I had Hodgkins Lymphoma (many years ago now when I was young) and we've been treating that for so long that the earliest curative treatments pre-date scientific medicine. So the trail dries up - we have no proof that the cures are better than nothing except, you know, circumstantially it sure does seem like the freaks who reject treatment just drop dead and I didn't so...
They're still doing research, as with the HPV vaccines they do A v B trials as a placebo would be unethical - it's basically a death sentence. I actually wasn't selected for a trial comparing Stanford V (a new potential therapy from Stanford) against the current gold standard (which I was getting) ABVD. That was a long time ago, but I think the gold standard today is still ABVD.
Or you can eliminate it by vaccination and avoid the suffering and risk.
Similarly, while there may be ethical concerns with using a placebo, statistics and biology do not care about ethical concerns. There are real results which come from medical treatments, and ignoring them does not make them go away; it just makes us ignorant of them.
> None of the deaths were considered by the study investigators to be vaccine-related. The five deaths in the 9vHPV vaccine group were the result of suicide (15 days after vaccination dose 1), acute lymphocytic leukemia (diagnosed 27 days after vaccination dose 3), traffic accident (226 days after vaccination dose 3), hypovolemic shock and septic shock (531 days after vaccination dose 3), and sudden death (678 days after vaccination dose 3). The five deaths in the qHPV vaccine group were the result of accidental death (airplane accident 7 days after vaccination dose 3), spinal cord injury (141 days after vaccination dose 3), gastric adenocarcinoma (diagnosed 403 days after vaccination dose 3), cervical spinal cord injury (811 days after vaccination dose 3), and cerebral hemorrhage (1114 days after vaccination dose 3).
For example, you might be tempted to dismiss deaths due to traffic accidents as being obviously unrelated to a drug. However, if there were a lot of them, it would be prudent to check for potential effects on reaction times or judgement.
The same bullshit reason they used to not do a controlled trial for COVID-19 vaccines. That's pseudo science.
I can't prove the efficacy and the safety so let me find a reason to remove any form of control to make more money and avoid class action lawsuits. The heath agencies have been completed hijacked.
This reason can also be used to cover up the side effects of the vaccine/drug. Complete BS.
Anti-vaxxers also sometimes object to studies like these on the basis that no placebo arm was included, and thus the true safety profile of the vaccine cannot be ascertained, but this can be flatly rejected because, as the study authors point out, '[s]ince HPV vaccination is widely recommended and has been shown to prevent HPV disease related to oncogenic HPV types, the use of a placebo was not considered to be acceptable for ethical reasons.'