| P50 | author | Edward A Belongia | Q59829972 |
| | Michael L Jackson | Q88969073 |
| | Lisa A Jackson | Q97556689 |
| | Roger Baxter | Q105289192 |
| | Allison L. Naleway | Q37377682 |
| | Steven J Jacobsen | Q37384936 |
| | David K. Shay | Q38641565 |
| P2093 | author name string | Onchee Yu | |
| | Jennifer C Nelson | |
| | Komal Narwaney | |
| P2860 | cites work | Evidence of bias in studies of influenza vaccine effectiveness in elderly patients. | Q53062872 |
| | Influenza vaccination and mortality: prospective cohort study of the elderly in a large geographical area | Q80405231 |
| | To rule out confounding, observational studies of influenza vaccine need to include analyses during the "preinfluenza period" | Q80656744 |
| | Benefits of influenza vaccine in US elderly--appreciating issues of confounding bias and precision | Q83161749 |
| | The Vaccine Safety Datalink: a model for monitoring immunization safety | Q27010367 |
| | Influenza vaccine effectiveness in the elderly based on administrative databases: change in immunization habit as a marker for bias | Q28742116 |
| | Impact of influenza vaccination on seasonal mortality in the US elderly population. | Q30350187 |
| | Cross-reactive antibody responses to the 2009 pandemic H1N1 influenza virus. | Q30380575 |
| | Update: influenza activity - United States, August 30, 2009-March 27, 2010, and composition of the 2010-11 influenza vaccine | Q30388140 |
| | Clinical effectiveness of influenza vaccination in Manitoba | Q30467421 |
| | 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 | Q30658983 |
| | Effectiveness of influenza vaccine in the community-dwelling elderly | Q34007308 |
| | Evidence of bias in estimates of influenza vaccine effectiveness in seniors | Q34478438 |
| | Influenza vaccination and reduction in hospitalizations for cardiac disease and stroke among the elderly | Q34532494 |
| | Functional status is a confounder of the association of influenza vaccine and risk of all cause mortality in seniors | Q34563585 |
| | Mortality benefits of influenza vaccination in elderly people: an ongoing controversy | Q34693675 |
| | Confounding by indication in non-experimental evaluation of vaccine effectiveness: the example of prevention of influenza complications | Q35013711 |
| | Influenza vaccination and risk of community-acquired pneumonia in immunocompetent elderly people: a population-based, nested case-control study | Q37233634 |
| | Influenza vaccination and mortality: differentiating vaccine effects from bias | Q37310234 |
| | Why do covariates defined by International Classification of Diseases codes fail to remove confounding in pharmacoepidemiologic studies among seniors? | Q37889240 |
| | Influenza vaccination and all-cause mortality in community-dwelling elderly in Ontario, Canada, a cohort study | Q39821332 |
| | Challenges in evaluating influenza vaccine effectiveness and the mortality benefits controversy | Q39937503 |
| | Influenza vaccination: reduction in hospitalizations and death rates among members of "Maccabi Healthcare Services" during the 2000-2001 influenza season. | Q43210905 |
| P433 | issue | 8 | |
| P407 | language of work or name | English | Q1860 |
| P921 | main subject | pandemic | Q12184 |
| | influenza vaccine | Q383260 |
| | bias | Q742736 |
| P304 | page(s) | 1327-1336 | |
| P577 | publication date | 2013-08-26 | |
| P1433 | published in | American Journal of Epidemiology | Q4744243 |
| P1476 | title | Further evidence for bias in observational studies of influenza vaccine effectiveness: the 2009 influenza A(H1N1) pandemic. | |
| P478 | volume | 178 | |