Evidence of Bias in Estimates of Influenza Vaccine Effectiveness in Seniors.¶
Jackson, L. A., Jackson, M. L., Nelson, J. C., Neuzil, K. M., & Weiss, N. S. (2006). Evidence of Bias in Estimates of Influenza Vaccine Effectiveness in Seniors. International Journal of Epidemiology, 35(2), 337-344.
Cited by¶
1 citation across 1 artifact.
Each citation links to the sentence it supports in the citing article.
Mechanisms¶
- Negative Control Check
- If vaccinated patients still appear to "avoid" pre-season and injury deaths, the apparent survival benefit is confounding, not vaccine efficacy — the control has caught a bias the covariate adjustments missed.
This sourceFinds that the apparent mortality benefit of influenza vaccination among seniors reflected preferential vaccination of healthier people and was not removed by diagnosis-code adjustment.
- If vaccinated patients still appear to "avoid" pre-season and injury deaths, the apparent survival benefit is confounding, not vaccine efficacy — the control has caught a bias the covariate adjustments missed.
Verification¶
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Does it back the claim? Not recorded. The single citation of this work carries no recorded support check.
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