Comparison · NCT04180462-31886cd6
Intervention Group vs Wait List Control Group: Initiation of the HPV Vaccine 2-dose Series.
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 Group vs Wait List Control Group: Initiation of the HPV Vaccine 2-dose Series. Trial comparisons, record NCT04180462-31886cd6. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT04180462-31886cd6
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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 | 0.801 | 0.784 | 0.817 | wilson | |
| Risk in group 2 | 0.755 | 0.733 | 0.775 | wilson | |
| Risk difference, group 1 minus group 2 | 0.0462 | 0.0194 | 0.0733 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 1.06 | 1.02 | 1.1 | log | |
| Odds ratio, group 1 over group 2 | 1.31 | 1.12 | 1.53 | log | |
| Number needed to treat, for one more participant with the outcome on Intervention Group than on Wait List Control Group | 21.6 | 13.6 | 51.4 | from the risk difference interval |
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 | Intervention Group | Practices randomly assigned to this arm will receive the multi-component intervention. | 1,723 | 2,151 | OG000 |
| Group 2 | Wait List Control Group | Practices randomly assigned to this arm will be offered the intervention in the last two years of the study. | 1,219 | 1,615 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- PRIMARY
- Title
- Initiation of the HPV Vaccine 2-dose Series.
- Description
- The proportion of eligible preteens who initiate the HPV vaccine before their 13th birthday, at 24 months, post randomization
- Time frame
- 24 months
- Population
Source ClinicalTrials.gov
Trial
- Title
- Increasing Optimal Use of HPV Vaccination in Primary Care
- NCT number
- NCT04180462
- Phases
- NA
- Conditions
- Human Papillomavirus Vaccines
- Interventions
- Practice Facilitation, Education, Audit and Feedback, Communication Strategy
- Lead sponsor
- Washington University School of Medicine
- Results first posted
- 2024-02-20
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT04180462?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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