Læknaneminn


Læknaneminn - 01.04.1997, Síða 127

Læknaneminn - 01.04.1997, Síða 127
The drug-AIDS hypothesis * sexual men at “highest risk” studied had used nitrites, in addition to various combinations of 12 other recre- ational drugs 104. Because of their complete disregard for the medical consequences of drug use, most AIDS epidemiologists do not even look for a drug-free AIDS case although many acknowledge bewildering drug use (see Tables 4 and. 6). An event at a conference on the role of nitrites in Kaposi’s sarcoma in 1994 illustrates this bias per- fectly. Asked whether there was even one AIDS patient who never used drugs, an investigator of the largest group of male homosexuals ever studied for “HIV dis- ease progression,” the MACS cohort, responded, “I never looked at the data in this way” 96,109. But the MAC study, which is supported by the NIAID with several million dollars annually, has repeatedly record- ed heavy drug use for over 10 years (Table 5) '°3, l04, m. However, until drug-free controls are available, con- clusions that HIV rather than drugs cause AIDS are un-informed speculations. In fact the sheer multiplic- ity of epidemiological studies describing “HlV-disease progression” only in drug users from San Francisco S0, '°2, Vancouver 102,339, Chicago - Los Angeles - Balti- more - Pittsburgh I03, l04, Sydney 102, Milan 93, Amster- dam 102, London 106 can hardly be an accident. It sug- gests that drugs are causing AIDS. To avoid the pitfalls of confounding variables of HIV, matched groups rnust be compared that differ only in one variable 34°. Thus an appropriate statistical analysis of the role of drugs in AIDS would compare two groups of HlV-positives (or two groups of HIV- negatives) matched for all variables but drug use. Based on Feynman’s standards of science, there are three contending explanations why so many AIDS-epi- demiologists have omitted drug-free controls: (a) either they are ignorant of drug toxicity, or (b) they are igno- rant of confounding variables in epidemiological stud- ies, or (c) there are no drug-free AIDS cases, because drugs cause AIDS. 7.6. Confounding “confounding viariables”. The Nature commentary also demonstrates the “proper methods” used by HIV researchers to eliminate “con- founding variables” such as drug use from the non-con- founding variable HIV 80. In view of the “fact” that homosexual men who were “heavy” nitrite users had twice as much Kaposi’s sarco- ma as those who were “light” users, the authors argued as follows: “This crude association is apparently the basis for Duesberg’s hypothesis. Further analysis of the data reveals a similar association between drug use and HIV positivity, and when controlled for HIV serosta- tus, there is no overall effect of drug use on AIDS. A similar effect, a marginal association that drops after controlling for HIV serostatus, is seen in cases which end in Kaposi’s sarcoma. Thus when proper methods are used to assess the role of confounding variables, there is no evidence of a drug effect” 80. With this rea- soning the article proudly rejected the drug hypothesis with, “such claims have no basis in fact.” The anti- drug bias of Nature is so pervasive that the editor open- ly censored 341 all critics pointing out confounding by drug use 1H->15.222,342_ However, The Lancet allowed two critical letters 47,223. Called to task on the possibility of confounding two years later in Science, the authors simply restated their conclusion without lifting the secret of their “proper methods”: “The standard statistical methods that we used to differentiate cause from confounding factors showed, in this case, that HIV was the cause and that drug-use association was spurious” 337. In short, Nature has refuted the drug hypothesis by first commissioning a commentary that relied on AIDS patients who had all (!) used a multiplicity of recre- ational drugs in addition to AZT, and then by openly censoring all objections to its methodological flaws and unscientific manipulations - a bewildering achieve- ment coming from the world’s oldest science journal. 7.7. Grouping drug-using with non-drug using HIV- positives. This manipulation credits the diseases of drug users to non-drug users within the same study group of HlV-positive people. For example, HlV-positive babies who either shared recreational drugs with their moth- ers or received AZT from their doctors are grouped with babies who neither received drugs from their mothers nor AZT, and the diseases of the HlV-positive “group” as a whole are then compared to those of HIV- free babies 205’314'322 (see 6.9.). But mothers of HlV-free babies typically have not used cocaine, nor are HIV- free babies ever treated with AZT 26. Likewise, the mortality of groups of HlV-positive hemophiliacs who on average have received many more immunosuppressive transfusions than HlV-negatives LÆKNANEMINN 125 1. tbl. 1997, 50. árg.
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