Statement of Ltc. Robert R. Redfield
Drs. Vahey and McCarthy but the Acting Department Chief in my absence was not asked to participate which meant that no RV21 Principal Investigator was present to discuss the RV21 data. I have agreed with the statistical analysis performed by Dr. McCarthy and have used this data in all subsequent presentations. Also during this week, Dr. Birx was requested by Dr. Vahey to provide the 15 patients presented at Amsterdam. Dr. Birz was unable to locate the information and suggested they await my return to which Dr. Vahey agreed. I returned unexpectedly on 27 August to find that a meeting was scheduled the' following day to go over the data presented in Amsterdam. On 28 August, I reviewed in detail my analysis of the 15 patients pre ented at Amsterdam with COL Burke after which he *.rfVie Irat he had a meeting that afternoon with Drs. Vahey, Brundage and McCarthy. The purpose of the meeting was to assess the disparity between analyses presented by asme and others. Again, no Principal Investigator on RV21 was present at this meeting. Dr. McCarthy presented a report (dated 28 August and addressed to Dr. Vahey and not to- my earlier request) of his analysis of 15 patients but they were not the same 15 I presented at Amsterdam. He concluded that while there was no statistical evidence of significant effect of intervention, the findings did not exclude the possibility that there were significant effects of therapy (overall or in subgroups of treated patients) that were obscured in his analysis by such factors as small sample size, variability of RNA/DNA measurements, effects of uncontrolled confounding factors, e.g., age, CD4+). This report was leaked to the press. Two days before (29 August) the Chantilly meeting began I received a MFR from COL Burke of his meeting on 28 August. It stated four factors attributing to the disparity between the analysis of 26 patients and what I reported in Amsterdam: a.) the use of viral load divided by CD4 cells, since the natural history group was less than perfectly matched and had more patients with greater CD4 cell count decreases which artificially raised the reported differences over time, was suboptimal and led to misinterpretation; b.) for unexplained reasons, patients enrolled and vaccinated earlier tended to have falling burdens, while those vaccinated later tended to have increasing burdens; the first 7 vaccinees looked best, the first 15 (including the 7) looked next best whereas data from the 26 showed no difference from the natural history cohort over time; c.) the use of a half-log rise or fall was arbitrary and post hoc grouping led to marginal but unreal significance; and d.) the second table was organized so that patients who showed no change in viral burden being grouped with those whose viral burden decreased gave the impression to casual observers that a large number had falling viral burdens. I responded to this KYR verbally at several a tings in the month of September and in writing 16 October wit a handwritten apology for misunderstanding that a written response was requir L In this response I stated: a.) the decision to compare preliminary RV21 data to a natural history cohort was discussed at several Department meetings, and the decision, while liable to questioning
About this Item
- Title
- Statement of Ltc. Robert R. Redfield
- Author
- Redfield, Robert
- Canvas
- Page 7
- Publication
- 1992-11-17
- Subject terms
- testimonies
- Series/Folder Title
- Government Response and Policy > Law > gp160 trials and controversy > Investigation of U.S. Department of Defense AIDS researchers
- Item type:
- testimonies
Technical Details
- Collection
- Jon Cohen AIDS Research Collection
- Link to this Item
-
https://name.umdl.umich.edu/5571095.0466.007
- Link to this scan
-
https://quod.lib.umich.edu/c/cohenaids/5571095.0466.007/7
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Related Links
IIIF
- Manifest
-
https://quod.lib.umich.edu/cgi/t/text/api/manifest/cohenaids:5571095.0466.007
Cite this Item
- Full citation
-
"Statement of Ltc. Robert R. Redfield." In the digital collection Jon Cohen AIDS Research Collection. https://name.umdl.umich.edu/5571095.0466.007. University of Michigan Library Digital Collections. Accessed June 12, 2025.