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Table 2 Distribution of plasma EBV DNA loads according to conventional prognostic factors.

From: Circulating cell‐free epstein–barr virus DNA levels and clinical features in Moroccan patients with nasopharyngeal carcinoma

Characteristics

EBV DNA load

p-value

Mean (IU/ml)

σ

Age

 ≤ 30

24,694

± 63,760

0.01

 > 30

119,801

± 369,113

Gender

 Female

62,539

± 186,538

0.1

 Male

80,909

± 231,513

 

Gender and Age

 Female, ≤ 30

42,658

± 93,241

 

 Female, > 30

70,876

± 214,835

0.4

 Male, ≤ 30

10,957

± 19,628

 

 Male, > 30

101,064

± 259,527

 

Cigarette smoking

 No

109,881

± 368,262

0.2

 Yes

66,385

± 195,496

Alcohol consumption

 No

95,116

± 324,783

0.2

 Yes

106,263

± 328,960

Family history of cancer

 No

63,627

± 160,216

0.04

 Yes

209,697

± 612,347

Tumor classification

 T1-T2

30,072

± 58,802

0.012

 T3-T4

124,706

± 381,729

 

Lymph node status

 N0-N1

32,175

± 85,392

0.003

 N2-N3

141,974

± 412,092

 

Metastasis status

 M0

30,455

± 67,107

0.00

 M1

240,946

± 546,896

 

Stage of the disease

 I

2197

± 3442

0.01

 II

29,266

± 58,612

 

 III

29,515

± 77,795

 

 IV

141,779

± 476,377