Comparison · NCT00462306-efe205b1
Positive Berlin Questionaires vs Negative Berlin Questionnaires: Diagnosis of Pre-eclampsia Among Subjects With Positive Berlin Questionnaires
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
2 sourcestrial-comparisons-2026-03-23-0.1.0
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ConductScience Library. Positive Berlin Questionaires vs Negative Berlin Questionnaires: Diagnosis of Pre-eclampsia Among Subjects With Positive Berlin Questionnaires. Trial comparisons, record NCT00462306-efe205b1. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT00462306-efe205b1
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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 | 0.101 | 0.0856 | 0.118 | wilson | |
| Risk in group 2 | 0.0179 | 0.0136 | 0.0236 | wilson | |
| Risk difference, group 1 minus group 2 | 0.0826 | 0.0666 | 0.1 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 5.6 | 4.07 | 7.72 | log | |
| Odds ratio, group 1 over group 2 | 6.12 | 4.38 | 8.54 | log | |
| Number needed to treat, for one more participant with the outcome on Positive Berlin Questionaires than on Negative Berlin Questionnaires | 12.1 | 9.96 | 15 | 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 | Positive Berlin Questionaires | Pregnant Women with Berlin Questionnaire Responses Indicative of Sleep Disordered Breathing | 135 | 1,343 | OG000 |
| Group 2 | Negative Berlin Questionnaires | Pregnant Women with Results of Berlin Questionnaire not Indicative of Sleep Disordered Breathing | 49 | 2,731 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- SECONDARY
- Title
- Diagnosis of Pre-eclampsia Among Subjects With Positive Berlin Questionnaires
- Description
Number of subjects with obstetrician diagnosis of pregnancy induced hypertension (pre-eclampsia) among subjects with a positive compared to a negative Berlin questionnaire. The Berlin Questionnaire consists of three categories. Categories 1 and 2 are considered positive if 2 or more responses are positive category 3 is considered positive if 1 response is positive and/or the body mass index is greater than 30 kg per meter squared. A patient is considered to have a Positive Berlin Questionnaire if 2 or more categories are positive.
- Time frame
- 1-2minutes
- Population
- Analysis per protocol
Source ClinicalTrials.gov
Trial
- Title
- Incidence of Obstructive Sleep Apnea in Pregnancy
- NCT number
- NCT00462306
- Phases
- Conditions
- Obstructive Sleep Apnea, Pregnancy
- Interventions
- Survey: Berlin questionnaire
- Lead sponsor
- Northwestern University
- Results first posted
- 2011-05-25
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT00462306?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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