Scolaris Content Display Scolaris Content Display

Study flow diagram.

Figuras y tablas -
Figure 1

Study flow diagram.

'Risk of bias' summary: review authors' judgements about each risk of bias item for each included study.

Figuras y tablas -
Figure 2

'Risk of bias' summary: review authors' judgements about each risk of bias item for each included study.

'Risk of bias' graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.

Figuras y tablas -
Figure 3

'Risk of bias' graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 1: Caesarean section

Figuras y tablas -
Analysis 1.1

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 1: Caesarean section

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 2: Perinatal mortality

Figuras y tablas -
Analysis 1.2

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 2: Perinatal mortality

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 3: Puerperal pyrexia

Figuras y tablas -
Analysis 1.3

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 3: Puerperal pyrexia

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 4: Wound sepsis

Figuras y tablas -
Analysis 1.4

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 4: Wound sepsis

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 5: Blood transfusion

Figuras y tablas -
Analysis 1.5

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 5: Blood transfusion

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 6: Scar dehiscence

Figuras y tablas -
Analysis 1.6

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 6: Scar dehiscence

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 7: Perinatal asphyxia

Figuras y tablas -
Analysis 1.7

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 7: Perinatal asphyxia

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 8: Admission to special care baby units

Figuras y tablas -
Analysis 1.8

Comparison 1: X‐ray pelvimetry versus no X‐ray pelvimetry, Outcome 8: Admission to special care baby units

Summary of findings 1. X‐ray pelvimetry compared to no X‐ray pelvimetry in cephalic presentations for fetal cephalic presentations at or near term

X‐ray pelvimetry compared to no X‐ray pelvimetry in fetal cephalic presentations at or near term

Patient or population: pregnant women at or near term with fetal cephalic presentations
Setting: hospital settings in Spain, United States, and South Africa.
Intervention: X‐ray pelvimetry
Comparison: no X‐ray pelvimetry in cephalic presentations

Outcomes

Anticipated absolute effects* (95% CI)

Relative effect
(95% CI)

№ of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Risk with no pelvimetry in cephalic presentations

Risk with X‐ray pelvimetry

Caesarean section

Study population

RR 1.34
(1.19 to 1.52)

1159
(5 RCTs)

⊕⊕⊝⊝
LOW 1

One study Crichton 1962 reported caesarean section and symphysiotomy together

388 per 1000

520 per 1000
(462 to 590)

Perinatal mortality

Study population

RR 0.53
(0.19 to 1.45)

1159
(5 RCTs)

⊕⊝⊝⊝
VERY LOW 2 3

17 per 1000

9 per 1000
(3 to 25)

Wound sepsis

Study population

RR 0.83
(0.26 to 2.67)

288
(1 RCT)

⊕⊝⊝⊝
VERY LOW 4 5

42 per 1000

35 per 1000
(11 to 111)

Blood transfusion

Study population

RR 1.00
(0.39 to 2.59)

288
(1 RCT)

⊕⊝⊝⊝
VERY LOW 3 4

56 per 1000

56 per 1000
(22 to 144)

Scar dehiscence

Study population

RR 0.59
(0.14 to 2.46)

390
(2 RCTs)

⊕⊝⊝⊝
VERY LOW 5 6

26 per 1000

15 per 1000
(4 to 63)

Admission to special care baby units

Study population

RR 0.20
(0.01 to 4.13)

288
(1 RCT)

⊕⊝⊝⊝
VERY LOW 4 5

14 per 1000

3 per 1000
(0 to 57)

Apgar score < 7 at 5 minutes

Study population

(0 studies)

No data reported for this outcome

see comment

see comment

*The risk in the intervention group (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: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect

1 Most studies contributing data had design limitations. Two studies had serious design limitations (high risk of bias for sequence generation and allocation concealment) one of which contributed 37.4% of weight (‐2).

2 Most studies contributing data had design limitations. (‐1)

3 Wide confidence interval crossing the line of no effect, small sample size, few events and lack of precision. (‐2)

4 One study contributing data with serious design limitations. (‐2)

5 Very wide confidence intervals crossing the line of no effect, small sample size and few events. (‐2)

6 Study contributing 79.7% total weight has serious design limitations. (‐2)

Figuras y tablas -
Summary of findings 1. X‐ray pelvimetry compared to no X‐ray pelvimetry in cephalic presentations for fetal cephalic presentations at or near term
Comparison 1. X‐ray pelvimetry versus no X‐ray pelvimetry

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1.1 Caesarean section Show forest plot

5

1159

Risk Ratio (M‐H, Fixed, 95% CI)

1.34 [1.19, 1.52]

1.1.1 No previous caesarean section

3

769

Risk Ratio (M‐H, Fixed, 95% CI)

1.24 [1.02, 1.52]

1.1.2 Previous caesarean section

2

390

Risk Ratio (M‐H, Fixed, 95% CI)

1.45 [1.26, 1.67]

1.2 Perinatal mortality Show forest plot

5

1159

Risk Ratio (M‐H, Fixed, 95% CI)

0.53 [0.19, 1.45]

1.2.1 No previous caesarean section

3

769

Risk Ratio (M‐H, Fixed, 95% CI)

0.64 [0.21, 1.90]

1.2.2 Previous caesarean section

2

390

Risk Ratio (M‐H, Fixed, 95% CI)

0.19 [0.01, 3.91]

1.3 Puerperal pyrexia Show forest plot

1

288

Risk Ratio (M‐H, Fixed, 95% CI)

0.80 [0.22, 2.92]

1.3.1 No previous caesarean section

0

0

Risk Ratio (M‐H, Fixed, 95% CI)

Not estimable

1.3.2 Previous caesarean section

1

288

Risk Ratio (M‐H, Fixed, 95% CI)

0.80 [0.22, 2.92]

1.4 Wound sepsis Show forest plot

1

288

Risk Ratio (M‐H, Fixed, 95% CI)

0.83 [0.26, 2.67]

1.4.1 No previous caesarean section

0

0

Risk Ratio (M‐H, Fixed, 95% CI)

Not estimable

1.4.2 Previous caesarean section

1

288

Risk Ratio (M‐H, Fixed, 95% CI)

0.83 [0.26, 2.67]

1.5 Blood transfusion Show forest plot

1

288

Risk Ratio (M‐H, Fixed, 95% CI)

1.00 [0.39, 2.59]

1.5.1 No previous caesarean section

0

0

Risk Ratio (M‐H, Fixed, 95% CI)

Not estimable

1.5.2 Previous caesarean section

1

288

Risk Ratio (M‐H, Fixed, 95% CI)

1.00 [0.39, 2.59]

1.6 Scar dehiscence Show forest plot

2

390

Risk Ratio (M‐H, Fixed, 95% CI)

0.59 [0.14, 2.46]

1.7 Perinatal asphyxia Show forest plot

1

305

Risk Ratio (M‐H, Fixed, 95% CI)

0.66 [0.39, 1.10]

1.8 Admission to special care baby units Show forest plot

1

288

Risk Ratio (M‐H, Fixed, 95% CI)

0.20 [0.01, 4.13]

1.8.1 No previous caesarean section

0

0

Risk Ratio (M‐H, Fixed, 95% CI)

Not estimable

1.8.2 Previous caesarean section

1

288

Risk Ratio (M‐H, Fixed, 95% CI)

0.20 [0.01, 4.13]

Figuras y tablas -
Comparison 1. X‐ray pelvimetry versus no X‐ray pelvimetry