Pre-pandemic vs Pandemic: deaths from any cause
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 | 0 | 0.000446 | wilson | ClinicalTrials.gov | |
| Risk in group 2 | 0.000341 | 0.0000602 | 0.00193 | wilson | ClinicalTrials.gov | |
| Risk difference, group 1 minus group 2 | -0.000341 | -0.00193 | 0.000186 | newcombe hybrid score | ClinicalTrials.gov | |
| Risk ratio, group 1 over group 2 | log | a group has no participants with the outcome | ClinicalTrials.gov | |||
| Odds ratio, group 1 over group 2 | log | a cell of the two-by-two table is zero | ClinicalTrials.gov | |||
| Number needed to treat, for one fewer death from any cause on Pre-pandemic than on Pandemic | 2,930 | 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 | Pre-pandemic | Patients that underwent elective bariatric surgery in a control period prior to the pandemic (one year from 1st September 2018). | 0 | 8,615 | EG000 | ClinicalTrials.gov |
| Group 2 | Pandemic | Patients that underwent elective bariatric surgery during the pandemic (one year from 1st April 2020)~COVID-19 pandemic: Pandemic group underwent surgery during the COVID-19 pandemic. Pre-pandemic group underwent surgery prior to the pandemic. | 1 | 2,930 | EG001 | ClinicalTrials.gov |
Harm 2
| Field | Value | Source |
|---|---|---|
| What it counts | Total, all-cause mortality | ClinicalTrials.gov |
| Time frame | 1 year | ClinicalTrials.gov |
Trial 8
| Field | Value | Source |
|---|---|---|
| Title | Bariatric Surgery and COVID-19 | ClinicalTrials.gov |
| NCT number | NCT05532891 | ClinicalTrials.gov |
| Phases | ClinicalTrials.gov | |
| Conditions | COVID-19, Bariatric Surgery Candidate | ClinicalTrials.gov |
| Interventions | COVID-19 pandemic | ClinicalTrials.gov |
| Lead sponsor | Imperial College London | ClinicalTrials.gov |
| Results first posted | 2023-12-01 | ClinicalTrials.gov |
| Results on ClinicalTrials.gov | https://clinicaltrials.gov/study/NCT05532891?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.