Comparison · NCT04558554-ad75ef80
Study 1a: Pharmacy-based PrEP Delivery (13 Months) vs Study 2: Pharmacy-based PrEP Delivery Pilot Extension (6 Months): PrEP Adherence
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. Study 1a: Pharmacy-based PrEP Delivery (13 Months) vs Study 2: Pharmacy-based PrEP Delivery Pilot Extension (6 Months): PrEP Adherence. Trial comparisons, record NCT04558554-ad75ef80. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT04558554-ad75ef80
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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 | 0.262 | 0.168 | 0.384 | wilson | |
| Risk in group 2 | 0.333 | 0.217 | 0.475 | wilson | |
| Risk difference, group 1 minus group 2 | -0.071 | -0.241 | 0.0977 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 0.787 | 0.44 | 1.41 | log | |
| Odds ratio, group 1 over group 2 | 0.711 | 0.311 | 1.63 | log | |
| Number needed to treat, for one fewer participant with the outcome on Study 1a: Pharmacy-based PrEP Delivery (13 Months) than on Study 2: Pharmacy-based PrEP Delivery Pilot Extension (6 Months) | 14.1 | 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 | Study 1a: Pharmacy-based PrEP Delivery (13 Months) | Participants in this study will have the option to initiate and/or refill pre-exposure prophylaxis (PrEP) at 4 retail pharmacies in Kenya. | 16 | 61 | OG000 |
| Group 2 | Study 2: Pharmacy-based PrEP Delivery Pilot Extension (6 Months) | Participants in this study will have the option to initiate and/or refill pre-exposure prophylaxis (PrEP) or initiate PEP at 12 retail pharmacies in Kenya. Additionally, at a subset of 4 pharmacies, participants will have the option to undergo STI testing. | 16 | 48 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- SECONDARY
- Title
- PrEP Adherence
- Description
- Study 1a and Study 2: Percentage of randomly selected DBS samples with drug concentrations indicating PrEP adherence
- Time frame
- Over 12-month duration of Study 1a and the 6-month duration of Study 2
- Population
- Study 1a and Study 2: Number of DBS samples randomly selected for drug concentration testing. Note: DBS samples were only collected from participants who had initiated PrEP at a pilot pharmacy.
Source ClinicalTrials.gov
Trial
- Title
- Pharmacy Delivery to Expand the Reach of PrEP in Kenya
- NCT number
- NCT04558554
- Phases
- NA
- Conditions
- HIV Prevention
- Interventions
- pharmacy-based PrEP delivery
- Lead sponsor
- University of Washington
- Results first posted
- 2024-03-15
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT04558554?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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