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Infections, RotavirusNCT01682005

Study to Analyze the Clinical and Cost Impact of Complete and Incomplete Rotavirus (RV) Vaccination

An observational study of Infections, Rotavirus, run by GlaxoSmithKline.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This study aims to estimate the clinical and cost impact of RV vaccinations (both Rotateq® and Rotarix®) among children aged less than 5 years using insurance claims data from commercial plans and Medicaid low-income population. Read more about this study

Who is it for?
Ages Up to 5 yearsHealthy volunteers can take part
Conditions the study is for
Infections, Rotavirus
What is being tested?
Data interpretation
Type of treatment
Vaccines
How many people
1 participants
Where
No sites listed yet
Study dates
Aug 2012to Aug 2013
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Up to 5 years
  • All sexes
  • Healthy volunteers accepted
  • Child

Study population: Children less than 5 years old continuously enrolled in commercial insurance or Medicaid from birth, and received both medical and pharmacy benefits.

Who may be able to join

  • Continuously enrolled from birth. (Note: Due to the absence of birth dates in insurance claims data, this inclusion criterion will be met if a child's year of first enrollment and year of birth are the same. If so, then the date of first enrollment will be used as proxy for date of birth.)
  • Received both medical and pharmacy benefits.

Who cannot join

  • Enrolled in capitation-based health plans.
  • For MarketScan Commercial, residence in states with universal vaccination programs that include the RV vaccine or where RV vaccine inclusion cannot be ascertained (i.e., Alaska, Idaho, Massachusetts, Maine, North Dakota, New Hampshire, New Mexico, Oregon, Rhode Island, Vermont, Washington, Wisconsin, and Wyoming).
  • Lost to follow-up or had RV prior to 6 weeks of age.

About this study

Official title: Clinical and Cost Impact of Complete and Incomplete Rotavirus Vaccination

This study aims to estimate the clinical and cost impact of RV vaccinations (both Rotateq® and Rotarix®) among children aged less than 5 years using insurance claims data from commercial plans and Medicaid low-income population. The impact of incomplete and complete RV vaccination will also be examined, overall and stratified by age (e.g., 6 weeks to 8 months, 8 months and onwards ) and calendar time of RV vaccination (e.g., 2006 onward).

Read the detailed description

Insurance claims data from the MarketScan Commercial Claims and Encounters Database {MarketScan Commercial (2000-2011[Q2])} and the MarketScan Multi-State Medicaid Database {Marketscan Medicaid (2002-2010)} will be analyzed separately; no merging of the databases will occur.

The claims data extracts are fully de-identified and compliant with the Health Insurance Portability and Accountability Act of 1996 (U.S.) (HIPAA).

For children who received at least 1 RV vaccine dose within the Advisory Committee on Immunization Practices (ACIP)-specified vaccination window of 6 weeks to 8 months old, their observation time will be divided into three RV-vaccinated cohorts: any RV vaccination before 8 months (i.e., during the vaccination window between 6 weeks and 8 months old); complete RV vaccination (i.e., after 8 months old); and incomplete RV vaccination (i.e., after 8 months old). For children who did not receive any RV vaccine dose within the vaccination window, their observation time will be divided into four control cohorts: historical (i.e., before RV vaccines were available) unvaccinated on/before 8 months old; contemporary (i.e., after RV vaccines were available) unvaccinated on/before 8 months old; historical unvaccinated after 8 months old; and contemporary unvaccinated after 8 months old.

Being tested
Data interpretation
Keywords
Cost, Children, Rotavirus, Rotavirus vaccination, Clinical
Medical subject headings
Rotavirus Infections

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Data interpretationOther

    The data collected for each group will be fully de-identified, interpreted and analysed separately for the 2 databases (MarketScan Commercial and MarketScan Medicaid).

Study groups in NCT01682005
Study groupRoleWhat they receive
Complete RV vaccinationSubjects had received 2 doses of Rotarix or 3 doses of Rotateq/mixed within the vaccination window and the observation time is from the end of the vaccination window (8 months old) to end of observation.
Receives: Other: Data interpretation
Incomplete RV vaccinationSubjects received at least one vaccination but less than complete vaccination has been received within the vaccination window and the observation time from 8 months old (if still observed) to end of observation.
Receives: Other: Data interpretation
Any RV vaccination before 8 monthsSubjects received any vaccination within the vaccination window and the observation time from 6 weeks old to earliest of end of observation or 8 months old.
Receives: Other: Data interpretation
Historical unvaccinated on/before 8 months oldSubjects did not receive any RV vaccination within the vaccination window and the observation time is from 6 weeks old (if still observed and on/before 12/31/06) to earliest of: 12/31/2006, end of observation, or 8 months old.
Receives: Other: Data interpretation
Historical unvaccinated after 8 months oldSubjects did not receive any RV vaccination within the vaccination window and observation time is from 8 months old (if still observed and on/before 12/31/2006) to earliest of: 12/31/2006 or end of observation.
Receives: Other: Data interpretation
Contemporary unvaccinated on/before 8 months oldSubjects did not receive any RV vaccination within the vaccination window and observation time is from 6 weeks old (if on/after 01/01/2007) to earliest of: end of observation, or 8 months old.
Receives: Other: Data interpretation
Contemporary unvaccinated after 8 months oldSubjects did not receive any RV vaccination within the vaccination window observation time is from 8 months old (if on/after 01/01/2007) to end of observation.
Receives: Other: Data interpretation

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Estimation of the clinical impact of complete and incomplete RV vaccination among children less than 5 years of age by determining the incidence of first RV episode.

    Each RV episode will last from 14 days before the first RV-coded claim to 14 days after the last RV-coded claim, unless censored by birth at the start and/or by end of observation at the end. For each cohort, incidence rates will be calculated as the number of first RV episodes that occurred divided by the cohort's person-years of observation censored at the start of first RV episodes.

    Measured: During the study period (from January 2000 up to June 2011), an expected average of 1 year and 6 months.

  2. Estimation of the clinical impact of complete and incomplete RV vaccination among children less than 5 years of age by calculating the RV-related resource utilization.

    For each cohort, utilization rates will be calculated as the number of RV-related hospitalizations, ER visits, and outpatient visits utilized divided by the cohort's total person-years of observation.

    Measured: During the study period (from January 2000 up to June 2011), an expected average of 1 year and 6 months.

  3. Estimation of the clinical impact of complete and incomplete RV vaccination among children less than 5 years of age by calculating the diarrhea-related resource utilization.

    For each cohort, utilization rates will be calculated as the number of diarrhea-related hospitalizations, ER visits, and outpatient visits utilized divided by the cohort's total person-years of observation.

    Measured: During the study period (from January 2000 up to June 2011), an expected average of 1 year and 6 months.

  4. Estimation of the cost impact of complete and incomplete RV vaccination among children less than 5 years of age by determining the first RV episode costs.

    Costs will be reported on a per-patient per-month (PPPM) basis, using the episode duration in person-months as the weight. For each cohort, an average PPPM cost of first RV episodes will be calculated.

    Measured: During the study period (from January 2000 up to June 2011), an expected average of 1 year and 6 months.

  5. Estimation of the cost impact of complete and incomplete RV vaccination among children less than 5 years of age by calculating the RV-related healthcare costs.

    For each cohort, total RV-related per-patient per-year (PPPY) costs will be calculated as the total cost of RV-related hospitalizations, ER visits, and outpatient visits utilized divided by the cohort's total person-years of observation.

    Measured: During the study period (from January 2000 up to June 2011), an expected average of 1 year and 6 months.

  6. Estimation of the cost impact of complete and incomplete RV vaccination among children less than 5 years of age by calculating the diarrhea-related healthcare costs.

    For each cohort, total diarrhea-related PPPY costs will be calculated as the total cost of diarrhea-related hospitalizations, ER visits, and outpatient visits utilized divided by the cohort's total person-years of observation.

    Measured: During the study period (from January 2000 up to June 2011), an expected average of 1 year and 6 months.

  7. Estimation of the clinical impact of complete and incomplete RV vaccination among children less than 5 years of age by calculating the first diarrhea episode costs.

    Measured: During the study period (from 2000 up to June 2011).

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted10 Sep 2012 (estimated)
  2. Study startAug 2012
  3. Primary completionAug 2013
  4. Study completionAug 2013

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Retrospective
Enrolment
1 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01682005
Sponsor's protocol ID
116829
Status last verified
Aug 2014
First submitted
6 Sep 2012
Last updated
1 Sep 2014
Results posted
No

Publications

  • Krishnarajah G, Duh MS, Korves C, Demissie K. Public Health Impact of Complete and Incomplete Rotavirus Vaccination among Commercially and Medicaid Insured Children in the United States. PLoS One. 2016 Jan 11;11(1):e0145977. doi: 10.1371/journal.pone.0145977. eCollection 2016.

    PubMed 26751375

Questions about this trial

What is this clinical trial studying?

An observational study of Infections, Rotavirus, run by GlaxoSmithKline.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 1 Sep 2014. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Estimation of the clinical impact of complete and incomplete RV vaccination among children less than 5 years of age by determining the incidence of first RV episode. (time frame: During the study period (from January 2000 up to June 2011), an expected average of 1 year and 6 months.). The study lists 7 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01682005, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Sep 2014.

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