Table 1 Main characteristics of studies included in the meta-analysis.

From: Diagnostic accuracy of interferon-gamma-induced protein 10 for differentiating active tuberculosis from latent tuberculosis: A meta-analysis

Author

Year

Country

World bank income classification

TB incidence rate per population

Participants (N)

index test (IP-10) condition

Reference standard

ATB

LTBI

Nonghanphithak D

2017

Thailand

UMIC

172 per 100,000

48

38

Unstimulated

culture, clinical, radiological, TST and QFT-GIT test

Nonghanphithak D

2017

Thailand

UMIC

172 per 100,000

48

38

TB Ag

culture, clinical, radiological, TST and QFT-GIT test

Yao XY

2017

China

UMIC

64 per 100,000

20

10

Unstimulated

culture, clinical, radiological, T-SPOT.TB and QFT-GIT test

Yao XY

2017

China

UMIC

64 per 100,000

20

15

Unstimulated

culture, clinical, radiological, T-SPOT.TB and QFT-GIT test

Wu J

2016

China

UMIC

64 per 100,000

25

36

Unstimulated

culture, clinical, radiological, TST and T-SPOT.TB test

Wu J

2016

China

UMIC

64 per 100,000

25

36

TB Ag

culture, clinical, radiological, TST and T-SPOT.TB test

Li XF

2016

China

UMIC

64 per 100,000

72

57

TB Ag

culture, clinical, radiological and T-SPOT.TB test

Jeong YH

2015

Republic of Korea

HIC

77 per 100,000

33

20

TB Ag

culture, clinical, radiological, TST and QFT-GIT test

Wergeland I

2015

Norway

HIC

6.1 per 100,000

6

23

Unstimulated

culture, clinical, radiological, TST and QFT-GIT test

Wergeland I

2015

Norway

HIC

6.1 per 100,000

59

11

Unstimulated

culture, clinical, radiological, TST and QFT-GIT test

Tebruegge M

2015

Australia

HIC

6.1 per 100,000

6

16

TB Ag

culture, clinical, radiological, TST and QFT-GIT test

Won EJ

2015

Republic of Korea

HIC

77 per 100,000

36

15

TB Ag

culture, clinical, radiological, TST and QFT-GIT test

Yang QT

2014

China

UMIC

64 per 100,000

20

17

TB Ag

culture, clinical, radiological and IFN-γ ELISPOT test

Chegou NN

2013

South Africa

UMIC

781 per 100,000

15

26

Unstimulated

culture, clinical, radiological, TST and QFT-GIT test

Wang S

2012

China

UMIC

64 per 100,000

28

34

Unstimulated

culture, clinical, radiological, TST and QFT-GIT test

  1. UMIC: upper-middle-income countries, HIC: high-income countries, TB Ag: tuberculosis antigen, TST: tuberculin skin test, QFT-GIT: QuantiFERON-TB Gold In-tube, ELISPOT: enzyme linked immunospot.