Table 4 Prognostic index score based on patients in the primary cohort.

From: Prognostic model and optimal treatment for patients with stage IVc nasopharyngeal carcinoma at diagnosis

Characteristic

Score

n (HR = en)

Multiple-organ metastases

1

0.42

Liver metastases

1

0.48

Serum LDH > 245 IU/L

1

0.52

Number of lesions

1

Baseline

—

2 to 5

2

0.83

≥6

3

1.20

KPS ≤ 70

3

1.24

Chemotherapy response

CR + PR

Baseline

—

SD

2

0.81

PD

3

1.30

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