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Table 1 Characteristics of studies included in the meta-analysis

From: The low IGFBP-3 level is associated with esophageal cancer patients: a meta-analysis

Study

Population

Case/control (n)

Treatment before studya

Test approaches of IGFBP-3 level

Cut-off value

Positivity rate

bResults 1

Adjuvant therapy

Prognosis

cResults 2

Makoto Sohda (2004) [16]

Japan

66/18

No

ELISA

High

Surgery

Sur. Survival

No

O. Yilmaz (2006) [21]

Turkey

40/40

No

ELISA

Low

E. Di Martino (2006) [20]

UK

39/38

No

IHC/RT-PCR

0

76.92%

High

Surgery

Lei Zhao (2012) [15]

China

110/56

IHC

4

51.82%

Low

Sur. Survival

High

M. Natsuizaka (2014) [22]

Japan

91/91

IHC

0

35.16%

Low

Surgery

Sur. Survival

low

Li-Ling Luo (2015) [32]

China

70/10

Radiotherapy

IHC

0.65

45.71%

High

Radiotherapy

Sur. Survival

High

Peng Ye (2016) [23]

China

264/132

IHC

Low

  1. – not related in the article
  2. a No had not undergone surgical intervention, chemotherapy, or radiotherapy
  3. b Results 1 the relationship between the expression level of IGFPB-3 and esophageal cancer. High high expression level of IGFPB-3 was found to be associated with a risk of EC. Low low expression level of IGFPB-3 was found to be associated with a risk of EC
  4. c Results 2: the relationship between IGFBP-3 and prognosis. High a high expression level of IGFPB-3 was found to be associated with improved survival rate of EC. Low a low expression level of IGFPB-3 was found to be associated with improved survival rate of EC. No no significant association was observed between the IGFBP-3 level and prognosis