Comparison · NCT04308668-0dd710f9
Treatment vs Placebo: Rate of All-Cause Study Medicine Discontinuation or Withdrawal
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. Treatment vs Placebo: Rate of All-Cause Study Medicine Discontinuation or Withdrawal. Trial comparisons, record NCT04308668-0dd710f9. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT04308668-0dd710f9
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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 | 0.15 | 0.125 | 0.18 | wilson | |
| Risk in group 2 | 0.0983 | 0.0776 | 0.124 | wilson | |
| Risk difference, group 1 minus group 2 | 0.0521 | 0.016 | 0.0883 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 1.53 | 1.14 | 2.06 | log | |
| Odds ratio, group 1 over group 2 | 1.62 | 1.16 | 2.28 | log | |
| Number needed to treat, for one more participant with the outcome on Treatment than on Placebo | 19.2 | 11.3 | 62.4 | from the risk difference interval |
Source ClinicalTrials.gov
Groups2
Group 2 names the comparator: placebo.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code |
|---|---|---|---|---|---|
| Group 1 | Treatment | Participants in this arm will receive the study drug.~Hydroxychloroquine: 200mg tablet; 800 mg orally once, followed in 6 to 8 hours by 600 mg, then 600mg once a day for 4 consecutive days | 97 | 645 | OG000 |
| Group 2 | Placebo | Participants in this arm will receive a placebo treatment.~Placebo: 4 placebo tablets once, followed in 6 to 8 hours by 3 tablets, then 3 tablets once-a-day for 4 consecutive days | 63 | 641 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- SECONDARY
- Title
- Rate of All-Cause Study Medicine Discontinuation or Withdrawal
- Description
- Outcome reported as the number of participants in each arm who discontinue or withdraw medication use for any reason.
- Time frame
- 14 days
- Population
Source ClinicalTrials.gov
Trial
- Title
- Post-exposure Prophylaxis / Preemptive Therapy for SARS-Coronavirus-2
- NCT number
- NCT04308668
- Phases
- PHASE3
- Conditions
- Corona Virus Infection, Acute Respiratory Distress Syndrome, SARS-CoV Infection, Coronavirus, Coronavirus Infections
- Interventions
- Hydroxychloroquine, Placebo
- Lead sponsor
- University of Minnesota
- Results first posted
- 2021-05-13
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT04308668?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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