Comparison · NCT03244189-6edaa076
Intervention vs Control: Number of Participants With Growth of Existing Stone by ≥ 2 mm in Any Dimension
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. Intervention vs Control: Number of Participants With Growth of Existing Stone by ≥ 2 mm in Any Dimension. Trial comparisons, record NCT03244189-6edaa076. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT03244189-6edaa076
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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 | 0.0545 | 0.041 | 0.0721 | wilson | |
| Risk in group 2 | 0.0385 | 0.0274 | 0.0538 | wilson | |
| Risk difference, group 1 minus group 2 | 0.016 | -0.00442 | 0.0369 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 1.42 | 0.91 | 2.21 | log | |
| Odds ratio, group 1 over group 2 | 1.44 | 0.906 | 2.29 | log | |
| Number needed to treat, for one more participant with the outcome on Intervention than on Control | 62.4 | from the risk difference interval | the interval includes no difference |
Source ClinicalTrials.gov
Groups2
Group 2 names the comparator: control.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code |
|---|---|---|---|---|---|
| Group 1 | Intervention | Participants in the intervention arm will receive an individualized fluid prescription, which will be the additional volume of fluid intake needed to maintain a study-specified urine output. This fluid will be consumed from and measured by a smart water bottle. The intervention arm also includes a behavioral program that consists of financial incentives and structured problem solving (SPS) to maintain the recommended fluid intake.~Fluid prescription: The additional amount of fluid that the participant will need to consume each day, using the smart water bottle, in order to meet the study-specified urine output. This fluid is in addition to any other sources of fluid (ex. cups of coffee, bottled sports drink) that the participant consumes each day.~Financial incentive: Participants in the Intervention Arm who meet their fluid intake goal on randomly selected days will receive a small payment for that day.~Structured Problem Solving: Structure Problem Solving involves interactions with health coaches to help participants develop feasible solutions to overcoming personal barriers to maintaining the prescribed fluid intake. | 45 | 826 | OG000 |
| Group 2 | Control | Participants in the control arm will receive standard care instructions according to American Urological Association (AUA) guidelines to increase overall fluid consumption to achieve study-specified urine output. They will also receive a smart water bottle with capability to self-monitor their fluid intake. | 32 | 832 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- SECONDARY
- Title
- Number of Participants With Growth of Existing Stone by ≥ 2 mm in Any Dimension
- Description
- Comparison of the size of any stone on first observation versus later observations or at passage. Will be measured primarily through imaging (CT scan and ultrasound).
- Time frame
- Baseline through approximately 24 months
- Population
Source ClinicalTrials.gov
Trial
- Title
- Prevention of Urinary Stones With Hydration
- NCT number
- NCT03244189
- Phases
- NA
- Conditions
- Urinary Stones
- Interventions
- Fluid prescription, Financial incentive, Structured Problem Solving
- Lead sponsor
- Duke University
- Results first posted
- 2025-08-05
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT03244189?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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