Folks, the Pro Vaxxers are LYING again. I understand what Healthy User Bias is and there are many papers that
say the Vaccine Safety Tests are INVALID because of Healthy User Bias which HIDES the Harm of Vaccines.
Here are excerpts from a few Studies that discuss how Healthy User Bias INVALIDATES Non-Randomized studies:
Confounding in Studies of Adverse Reactions to Vaccines (American Journal of Epidemiology)
Studies that fail to control adequately for such confounding factors are likely to underestimate the risks of adverse events attributable to vaccination… Confounding of this sort is a general problem for studies of adverse reactions to prophylactic interventions, as they may be withheld from some individuals precisely because they are already at high risk of the adverse event.
Review of the literature on SIDS, encephalopathies, and DPT suggests that a large number of factors are associated with both a tendency to avoid or delay vaccination and an increased risk of SIDS and other serious neurologic events. That failure to control for such factors may lead to spurious negative associations between vaccination and adverse events is evident in several published investigations. Examination of the logic underlying this relation reveals that failure to control for such factors in analyses may mask true associations between vaccinations and certain adverse outcomes under certain conditions
The Introduction of Diphtheria-Tetanus-Pertussis and Oral Polio Vaccine Among Young Infants in an Urban African Community: A Natural Experiment (Morgensen)
The Mogensen et al. study was specifically designed to avoid HUB (Healthy User Bias). It says the following about healthy user bias in prior studies of DTP and mortality:
“…the “unvaccinated” children in these studies have usually been frail children too sick or malnourished to get vaccinated, and the studies may therefore have underestimated the negative effect of DTP.”
NOTE: “these studies” = prior studies of DTP and mortality (or SIDS)
DTP Vaccine Increases Mortality 5-Fold, In Study Without Healthy User Bias
The Healthy User Effect: Ubiquitous and Uncontrollable
S. R. Majumdar, MD MPH FRCPC FACP
Professor of Medicine, Endowed Chair in Patient Health Management,
The healthy user effect probably cannot be controlled without RANDOMIZED trials
1. Flu vaccine has small to absent clinical benefit in randomized trials
2. Stable or increasing pneumonia and death rates in the elderly in the face of
400% increases in vaccine coverage
3. But flu vaccine has a huge benefit in every cohort ever studied and published
Translation: In studies, Flu Vaccine showed a “HUGE Benefit” but in RANDOMIZED Studies, the benefit was ZERO.
Even though Flu Vaccines has increased 400% – the Rate of Death and Pneumonia has been stable or INCREASED!
NO Benefit from Flu Vaccine (Except to Vaccine Industry) and maybe causes INCREASE in Pneumonia and Death!