A Study of 2 Doses of VAQTA™ in Healthy Children 12 to 23 Months of Age (V251-069)
Model scores of the 29,894 trials active now.
Model score 2% for any early termination, 0% for termination due to slow enrollment. Past trials like this one (phase, sponsor type and disease area, started 2008–2016) ended terminated 10% of the time (1,463 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 2008-10-31, after 2008-03-31 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 2008-10-31. 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: subject hasmonths ofsafety tolerabilitysubject isdoses
Phrases that lowered it: vaccinehealthyimmunogenicityvaccinationinactivated -
Accepts healthy volunteers: Yes (lowers risk) · Who can join
-
Sponsor's past termination rate: 15.1% (raises 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: 266 (raises risk) · Sponsor's track record
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Minimum age: 1 (lowers risk) · Who can join
-
Has a data monitoring committee: No (lowers risk) · Design
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Blinding: none (lowers risk) · Design
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Sponsor type: industry (lowers risk) · Sponsor's track record
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Drug's FAERS reports marked serious: no FAERS history (raises risk) · Drug's FDA history
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Drug's FAERS reports with a death: no FAERS history (raises risk) · Drug's FDA history
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Disease area, cancer: No (lowers risk) · Disease area
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Design: single group (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
- non randomized (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
- 0 (typical: 1)
Who can join
- Minimum age
- 1 (typical: 18)
- Maximum age
- 1.92 (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
- 370 (typical: 32)
- Sponsor's past termination rate
- 15.1% (typical: 9.9%)
- Trials the sponsor started in the prior 2 years
- 266 (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
- none of the 14 tracked areas
- 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
- To Evaluate the Immunogenicity and Safety of Inactivated Hepatitis A Vaccine NCT03654664 · started 2017 · scored riskier than 0% of active trials completed
- Study in Toddlers (12-18 Months) Comparing a Booster Dose of Vaxem Hib and Hiberix Vaccines for the Prevention of Haemophilus Influenzae Type b Infections in China NCT01025544 · started 2009 · scored riskier than 1% of active trials completed
- A Phase III Clinical Trial of Quadrivalent Influenza Vaccine in Healthy Subjects Aged 6 to 35 Months NCT06049927 · started 2023 · scored riskier than 0% of active trials completed
- Clinical Trial to Evaluate the Safety and Immunogenicity of Quadrivalent Influenza Vaccine (7.5μg/0.25ml) NCT03859141 · started 2018 · scored riskier than 0% of active trials completed
- Clinical Study to Evaluate the Safety, Immunogenicity and Efficacy of Investigational Flu Vaccine Compared to Approved Flu Vaccine in Children. NCT01964989 · started 2013 · scored riskier than 1% 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.