Article Document Academic Article Information Content Entity Continuant Continuant Journal Article Entity Entity Generically Dependent Continuant 2025-05-10T17:22:20 RDF description of Influenza vaccine effectiveness in preventing hospitalizations and deaths in persons 65 years or older in Minnesota, New York, and Oregon: data from 3 health plans - http://repository.healthpartners.com/individual/document-rn18406 Regression Analysis Risk Factors 10.1086/323085 Influenza vaccine effectiveness in preventing hospitalizations and deaths in persons 65 years or older in Minnesota, New York, and Oregon: data from 3 health plans Risk Assessment 13078 <p>This study developed methods and determined the impact of influenza vaccination on elderly persons in 3 large health plans: Kaiser Permanente Northwest, ΏͺΤΖΜεΣύ, and Oxford Health Plans. Data for the 1996-1997 and 1997-1998 seasons were extracted from administrative databases. Subjects were health plan members > or = 65 years old. Comorbid conditions collected from the preceding year were used for risk adjustment with logistic regression. The virus-vaccine match was excellent for year 1 and fair for year 2. Both years, during peak and total periods, vaccination reduced all causes of death and hospitalization for pneumonia and influenza: hospitalizations were reduced by 19%-20% and 18%-24% for years 1 and 2, respectively, and deaths were reduced by 60%-61% and 35%-39% for the same periods. These results show that all elderly persons should be immunized annually for influenza. The methods used in this study are an efficient cost-effective way to study vaccine impact and similar questions.<p> Aged 2022-02-21T22:48:57.408-06:00 document-rn18406 Outpatients/statistics & numerical data Seasons Inpatients/statistics & numerical data *Influenza Vaccines New York Influenza, Human/*epidemiology/mortality/*prevention & control Journal of Infectious Diseases Oregon 20736 Minnesota Age Factors Health Maintenance Organizations/*statistics & numerical data public 6 184 Hospitalization/*statistics & numerical data