Comparison · NCT00443560-8e7bf3f5
Instrumental Vaginal Delivery (IVD) vs Spontaneous Vaginal Delivery (SVD): Number of Parturients With a Decrease in the Infusion of Epidural Analgesia During Second Stage of Labor
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
2 sourcestrial-comparisons-2026-03-23-0.1.0
Cite this record
ConductScience Library. Instrumental Vaginal Delivery (IVD) vs Spontaneous Vaginal Delivery (SVD): Number of Parturients With a Decrease in the Infusion of Epidural Analgesia During Second Stage of Labor. Trial comparisons, record NCT00443560-8e7bf3f5. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT00443560-8e7bf3f5
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Measures6
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
| Measure | Value | 95% interval, lower | 95% interval, upper | Method | Note |
|---|---|---|---|---|---|
| Risk in group 1 | 0.143 | 0.123 | 0.166 | wilson | |
| Risk in group 2 | 0.0485 | 0.0371 | 0.0632 | wilson | |
| Risk difference, group 1 minus group 2 | 0.0945 | 0.0695 | 0.12 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 2.95 | 2.17 | 4.01 | log | |
| Odds ratio, group 1 over group 2 | 3.27 | 2.35 | 4.56 | log | |
| Number needed to treat, for one more participant with the outcome on Instrumental Vaginal Delivery (IVD) than on Spontaneous Vaginal Delivery (SVD) | 10.6 | 8.33 | 14.4 | from the risk difference interval |
Source ClinicalTrials.gov
Groups2
Neither group, or both, names a comparator, so the groups keep ClinicalTrials.gov's order.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code |
|---|---|---|---|---|---|
| Group 1 | Instrumental Vaginal Delivery (IVD) | Instrumental vaginal delivery (IVD) is attempted to prevent fetal hypoxia if the second stage of labor is prolonged. It includes forceps and vacuum extractions. | 146 | 1,021 | OG000 |
| Group 2 | Spontaneous Vaginal Delivery (SVD) | The control group consisted of parturients who had a spontaneous vaginal delivery (SVD)in the same 24 hour period who were case-matched for gravidity and parity. | 51 | 1,051 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- PRIMARY
- Title
- Number of Parturients With a Decrease in the Infusion of Epidural Analgesia During Second Stage of Labor
- Description
At the request of the obstetric provider, second stage analgesia density was decreased by decreasing the basal infusion rate if there was dissatisfaction with the progress of labor or a perceived inability to push. The basal infusion was never totally discontinued.
- Time frame
- Second stage of labor up to 3 hours
- Population
- Analysis was per protocal
Source ClinicalTrials.gov
Trial
- Title
- The Association Between Decreasing Labor Analgesia Epidural Infusion and Forceps Delivery
- NCT number
- NCT00443560
- Phases
- Conditions
- Labor Pain, Pregnancy
- Interventions
- Case controlled analysis of epidural labor analgesia patterns
- Lead sponsor
- Northwestern University
- Results first posted
- 2011-07-21
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT00443560?tab=results
Source ClinicalTrials.gov
Source
- Release
- trial-comparisons-2026-03-23-0.1.0
- Release manifest SHA-256
- f66225897fbf258b57ea10bdacfd0347d3cdfda93f7f5685234b7e06ea36fa57
- AACT copy
- 2026-03-23
- Tables read
- outcome_counts.parquet, outcome_measurements.parquet, outcomes.parquet, reported_event_totals.parquet, reported_events.parquet, result_groups.parquet, studies.parquet, ctgov_trial.parquet
Source ClinicalTrials.gov
Sources 2
- ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
- ClinicalTrials.govNo license stated
Each source's terms
- ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
- ClinicalTrials.govnone stated
ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions. The measures are ConductScience's calculation from them.
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