tetano
Editor, Senior Moderator
Available online 23 May 2013
In Press, Uncorrected Proof ? Note to users
Cover image
Influenza-related health care utilization and productivity losses during seasons with and without a match between the seasonal and vaccine virus B lineage
Sudeep Karvea, Corresponding author contact information, E-mail the corresponding author,
Genevieve Meierb, E-mail the corresponding author,
Keith L. Davisa, E-mail the corresponding author,
Derek A. Misurskic, E-mail the corresponding author,
Chi-Chuan (Emma) Wanga, E-mail the corresponding author
a RTI Health Solutions, 200 Park Offices Drive, Research Triangle Park, NC 277709, United States
b GlaxoSmithKline, 2301 Renaissance Boulevard, King of Prussia, PA 19406, United States
c GlaxoSmithKline, 2406 Neubauer Circle Lindenhurst, IL, United States
http://dx.doi.org/10.1016/j.vaccine.2013.04.081
Highlights
?
We assess influenza-related economic burden among managed care population.
?
Influenza seasons with matched or mismatched circulating and vaccine influenza B strain lineages considered.
?
Medical costs and productivity losses compared between matched and mismatched seasons.
?
Influenza-related direct and indirect costs higher during the mismatched seasons.
Abstract
Objective
To assess and compare direct medical costs (incurred by payers) and indirect productivity losses (incurred by employers) associated with influenza seasons with matched or mismatched circulating and vaccine containing influenza B lineages.
Methods
A retrospective analysis, using two MarketScan databases, for the years 2000?2009. Each influenza season was categorized as matched or mismatched after comparing that season's circulating influenza B lineage and the vaccine influenza B lineage. Patients selected had at least one diagnosis claim for influenza (ICD-9-CM code 487.xx [influenza] or 488.1 [H1N1]) during an influenza season. We assessed the incidence of influenza (overall and influenza B), influenza-related medical utilization and associated costs, and productivity losses for each season.
Results
The four matched seasons had lower average influenza incidence (overall incidence per 100,000 plan members: 509; 95% confidence interval [CI]: 505?512) than the five mismatched seasons (748; 95% CI: 745?751). The mismatched seasons had lower influenza B incidence (average incidence per 100,000 plan members: 126; 95% CI: 125?128) than the matched seasons (165; 95% CI: 163?167). The average, per-patient, total influenza-related medical costs in the mismatched seasons ($300.83; range: $245.38?$371.58) were approximately $61.00 higher than in the matched seasons ($239.43; range: $201.49?$264.01). The mismatched seasons had greater average per-patient, influenza-related productivity-loss costs than the matched seasons (mean: $237.31 vs. $175.10).
Conclusion
CDC data showed that influenza A was the predominant circulating strain during seasons in which the circulating influenza B lineage did not match the vaccine influenza B lineage. This resulted in lower influenza B incidence during the mismatched seasons. However, the average, per-patient, influenza-related direct medical costs and indirect productivity losses were higher during the mismatched seasons. Additional research is required to determine if these higher costs can be attributed to influenza B infections and if the influenza severity varies during mismatched seasons.
http://www.sciencedirect.com/science/article/pii/S0264410X13005549
In Press, Uncorrected Proof ? Note to users
Cover image
Influenza-related health care utilization and productivity losses during seasons with and without a match between the seasonal and vaccine virus B lineage
Sudeep Karvea, Corresponding author contact information, E-mail the corresponding author,
Genevieve Meierb, E-mail the corresponding author,
Keith L. Davisa, E-mail the corresponding author,
Derek A. Misurskic, E-mail the corresponding author,
Chi-Chuan (Emma) Wanga, E-mail the corresponding author
a RTI Health Solutions, 200 Park Offices Drive, Research Triangle Park, NC 277709, United States
b GlaxoSmithKline, 2301 Renaissance Boulevard, King of Prussia, PA 19406, United States
c GlaxoSmithKline, 2406 Neubauer Circle Lindenhurst, IL, United States
http://dx.doi.org/10.1016/j.vaccine.2013.04.081
Highlights
?
We assess influenza-related economic burden among managed care population.
?
Influenza seasons with matched or mismatched circulating and vaccine influenza B strain lineages considered.
?
Medical costs and productivity losses compared between matched and mismatched seasons.
?
Influenza-related direct and indirect costs higher during the mismatched seasons.
Abstract
Objective
To assess and compare direct medical costs (incurred by payers) and indirect productivity losses (incurred by employers) associated with influenza seasons with matched or mismatched circulating and vaccine containing influenza B lineages.
Methods
A retrospective analysis, using two MarketScan databases, for the years 2000?2009. Each influenza season was categorized as matched or mismatched after comparing that season's circulating influenza B lineage and the vaccine influenza B lineage. Patients selected had at least one diagnosis claim for influenza (ICD-9-CM code 487.xx [influenza] or 488.1 [H1N1]) during an influenza season. We assessed the incidence of influenza (overall and influenza B), influenza-related medical utilization and associated costs, and productivity losses for each season.
Results
The four matched seasons had lower average influenza incidence (overall incidence per 100,000 plan members: 509; 95% confidence interval [CI]: 505?512) than the five mismatched seasons (748; 95% CI: 745?751). The mismatched seasons had lower influenza B incidence (average incidence per 100,000 plan members: 126; 95% CI: 125?128) than the matched seasons (165; 95% CI: 163?167). The average, per-patient, total influenza-related medical costs in the mismatched seasons ($300.83; range: $245.38?$371.58) were approximately $61.00 higher than in the matched seasons ($239.43; range: $201.49?$264.01). The mismatched seasons had greater average per-patient, influenza-related productivity-loss costs than the matched seasons (mean: $237.31 vs. $175.10).
Conclusion
CDC data showed that influenza A was the predominant circulating strain during seasons in which the circulating influenza B lineage did not match the vaccine influenza B lineage. This resulted in lower influenza B incidence during the mismatched seasons. However, the average, per-patient, influenza-related direct medical costs and indirect productivity losses were higher during the mismatched seasons. Additional research is required to determine if these higher costs can be attributed to influenza B infections and if the influenza severity varies during mismatched seasons.
http://www.sciencedirect.com/science/article/pii/S0264410X13005549