Intervention vs Control: Number of Participants With Spine Surgery Within 18 Month of Index Imaging
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 | 0.0312 | 0.0302 | 0.0322 | wilson | ClinicalTrials.gov | |
| Risk in group 2 | 0.032 | 0.031 | 0.033 | wilson | ClinicalTrials.gov | |
| Risk difference, group 1 minus group 2 | -0.000783 | -0.00219 | 0.000619 | newcombe hybrid score | ClinicalTrials.gov | |
| Risk ratio, group 1 over group 2 | 0.976 | 0.933 | 1.02 | log | ClinicalTrials.gov | |
| Odds ratio, group 1 over group 2 | 0.975 | 0.931 | 1.02 | log | ClinicalTrials.gov | |
| Number needed to treat, for one fewer participant with the outcome on Intervention than on Control | 1,280 | from the risk difference interval | the interval includes no difference | ClinicalTrials.gov |
Groups 2
Group 2 names the comparator: control.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code | Source |
|---|---|---|---|---|---|---|
| Group 1 | Intervention | Participants with index imaging at a clinic on or after the randomized date at which the clinic started the intervention. | 3,785 | 121,431 | OG001 | ClinicalTrials.gov |
| Group 2 | Control | Participants with index imaging at a clinic prior to the randomized date at which the clinic started the intervention. | 3,753 | 117,455 | OG000 | ClinicalTrials.gov |
Outcome 5
| Field | Value | Source |
|---|---|---|
| Type | SECONDARY | ClinicalTrials.gov |
| Title | Number of Participants With Spine Surgery Within 18 Month of Index Imaging | ClinicalTrials.gov |
| Description | An indicator or one or more spine surgeries within 18 months of index imaging. Spine surgery includes decompression surgery, spinal fusion or proxies for spine fusion, or other surgeries involving the lumbar, sacral, or thoracic spine. | ClinicalTrials.gov |
| Time frame | 18 months | ClinicalTrials.gov |
| Population | ClinicalTrials.gov |
Trial 8
| Field | Value | Source |
|---|---|---|
| Title | Trial of Inserting Prevalence Information Into Lumbar Spine Imaging Reports | ClinicalTrials.gov |
| NCT number | NCT02015455 | ClinicalTrials.gov |
| Phases | NA | ClinicalTrials.gov |
| Conditions | Low Back Pain, Back Pain, Lumbar Pain, Backache | ClinicalTrials.gov |
| Interventions | Epidemiologic benchmarks included in lumbar imaging reports | ClinicalTrials.gov |
| Lead sponsor | University of Washington | ClinicalTrials.gov |
| Results first posted | 2022-02-14 | ClinicalTrials.gov |
| Results on ClinicalTrials.gov | https://clinicaltrials.gov/study/NCT02015455?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.