Rather, you could argue that women with higher education were more willing to be vaccinated against HPV, and they were also having children at a later age. That sounds much more plausible than claiming the vaccine causes infertility.
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Take a look at this graph, published in the
@nytimes about a year ago. Let me clearly state what it shows: women with college degrees get their first baby later than women without a college degree. Source: https://www.nytimes.com/interactive/2018/08/04/upshot/up-birth-age-gap.html …pic.twitter.com/CW4fxrff9m
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If you interview women aged 25-29 to look at pregnancy rates, that means you are deliberately leaving out women who did not have their first baby YET.
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The way the author carefully chose the age group to be limited to young women, together with the significant difference in % college degrees between vaccinated vs unvaccinated women suggests this is a very biased, non-scientific study.
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Also, make sure to read this other very critical review of this paper, written by the amazing Orac aka
@gorskon :https://respectfulinsolence.com/2018/06/13/antivaccine-pseudoscience-about-hpv-vaccination-gayle-delong/ …2 replies 13 retweets 79 likesShow this thread -
In which Orac reveals that the lone author of this paper and the people she lists in the acknowledgments are active anti-vaxxers, who might have some bias in reporting certain results or leaving out other data.
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Also note that the title of the paper states "A lowered probability of pregnancy in females in the USA aged 25–29 who received a human papillomavirus vaccine injection" which is not wrong, but very misleading because it leaves out the most important confounding factor: education.
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What is completely scientifically incorrect is to use this paper to state that the HPV vaccine causes infertility. It does not.
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Update: I wrote a
@PubPeer post with my concerns about this paper and invite others to chime in. https://pubpeer.com/publications/EB6928167002474F1F1A5BB86DDA1A#1 …8 replies 12 retweets 72 likesShow this thread -
Replying to @MicrobiomDigest @nytimes and
We did additional analyses of this data and presented the abstract at SER earlier this summer. Hope to get it under review soon. Our analyses contradict DeLong's.
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Well, her analysis was so bad that even a dumb surgeon could dismante it.
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You're conducting an epidemiological study?
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