Vaccinated vs Unvaccinated: Across Years, Estimate the Difference in Carriage Prevalence of N. Meningitidis Genogroups Causing Disease (A, B, C, W, X, Y) Between South Australian School Leavers Who Received 4CMenB Vaccine and Unvaccinated Students
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
Measures 6
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
| Measure | Value | 95% interval, lower | 95% interval, upper | Method | Note | Source |
|---|---|---|---|---|---|---|
| Risk in group 1 | 0.0515 | 0.045 | 0.0589 | wilson | ClinicalTrials.gov | |
| Risk in group 2 | 0.0547 | 0.047 | 0.0635 | wilson | ClinicalTrials.gov | |
| Risk difference, group 1 minus group 2 | -0.00318 | -0.0142 | 0.00749 | newcombe hybrid score | ClinicalTrials.gov | |
| Risk ratio, group 1 over group 2 | 0.942 | 0.769 | 1.15 | log | ClinicalTrials.gov | |
| Odds ratio, group 1 over group 2 | 0.939 | 0.758 | 1.16 | log | ClinicalTrials.gov | |
| Number needed to treat, for one fewer participant with the outcome on Vaccinated than on Unvaccinated | 315 | from the risk difference interval | the interval includes no difference | ClinicalTrials.gov |
Groups 2
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 | Source |
|---|---|---|---|---|---|---|
| Group 1 | Vaccinated | 4CMenB vaccinated school leavers | 200 | 3,885 | OG000 | ClinicalTrials.gov |
| Group 2 | Unvaccinated | 4CMenB unvaccinated school leavers | 159 | 2,909 | OG001 | ClinicalTrials.gov |
Outcome 5
| Field | Value | Source |
|---|---|---|
| Type | SECONDARY | ClinicalTrials.gov |
| Title | Across Years, Estimate the Difference in Carriage Prevalence of N. Meningitidis Genogroups Causing Disease (A, B, C, W, X, Y) Between South Australian School Leavers Who Received 4CMenB Vaccine and Unvaccinated Students | ClinicalTrials.gov |
| Description | As measured by PCR in vaccinated and unvaccinated school leavers | ClinicalTrials.gov |
| Time frame | 2018 to 2019 | ClinicalTrials.gov |
| Population | ClinicalTrials.gov |
Trial 8
| Field | Value | Source |
|---|---|---|
| Title | Study to Assess Oropharyngeal Carriage of N. Meningitidis in South Australian School Leavers | ClinicalTrials.gov |
| NCT number | NCT03419533 | ClinicalTrials.gov |
| Phases | ClinicalTrials.gov | |
| Conditions | Neisseria Meningitidis | ClinicalTrials.gov |
| Interventions | ClinicalTrials.gov | |
| Lead sponsor | University of Adelaide | ClinicalTrials.gov |
| Results first posted | 2021-11-05 | ClinicalTrials.gov |
| Results on ClinicalTrials.gov | https://clinicaltrials.gov/study/NCT03419533?tab=results | ClinicalTrials.gov |
Source 4
| Field | Value | Source |
|---|---|---|
| Release | trial-comparisons-2026-03-23-0.1.0 | ClinicalTrials.gov |
| Release manifest SHA-256 | f66225897fbf258b57ea10bdacfd0347d3cdfda93f7f5685234b7e06ea36fa57 | ClinicalTrials.gov |
| AACT copy | 2026-03-23 | ClinicalTrials.gov |
| 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 | ClinicalTrials.gov |
Release trial-comparisons-2026-03-23-0.1.0
ClinicalTrials.gov's posted results, through CTTI's AACT: ClinicalTrials.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.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.
ClinicalTrials.gov: none 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.