Influenza Burden Assessment in the United States, July1997 - up to April 2009
Completed
- Conditions
- Influenza
- Interventions
- Other: Data collection
- Registration Number
- NCT01599390
- Lead Sponsor
- GlaxoSmithKline
- Brief Summary
The study will assess the burden of severe influenza outcomes by age, risk status, and influenza subtype, in order to create a profile of the burden of influenza-related morbidity and mortality in United States from July 1997 to April 2009.
- Detailed Description
This epidemiological study is a modelling of time series retrospectively extracted from multiple databases. Data will be extracted from existing electronic healthcare databases.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 1
Inclusion Criteria
- Recorded in the US NIS hospitalization data or the US National Vital Statistics System (NVSS) mortality data with a pre-specified diagnostic code.
Exclusion Criteria
- Missing data in the following fields: age, primary discharge diagnosis, admission month (NIS) /month of death (NVSS), and status at discharge (alive / dead).
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Arm && Interventions
Group Intervention Description Influenza Group Data collection -
- Primary Outcome Measures
Name Time Method Occurrences of potentially influenza-attributable hospitalization or death by age, risk status, region and season. From July 1997 to April 2009 (i.e., up to almost 12 years) Amount of circulating influenza A and B, and RSV strains determined for each season. From July 1997 to April 2009 (i.e., up to almost 12 years)
- Secondary Outcome Measures
Name Time Method Influenza vaccine content and effectiveness by season. From July 1997 to April 2009 (i.e., up to almost 12 years) Influenza vaccine coverage by season. From July 1997 to April 2009 (i.e., up to almost 12 years)