–134)

45 (4–138)

 

46 (4–138)

  1. The italic values in the table denotes P-values less than 0.05 with statistical significance