Study of a Quadrivalent Influenza Vaccine Administered Via the Intramuscular Route in Children and Adolescents in Taiwan
Model scores of the 29,894 trials active now.
Model score 2% for any early termination, 1% for termination due to slow enrollment. Past trials like this one (phase, sponsor type and disease area, started 2008–2016) ended terminated 6% of the time (876 trials).
Finished trial that started 2008–2014: scored by a model trained without any trial from its start year, so its own outcome was never used.
How it ended
Completed on 2014-07-31, after 2013-10-31 start.
The score above never used this outcome: finished trial that started 2008–2014: scored by a model trained without any trial from its start year, so its own outcome was never used.
Termination over time, as the model saw it at the start
Cumulative chance of ending terminated (red) or completed (green) by each year from its start; it actually ended on 2014-07-31. The rest of the way to 100% is still running.
From the competing-risks survival model (termination vs completion, still-running trials censored), fit to trials that started 2008–2014 and recalibrated to termination rates over 2022–2024, since termination has become more common. Checked on past years, it still ran a little low when the rise continued.
What moved the score
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Wording of the registration (title, summary, criteria) (lowers risk) · Wording
Phrases that raised it: therapycancerchemotherapyradiationleast weeks
Phrases that lowered it: vaccinevaccinationinfluenzaand safetyreceipt -
Accepts healthy volunteers: Yes (lowers risk) · Who can join
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Sponsor's past termination rate: 2.5% (lowers risk) · Sponsor's track record
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Primary purpose: prevention (lowers risk) · Design
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Phase: 3 (lowers risk) · Design
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Trials the sponsor started in the prior 2 years: 29 (lowers risk) · Sponsor's track record
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Design: single group (raises risk) · Design
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Disease area, cancer: No (lowers risk) · Disease area
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Sponsor type: industry (lowers risk) · Sponsor's track record
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Sponsor's past trials: 160 (lowers risk) · Sponsor's track record
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Has a data monitoring committee: No (lowers risk) · Design
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Number of arms: 1 (raises risk) · Design
Every input that moved this score, largest first: SHAP contributions in log-odds, red raising risk and green lowering it. They describe the model, not causes of termination. Phrases are traced from the text features back to this registration's words, approximately.
The trial
Design
- Phase
- 3 (typical: 2)
- Number of arms
- 1 (typical: 2)
- Allocation
- not applicable (typical: randomized)
- Design
- single group (typical: parallel)
- Primary purpose
- prevention (typical: treatment)
- Blinding
- none
- Has a data monitoring committee
- No (typical: 56% yes)
- Responsible party
- sponsor
- Collaborators
- 0
- Keywords listed
- 2 (typical: 1)
Who can join
- Minimum age
- 9 (typical: 18)
- Maximum age
- 17 (typical: 71)
- Sex
- all
- Accepts healthy volunteers
- Yes (typical: 9% yes)
Sponsor's track record
- Sponsor type
- industry (typical: academic or other)
- Sponsor's past trials
- 160 (typical: 32)
- Sponsor's past termination rate
- 2.5% (typical: 9.9%)
- Trials the sponsor started in the prior 2 years
- 29 (typical: 19)
Drug's FDA history
- Drugs with FDA adverse-event history
- 0 (typical: 1)
- Drug has FAERS history
- No (typical: 64% yes)
- Drug's FAERS reports before start
- 0 (typical: 2148)
- Drug's FAERS reports in the prior 12 months
- 0 (typical: 412.5)
- Drug's FAERS reports marked serious
- no FAERS history (typical: 85.6%)
- Drug's FAERS reports with a death
- no FAERS history (typical: 15.9%)
Disease area and drugs
- Disease areas
- infectious disease, respiratory
- Drugs matched to FDA substances
- none matched
Typical values are among the trials active now. Sponsor and drug history are counted only up to this trial's start date.
Similar finished trials
- Immunogenicity and Safety of a Quadrivalent Influenza Vaccine Given by Intramuscular Route in Subjects Aged 18 to 60 Years NCT02550197 · started 2015 · scored riskier than 0% of active trials completed
- Study of a Quadrivalent Influenza Vaccine Administered Intramuscularly in Children/Adolescents and Adults NCT01481454 · started 2012 · scored riskier than 0% of active trials completed
- Study of Quadrivalent Influenza Vaccine Among Children NCT01240746 · started 2010 · scored riskier than 0% of active trials completed
- Study of a Single Dose or Two Doses of a Quadrivalent Influenza Vaccine in Subjects Aged 6 Months or Older in India NCT02451358 · started 2015 · scored riskier than 1% of active trials completed
- Immunogenicity and Safety of a Multi-Dose Quadrivalent Influenza Vaccine NCT03391193 · started 2017 · scored riskier than 0% of active trials completed
Closest by meaning of the registration text (PubMedBERT embeddings), among finished trials. How they ended is context, not an input to this trial's score.