Vorapaxar vs Placebo: serious adverse events
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
Measures 6
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
| Measure | Value | 95% interval, lower | 95% interval, upper | Method | Note | Source |
|---|---|---|---|---|---|---|
| Risk in group 1 | 0.266 | 0.259 | 0.274 | wilson | ClinicalTrials.gov | |
| Risk in group 2 | 0.26 | 0.252 | 0.267 | wilson | ClinicalTrials.gov | |
| Risk difference, group 1 minus group 2 | 0.00681 | -0.00382 | 0.0174 | newcombe hybrid score | ClinicalTrials.gov | |
| Risk ratio, group 1 over group 2 | 1.03 | 0.986 | 1.07 | log | ClinicalTrials.gov | |
| Odds ratio, group 1 over group 2 | 1.04 | 0.98 | 1.09 | log | ClinicalTrials.gov | |
| Number needed to harm, for one more participant with a serious adverse event on Vorapaxar than on Placebo | 147 | from the risk difference interval | the interval includes no difference | ClinicalTrials.gov |
Groups 2
Group 2 names the comparator: placebo.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code | Source |
|---|---|---|---|---|---|---|
| Group 1 | Vorapaxar | one 2.5 mg tablet daily, orally, for at least 1 year in addition to current treatment of atherosclerotic disease, which will be continued to be administered as per current standard of care. | 3,514 | 13,186 | EG001 | ClinicalTrials.gov |
| Group 2 | Placebo | 1 placebo tablet, orally, daily for at least 1 year in addition to current treatment of atherosclerotic disease, which will be continued to be administered as per current standard of care. | 3,419 | 13,166 | EG000 | ClinicalTrials.gov |
Harm 2
| Field | Value | Source |
|---|---|---|
| What it counts | Total, serious adverse events | ClinicalTrials.gov |
| Time frame | up to 3 years | ClinicalTrials.gov |
Trial 8
| Field | Value | Source |
|---|---|---|
| Title | Trial to Assess the Effects of Vorapaxar (SCH 530348; MK-5348) in Preventing Heart Attack and Stroke in Patients With Atherosclerosis (TRA 2°P - TIMI 50) (P04737) | ClinicalTrials.gov |
| NCT number | NCT00526474 | ClinicalTrials.gov |
| Phases | PHASE3 | ClinicalTrials.gov |
| Conditions | Atherosclerosis, Ischemia, Myocardial Infarction, Cerebrovascular Accident, Peripheral Arterial Disease | ClinicalTrials.gov |
| Interventions | Vorapaxar, Placebo | ClinicalTrials.gov |
| Lead sponsor | Merck Sharp & Dohme LLC | ClinicalTrials.gov |
| Results first posted | 2014-06-18 | ClinicalTrials.gov |
| Results on ClinicalTrials.gov | https://clinicaltrials.gov/study/NCT00526474?tab=results | ClinicalTrials.gov |
Source 4
| Field | Value | Source |
|---|---|---|
| Release | trial-comparisons-2026-03-23-0.1.0 | ClinicalTrials.gov |
| Release manifest SHA-256 | f66225897fbf258b57ea10bdacfd0347d3cdfda93f7f5685234b7e06ea36fa57 | ClinicalTrials.gov |
| AACT copy | 2026-03-23 | ClinicalTrials.gov |
| 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 | ClinicalTrials.gov |
Release trial-comparisons-2026-03-23-0.1.0
ClinicalTrials.gov's posted results, through CTTI's AACT: ClinicalTrials.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.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.
ClinicalTrials.gov: none 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.