Comparison · NCT04234698-d88c3be7
Warfarin vs NOACs: Number of Participants With Anemia at Start of OAC Treatment
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. Warfarin vs NOACs: Number of Participants With Anemia at Start of OAC Treatment. Trial comparisons, record NCT04234698-d88c3be7. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT04234698-d88c3be7
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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 | 0.135 | 0.107 | 0.169 | wilson | |
| Risk in group 2 | 0.134 | 0.118 | 0.152 | wilson | |
| Risk difference, group 1 minus group 2 | 0.000877 | -0.0324 | 0.0386 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 1.01 | 0.774 | 1.31 | log | |
| Odds ratio, group 1 over group 2 | 1.01 | 0.744 | 1.36 | log | |
| Number needed to treat, for one more participant with the outcome on Warfarin than on NOACs | 1,140 | 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 | Warfarin | Participants diagnosed with NVAF who initiated treatment with warfarin between 01-January-2013 to 30-June-2018 were observed in this retrospective study. Participants were followed up until July 2019. | 62 | 459 | OG000 |
| Group 2 | NOACs | Participants diagnosed with NVAF, who initiated treatment with any of the NOACs (dabigatran, rivaroxaban and apixaban) between 01-January-2013 and 30-June-2018 were observed in this retrospective study. Participants who were exposed to warfarin before 2013 and initiated NOACs between 01-January-2013 and 30-June-2018 were also included. Participants were followed up until July 2019. | 217 | 1,617 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- PRIMARY
- Title
- Number of Participants With Anemia at Start of OAC Treatment
- Description
- Index date was defined as the first prescription with OAC (i.e., warfarin or NOAC) for NVAF between 01-January-2013 to 30-June-2018.
- Time frame
- At index date (anytime between 01-January-2013 to 30-June-2018)
- Population
Analysis population included all eligible participants diagnosed with NVAF who initiated treatment with warfarin and NOACs between 01-January-2013 to 30-June-2018 or who were exposed to warfarin before 2013 and initiated treatment with NOACs within the established period.
Source ClinicalTrials.gov
Trial
- Title
- Patient Characteristics, Treatment Patterns And Incidence Of Events (Discontinuation, Persistence, Key Primary Clinical Outcomes) In NVAF Patients Initiating OAC Therapy In Colombia
- NCT number
- NCT04234698
- Phases
- Conditions
- Atrial Fibrillation
- Interventions
- Lead sponsor
- Pfizer
- Results first posted
- 2025-02-06
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT04234698?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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