Comparison · NCT01873287-7695ed1d
PPCS in Derivation vs PPCS in Validation: Count of Children Who Have Persistent Post-concussive Symptoms (PCS) at One-month Follow-up.
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. PPCS in Derivation vs PPCS in Validation: Count of Children Who Have Persistent Post-concussive Symptoms (PCS) at One-month Follow-up. Trial comparisons, record NCT01873287-7695ed1d. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT01873287-7695ed1d
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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 | 0.3 | 0.279 | 0.322 | wilson | |
| Risk in group 2 | 0.33 | 0.299 | 0.361 | wilson | |
| Risk difference, group 1 minus group 2 | -0.0297 | -0.0679 | 0.00776 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 0.91 | 0.808 | 1.02 | log | |
| Odds ratio, group 1 over group 2 | 0.871 | 0.732 | 1.04 | log | |
| Number needed to treat, for one fewer participant with the outcome on PPCS in Derivation than on PPCS in Validation | 33.6 | 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 | PPCS in Derivation | August 2013 to September 2014 | 510 | 1,701 | OG000 |
| Group 2 | PPCS in Validation | October 2014 to June 2015 | 291 | 883 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- PRIMARY
- Title
- Count of Children Who Have Persistent Post-concussive Symptoms (PCS) at One-month Follow-up.
- Description
The primary outcome is the number of of children aged 5 - 17 years who have PCS at one-month follow-up. A PCS case is defined as an increase from pre-concussion baseline of three or more symptoms on the validated PCSI at one-month (consistent with the ICD-10 definition of PCS).
- Time frame
- 1 month
- Population
- Completed 1-month followup.
Source ClinicalTrials.gov
Trial
- Title
- Predicting Persistent Postconcussive Problems in Pediatrics (5P)
- NCT number
- NCT01873287
- Phases
- Conditions
- Concussions, PCS
- Interventions
- Lead sponsor
- Children's Hospital of Eastern Ontario
- Results first posted
- 2019-11-18
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT01873287?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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