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Table 1 Characteristic baseline table

From: Analysis of risk characteristics for metachronous metastasis in different period of nasopharyngeal carcinoma

Characteristic

N = 4434

Number of patients (%)

Sex

male

3215 (72.5)

female

1219 (27.5)

Age (year)

≤50

2666 (60.1)

>50

1768 (39.9)

T-stage

1

876 (19.8)

2

902 (20.3)

3

1506 (34)

4

1150 (25.9)

N-stage

0

410 (9.2)

1

1467 (33.1)

2

1769 (39.9)

3

788 (17.8)

Pre-NLR

<2.045

2198 (50)

≥2.045

2201 (50)

Pre-HB (g/L)

≤143

2137 (48.6)

>143

2263 (51.4)

Pre-PLR

<125

2215 (50.4)

≥125

2184 (40.6)

Pre-EBV DNA (copy/ml)

0

3166 (74)

>0

1115 (26)

Post-HB (g/L)

<122

2085 (47.2)

≥122

2330 (52.8)

Post-EBV DNA (copy/ml)

0

3561 (88.5)

>0

465 (11.5)

  1. Abbreviations: Pre-NLR neutrophil to lymphocyte ratio before treatment, Pre-HB hemoglobin before treatment, Pre-PLR platelet to lymphocyte ratio before treatment, Pre-EBV DNA Epstein-Barr virus DNA before treatment, Post-HB hemoglobin after chemoradiotherapy, Post-EBV DNA Epstein-Barr virus DNA after chemoradiotherapy