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Comparison · NCT03879538-sae

The Nitrous Oxide Group vs The Control Group: serious adverse events

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. The Nitrous Oxide Group vs The Control Group: serious adverse events. Trial comparisons, record NCT03879538-sae. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT03879538-sae

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Measures6

Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.

MeasureValue95% interval, lower95% interval, upperMethodNote
Risk in group 1000.161wilson
Risk in group 200.00000000000000001390.138wilson
Risk difference, group 1 minus group 20-0.1380.161newcombe hybrid score
Risk ratio, group 1 over group 2loga group has no participants with the outcome
Odds ratio, group 1 over group 2loga cell of the two-by-two table is zero
Number needed to harmfrom the risk difference intervalthe two groups' risks are equal

Groups2

Neither group, or both, names a comparator, so the groups keep ClinicalTrials.gov's order.

GroupTitleDescriptionWith the outcomeAnalysedClinicalTrials.gov code
Group 1The Nitrous Oxide Group
Nitrous oxide group will receive 50% nitrous oxide mixed with 50% oxygen, inhalation therapy for a duration of 2 hours via an FDA-approved mask breathing circuit.~Nitrous Oxide: A total of three inhalation treatments with 50% Nitrous Oxide plus 50% oxygen (6 total exposure hours) over one week with 2 or 3 days between each session.
020EG000
Group 2The Control Group
Control group will receive 100% oxygen, inhalation therapy for a duration of 2 hours via an FDA-approved mask breathing circuit.~Oxygen: A total of three inhalation treatments with 100% oxygen (6 total exposure hours) over one week with 2 or 3 days between each session.
024EG001

Harm

What it counts
Total, serious adverse events
Time frame

Source ClinicalTrials.gov

Trial

Title
Nitrous Oxide for the Treatment of Complex Regional Pain Syndrome
NCT number
NCT03879538
Phases
PHASE3
Conditions
Complex Regional Pain Syndrome
Interventions
Nitrous Oxide, Oxygen
Lead sponsor
The Cleveland Clinic
Results first posted
2024-02-09

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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