Comparison · NCT00387088-c1c5a67a
Tiotropium vs Placebo: Number of Patients With at Least One COPD Exacerbation
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. Tiotropium vs Placebo: Number of Patients With at Least One COPD Exacerbation. Trial comparisons, record NCT00387088-c1c5a67a. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT00387088-c1c5a67a
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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 | 0.353 | 0.332 | 0.375 | wilson | |
| Risk in group 2 | 0.431 | 0.409 | 0.453 | wilson | |
| Risk difference, group 1 minus group 2 | -0.0779 | -0.108 | -0.0472 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 0.819 | 0.757 | 0.887 | log | |
| Odds ratio, group 1 over group 2 | 0.721 | 0.633 | 0.82 | log | |
| Number needed to treat, for one fewer participant with the outcome on Tiotropium than on Placebo | 12.8 | 9.23 | 21.2 | 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 | Tiotropium | Tiotropium 5µg via Respimat® inhaler (2 inhalations of 2.5µg per day) + usual maintenance treatment (only anticholinergic bronchodilators were excluded) | 685 | 1,939 | OG000 |
| Group 2 | Placebo | Placebo via Respimat® inhaler (2 inhalations per day) + usual maintenance treatment (only anticholinergic bronchodilators were excluded) | 842 | 1,953 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- SECONDARY
- Title
- Number of Patients With at Least One COPD Exacerbation
- Description
- Number of patients with at least one COPD exacerbation (defined as a complex of respiratory events/symptoms (increase or new onset) with a duration of 3 days or more requiring a change in treatment)
- Time frame
- During actual study treatment period (planned Day 1 to Day 337)
- Population
- The FAS was made up of all randomised and treated participants excluding 99 patients with questionable data.
Source ClinicalTrials.gov
Trial
- Title
- Tiotropium / Respimat One Year Study in COPD.
- NCT number
- NCT00387088
- Phases
- PHASE3
- Conditions
- Pulmonary Disease, Chronic Obstructive
- Interventions
- Respimat, Tiotropium
- Lead sponsor
- Boehringer Ingelheim
- Results first posted
- 2010-01-22
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT00387088?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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