Comparison · NCT03426124-4a94443f
Retrospective vs Prospective: Number of Patients Needing an IVC Filter Placement
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. Retrospective vs Prospective: Number of Patients Needing an IVC Filter Placement. Trial comparisons, record NCT03426124-4a94443f. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT03426124-4a94443f
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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 | 0.0505 | 0.0385 | 0.0659 | wilson | |
| Risk in group 2 | 0.0414 | 0.027 | 0.0631 | wilson | |
| Risk difference, group 1 minus group 2 | 0.00905 | -0.0157 | 0.0302 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 1.22 | 0.734 | 2.02 | log | |
| Odds ratio, group 1 over group 2 | 1.23 | 0.724 | 2.09 | log | |
| Number needed to treat, for one more participant with the outcome on Retrospective than on Prospective | 111 | from the risk difference interval | the interval includes no difference |
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 | Retrospective | Individuals with intermediate-high or high risk pulmonary embolism who were consecutively treated with the Ekosonic Endovascular System (EKOS) and thrombolytic drug between January 2014 and one year prior to site activation.~EkoSonic Endovascular System with thrombolytic: The device uses ultrasonic waves in combination with clot-dissolving thrombolytic drug to effectively dissolve clots. | 50 | 991 | OG000 |
| Group 2 | Prospective | Individuals who are experiencing intermediate-high or high risk pulmonary embolism where the treating investigator has selected the EKOS device and thrombolytic drug. The duration of ultrasound and volume of thrombolytic drug are selected per physician discretion.~EkoSonic Endovascular System with thrombolytic: The device uses ultrasonic waves in combination with clot-dissolving thrombolytic drug to effectively dissolve clots. | 20 | 483 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- PRIMARY
- Title
- Number of Patients Needing an IVC Filter Placement
- Description
- Measured by number patients with an occurrence of needing an IVC filter placement.
- Time frame
- From date of procedure through 12 months
- Population
Source ClinicalTrials.gov
Trial
- Title
- An International Pulmonary Embolism Registry Using EKOS
- NCT number
- NCT03426124
- Phases
- Conditions
- Pulmonary Embolism and Thrombosis
- Interventions
- EkoSonic Endovascular System with thrombolytic
- Lead sponsor
- Boston Scientific Corporation
- Results first posted
- 2023-02-22
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT03426124?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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