Rivaroxaban vs Warfarin: 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 | 0.373 | 0.361 | 0.384 | wilson | ClinicalTrials.gov | |
| Risk in group 2 | 0.382 | 0.371 | 0.393 | wilson | ClinicalTrials.gov | |
| Risk difference, group 1 minus group 2 | -0.00923 | -0.0251 | 0.00669 | newcombe hybrid score | ClinicalTrials.gov | |
| Risk ratio, group 1 over group 2 | 0.976 | 0.935 | 1.02 | log | ClinicalTrials.gov | |
| Odds ratio, group 1 over group 2 | 0.961 | 0.898 | 1.03 | log | ClinicalTrials.gov | |
| Number needed to treat, for one fewer participant with a serious adverse event on Rivaroxaban than on Warfarin | 108 | from the risk difference interval | the interval includes no difference | ClinicalTrials.gov |
Groups 2
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 | Source |
|---|---|---|---|---|---|---|
| Group 1 | Rivaroxaban | Rivaroxaban 15 mg p.o. once daily or Rivaroxaban 20 mg p.o. once daily | 2,649 | 7,111 | EG000 | ClinicalTrials.gov |
| Group 2 | Warfarin | Warfarin (1 mg, 2.5 mg, or 5 mg p.o. once daily) | 2,720 | 7,125 | EG001 | ClinicalTrials.gov |
Harm 2
| Field | Value | Source |
|---|---|---|
| What it counts | Total, serious adverse events | ClinicalTrials.gov |
| Time frame | ClinicalTrials.gov |
Trial 8
| Field | Value | Source |
|---|---|---|
| Title | An Efficacy and Safety Study of Rivaroxaban With Warfarin for the Prevention of Stroke and Non-Central Nervous System Systemic Embolism in Patients With Non-Valvular Atrial Fibrillation | ClinicalTrials.gov |
| NCT number | NCT00403767 | ClinicalTrials.gov |
| Phases | PHASE3 | ClinicalTrials.gov |
| Conditions | Atrial Fibrillation, Stroke, Embolism | ClinicalTrials.gov |
| Interventions | Rivaroxaban, Warfarin, Matching placebo for Rivaroxaban arm (Warfarin placebo), Matching placebo for Warfarin arm (Rivaroxaban placebo) | ClinicalTrials.gov |
| Lead sponsor | Johnson & Johnson Pharmaceutical Research & Development, L.L.C. | ClinicalTrials.gov |
| Results first posted | 2012-07-17 | ClinicalTrials.gov |
| Results on ClinicalTrials.gov | https://clinicaltrials.gov/study/NCT00403767?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.