Comparison · NCT03854019-f437c9ac
Dextromethorphan/Quinidine 20mg/10mg (DM/Q 20mg/10mg) vs Placebo: Number of Participants With Behavioral Suicidal Events, as Assessed by the Columbia-Suicide Severity Rating Scale (C-SSRS) - Suicidal Ideation
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
2 sourcestrial-comparisons-2026-03-23-0.1.0
Cite this record
ConductScience Library. Dextromethorphan/Quinidine 20mg/10mg (DM/Q 20mg/10mg) vs Placebo: Number of Participants With Behavioral Suicidal Events, as Assessed by the Columbia-Suicide Severity Rating Scale (C-SSRS) - Suicidal Ideation. Trial comparisons, record NCT03854019-f437c9ac. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT03854019-f437c9ac
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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 | 0 | 0.176 | wilson | |
| Risk in group 2 | 0 | 0 | 0.176 | wilson | |
| Risk difference, group 1 minus group 2 | 0 | -0.176 | 0.176 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | log | a group has no participants with the outcome | |||
| Odds ratio, group 1 over group 2 | log | a cell of the two-by-two table is zero | |||
| Number needed to treat | from the risk difference interval | the two groups' risks are equal |
Source ClinicalTrials.gov
Groups2
Group 2 names the comparator: placebo.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code |
|---|---|---|---|---|---|
| Group 1 | Dextromethorphan/Quinidine 20mg/10mg (DM/Q 20mg/10mg) | Dextromethorphan/quinidine (DM/Q) 20mg/10mg one capsule once daily for 1 week, followed by DM/Q 20mg /10 mg twice daily for subsequent 4 weeks, and finally DM/Q 20mg/10mg once daily for 7days. | 0 | 18 | OG000 |
| Group 2 | Placebo | Placebo one capsule once daily for 1 week, followed by placebo twice daily for subsequent 4 weeks, and finally placebo once daily for 7days. | 0 | 18 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- SECONDARY
- Title
- Number of Participants With Behavioral Suicidal Events, as Assessed by the Columbia-Suicide Severity Rating Scale (C-SSRS) - Suicidal Ideation
- Description
The C-SSRS is a suicidal ideation and behavior rating scale with yes/no responses. The first part (Items 1-5) rates an individual's degree of suicidal ideation on a 0-5 scale, ranging from wish to be dead to active suicidal ideation with specific plan and intent and behaviors. The C-SSRS outcomes are categories and have binary responses (yes/no). Suicidal ideation is considered when the patient responds a yes answer at any time during treatment to any one of the five suicidal ideation questions (Categories 1-5) on the C-SSRS. The sum of the 5 intensity item scores create a total score (range 0 to 25) to represent the intensity rating (higher scores indicate more severe suicidal ideation).
- Time frame
- 4 weeks
- Population
Source ClinicalTrials.gov
Trial
- Title
- Evaluating the Efficacy of Dextromethorphan/Quinidine in Treating Irritability in Huntington's Disease
- NCT number
- NCT03854019
- Phases
- PHASE3
- Conditions
- Huntington Disease, Irritability
- Interventions
- Dextromethorphan/quinidine 20mg/10mg (DM/Q 20mg/10mg), Placebo
- Lead sponsor
- The University of Texas Health Science Center, Houston
- Results first posted
- 2024-01-05
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT03854019?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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