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Table 1 Characteristics of included studies

From: Evaluation of Xpert GBS assay and Xpert GBS LB assay for detection of Streptococcus agalactiae

Author

Year

Country

Study design

Reference standard

Detection method

Sample type

Sample source

The timing of specimen collection

Pregnancy time

The number of sample

TP

FP

FN

TN

El Helali

2009

French

Prospective

Culturea

Xpert GBS

Vaginal

Hospital

Intrapartum

≥ 35 weeks

863

135

3

2

723

Bourgeois-Nicolaos

2013

French

Prospective

Direct cultureb

Xpert GBS

Amniotic fluid

Hospital

Intrapartum

≥ 37 weeks

139

10

2

1

126

Park

2013

South Korea

Prospective

Enrichment culturec

Xpert GBS

Vaginal-rectal

Hospital

Antepartum

35–39 weeks

175

13

7

2

153

Buchan

2014

America

Prospective

Enrichment culturec

Xpert GBS LB

Vaginal-rectal

Hospital

Antepartum

35–37 weeks

826

189

48

2

587

Buchan

2014

America

Prospective

Enrichment culturec

Xpert GBS

Vaginal-rectal

Hospital

Antepartum

35–37 weeks

505

96

15

16

378

Gouve

2016

Brazil

Prospective

Enrichment culturec

Xpert GBS

Vaginal-rectal

Hospital

Antepartum

35–37 weeks

336

55

14

9

258

Helmig

2017

Denmark

Prospective

Enrichment culturec

Xpert GBS

Vaginal-rectal

Hospital

Intrapartum

≥ 34 weeks

105

25

2

0

78

Rabaan

2017

Saudi Arabia

Prospective

Enrichment culturec

Xpert GBS

Vaginal-rectal

Clinics

Antepartum

35–37 weeks

554

139

44

0

371

Plainvert

2017

France

Prospective

Direct cultureb

Xpert GBS

Vaginal

Hospitals

Intrapartum

> 34 weeks

516

238

56

44

178

Said

2018

South Africa

Prospective

Direct cultureb

Xpert GBS

Vaginal-rectal

Hospitals

Antepartum

26 and 37 weeks

279

61

5

9

204

Shin

2019

America

Prospective

Enrichment culturec

Xpert GBS LB

Vaginal-rectal

Hospitals and clinics

Antepartum

35–37 weeks

500

107

40

1

352

Vieira

2019

Brazil

Prospective

Direct cultureb

Xpert GBS

Vaginal-rectal

Hospitals

Intrapartum

≥ 24 weeks

220

21

45

13

141

Tickler

2019

America

Prospective

Enrichment culturec

Xpert GBS LB

Vaginal or Vaginal/rectal

Hospitals

Unclear

Unclear

145

40

0

4

101

Tickler

2019

America

Prospective

Enrichment culturec

Xpert GBS LB

Vaginal or Vaginal/rectal

Hospitals

Unclear

Unclear

210

194

0

16

0

Tickler

2019

America

Prospective

Enrichment culturec

Xpert GBS

Vaginal-rectal

Hospitals

Unclear

Unclear

100

0

0

0

100

Tickler

2019

America

Prospective

Enrichment culturec

Xpert GBS LB

Vaginal-rectal

Hospitals

Unclear

Unclear

100

0

0

0

100

Tickler

2019

America

Prospective

Enrichment culturec

Xpert GBS LB

Vaginal-rectal

Hospitals

Unclear

Unclear

300

54

17

0

229

Tickler

2019

America

Retrospective

Enrichment culturec

Xpert GBS

Vaginal-rectal

Hospitals

Unclear

Unclear

150

149

0

1

0

Choera

2020

America

Prospective

Enrichment culturec&Revogene GBS LB assay

Xpert GBS LB

Vaginal-rectal

Hospitals

Intrapartum

35–37 weeks

250

50

1

1

198

  1. aIn this research, it refers to that specimens were cultured directly on blood agar plate and were subsequently placed in a broth medium
  2. bIn this research, it refers to that specimens were cultured directly on blood agar plate without enrichment
  3. cIn this research, it refers to that specimens were incubated to enrichment broth before detection