Remember that famous Lancet Iraq Casualties Study that claimed roughly 650,000 “excess deaths” occurred in Iraq as a result of the U.S.-led invasion in 2003, released just before the Presidential election in 2004?

It was junk.  Nondisclosure Cited in Iraq Casualties Study

In a highly unusual rebuke, the American Association for Public Opinion Research today said the author of a widely debated survey on “excess deaths” in Iraq had violated its code of professional ethics by refusing to disclose details of his work.

…Losch said Burnham gave some partial answers but “explicitly refused to provide complete information about the basic elements of his research.”

The larger issue is scientific credibility:

In AAPOR’s statement, its president, Richard A. Kulka, said: “When researchers draw important conclusions and make public statements and arguments based on survey research, then subsequently refuse to answer even basic questions about how their research was conducted, this violates the fundamental standards of science, seriously undermines open
public debate on critical issues, and undermines the credibility of all survey and public opinion research.”

You don’t say.  Well, knock me down with a hockey stick.

H/T Ace