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Methodological quality summary: review authors' judgements about each methodological quality item for each included study.
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Figure 1

Methodological quality summary: review authors' judgements about each methodological quality item for each included study.

Methodological quality graph: review authors' judgements about each methodological quality item presented as percentages across all included studies.
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Figure 2

Methodological quality graph: review authors' judgements about each methodological quality item presented as percentages across all included studies.

Comparison 1 Antibiotic versus placebo, Outcome 1 Neonatal sepsis.
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Analysis 1.1

Comparison 1 Antibiotic versus placebo, Outcome 1 Neonatal sepsis.

Comparison 1 Antibiotic versus placebo, Outcome 2 Chorioamnionitis.
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Analysis 1.2

Comparison 1 Antibiotic versus placebo, Outcome 2 Chorioamnionitis.

Comparison 1 Antibiotic versus placebo, Outcome 3 Postpartum endometritis.
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Analysis 1.3

Comparison 1 Antibiotic versus placebo, Outcome 3 Postpartum endometritis.

Comparison 1 Antibiotic versus placebo, Outcome 4 Neonatal intensive care admissions.
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Analysis 1.4

Comparison 1 Antibiotic versus placebo, Outcome 4 Neonatal intensive care admissions.

Summary of findings for the main comparison. Antibiotic versus placebo for meconium‐stained amniotic fluid in labour for preventing maternal and neonatal infections

Antibiotic versus placebo for meconium‐stained amniotic fluid in labour for preventing maternal and neonatal infections

Population: Women with meconium‐stained amniotic fluid in labour, gestational age more than 24 weeks
Settings: A hospital, North Carolina, United States
Intervention: Antibiotic versus placebo for preventing maternal and neonatal infections

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

No of Participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

Control

Antibiotic versus placebo

Neonatal sepsis

Study population

RR 1
(0.21 to 4.76)

120
(1 study)

⊕⊕⊝⊝
low1

50 per 1000

50 per 1000
(10 to 238)

Moderate

50 per 1000

50 per 1000
(10 to 238)

Chorioamnionitis

Study population

RR 0.36
(0.21 to 0.62)

362
(2 studies)

⊕⊕⊕⊝
moderate2

240 per 1000

86 per 1000
(50 to 149)

Moderate

239 per 1000

86 per 1000
(50 to 148)

Postpartum endometritis

Study population

RR 0.5
(0.18 to 1.38)

120
(1 study)

⊕⊕⊝⊝
low1

167 per 1000

83 per 1000
(30 to 230)

Moderate

167 per 1000

84 per 1000
(30 to 230)

Mortality and morbidity prior to discharge (Neonatal intensive care admissions)

Study population

RR 0.83
(0.39 to 1.78)

120
(1 study)

⊕⊕⊝⊝
low1

200 per 1000

166 per 1000
(78 to 356)

Moderate

200 per 1000

166 per 1000
(78 to 356)

Side effects of treatment

Not estimable

0 (0 study)

See comment

This outcome was not reported in any of the included studies.

Duration of admission to neonatal intensive care unit

Not estimable

0 (0 study)

See comment

This outcome was not reported in any of the included studies.

*The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
CI: Confidence interval; RR: Risk ratio;

GRADE Working Group grades of evidence
High quality: Further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: We are very uncertain about the estimate.

1 Wide confidence interval crossing the line of no effect, small sample size and few events (‐2).
2 Most weight contributed by a study with design limitations (‐1).

Figuras y tablas -
Summary of findings for the main comparison. Antibiotic versus placebo for meconium‐stained amniotic fluid in labour for preventing maternal and neonatal infections
Comparison 1. Antibiotic versus placebo

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Neonatal sepsis Show forest plot

1

120

Risk Ratio (M‐H, Fixed, 95% CI)

1.0 [0.21, 4.76]

2 Chorioamnionitis Show forest plot

2

362

Risk Ratio (M‐H, Fixed, 95% CI)

0.36 [0.21, 0.62]

3 Postpartum endometritis Show forest plot

1

120

Risk Ratio (M‐H, Fixed, 95% CI)

0.5 [0.18, 1.38]

4 Neonatal intensive care admissions Show forest plot

1

120

Risk Ratio (M‐H, Fixed, 95% CI)

0.83 [0.39, 1.78]

Figuras y tablas -
Comparison 1. Antibiotic versus placebo