Wednesday, November 18, 2009

No Fair Peeking? More Questions about Early Stopping of Trials

In the previous post I mentioned the recent findings about ezetimibe, which happened to be part of the study called ARBITER 6. As one evidence-based blogger, Dr. David Rind has noted--
http://www.evidenceinmedicine.org/2009/11/arbiter-6-and-combining-therapies-with-statins.html
--the results as published could be consistent with three different possibilities:
  1. Ezetimibe adds nothing to heart disease prevention; niacin is helpful
  2. Niacin is slightly helpful or neutral and ezetimibe actually worsens arterial plaque
  3. All the results of the study are due to chance alone
Option #3 becomes meaningful when we note that the actual hard outcomes in the study were 2 bad events in the niacin arm and 9 bad events in the ezetimibe arm. That is, move just a couple of bad events to a different column and the whole outcome changes.

If the study had been continued longer and more hard outcomes accumulated, we'd know a good deal more about which option made the most sense. (And, of course, knowing which means a lot in terms of what treatments docs should recommend to patients.) So it was therefore very interesting that the study was stopped early. The authors state that this was due to a predetermined efficacy endpoint having been reached:
http://content.nejm.org/cgi/content/full/NEJMoa0907569

In theory, a data safety and monitoring board is supposed to be completely independent of the investigators and the commercial sponsor of a study. In actuality, in the past (as I have noted in other posts a while back), some decisions of the "independent" boards have been eerily like the decisions that a commercial sponsor would have made had the goal been to maximize the marketing advantage of the study outcomes. In this case a quick stoppage of the study may have favored the extended-release niacin product being promoted by sponsor Abbott Labs. And a stoppage due to efficacy is stranger than stoppage due to safety concerns, especially when the main outcome measure--thickening of the wall of an artery--is a surrogate marker rather than an actual disease outcome, as Dr. Rind notes.

I remain ignorant of the exact means by which a data monitoring board might be secretly influenced by commercial marketing pressures. But if a further hint is needed that somebody just may be sneaking a peek where they are not supposed to, ARBITER 6 may provide the hint.

(Hat tip to Marilyn Mann for Dr. Rind's blog.)

Monday, November 16, 2009

More Bad News on Ezetimibe--So Why Do We Still Take It?

In the past I did several posts on the ENHANCE trial (like, http://brodyhooked.blogspot.com/2008/01/now-that-weve-been-enhanced-whats.html) that showed that ezetimibe (Zetia, Vytorin) was a flop at reducing cholesterol containing plaque within arteries.

The news this week is the New England Journal study--http://content.nejm.org/cgi/content/full/NEJMoa0907569
--in which ironically ezetimibe (Zetia) was stabbed in the back by a competing drug company, Abbott, promoting its own drug, extended-release niacin. A head-to-head trial indicated not only that niacin was better at reducing arterial plaque, but that ezetimibe actually caused plaque to increase at the same time as it was making your cholesterol lab values look better (the same as in the ENHANCE study).

The popular media is full of dire warnings from docs saying, "Just because this trial ended up badly, patients should never stop taking the medicines their physicians prescribed for them." This is despite the fact that no harm has ever been shown to come from abruptly stopping a statin or ezetimibe (which are, after all, designed to prevent fututre events and not to treat an existing disease) that I am aware of; and also despite the overriding fact that ezetimibe was approved for sale in the US despite a complete lack of evidence that it prevented any cardiac events, and based solely on the fact that it lowered cholesterol (LDL) levels by a different mechanism than the statins.

So the various lists are humming with people asking--when ezetimibe was never shown to be useful in the first place, and now has been shown in at least two studies perhaps even to be harmful as well as useless, why are people still taking it and prescribing it?

My own vote for this is the Tyranny of the Numbers.

Over the past couple of decades, Americans (physicians and the public alike) have fallen in love with the idea that you can do a blood test and get a number and it tells you how healthy you are--your cholesterol level, or now the refined version, your LDL. I served on two search committees during my previous academic job for Dean of the medical school, and we asked candidates to tell us how their general health was, and they replied, in a number of cases, without us having asked for that number, by telling us what their cholesterol levels were. As if they could reduce their entire health status to a single number. And these people wanted to be Dean of a medical school for Chrissake.

If you are totally in love with the idea that you can measure a magic number and it tells you that you are healthy, then you are equally in love with any medicine that will make that number better--regardless of what that medicine actually does inside your body. Hence Zetia and Vytorin.

I mention that hunch, in the context of this blog, simply to make the point that drug companies are smart when they market. They know that as powerful a juggernaut as their marketing machine is, they generally cannot make the proverbial silk purse out of the sow's ear (which is what we used to try to do before we decided to put lipstick on the pig). Cliches aside, you cannot make people take a drug when your message arrives completely out of left field and people have no conceptual hook on which to hang it. But if you can tie your message to something people already believe in and cherish, then you can put lipstick on the ezetimibe pig and everyone will invite it to the prom. Almost all effective drug company marketing consists of this clever hitching of the drug company message with some strain of U.S. popular culture that pre-existed the message (even if in an earlier life, drug company marketing may have helped to birth that popular culture phenomenon).

Saturday, November 14, 2009

More on Suppression of Unfavorable Trial Results--and a Warning Note

If I had not gotten off onto the COI tangent in recent posts, the big news of the week would probably have been the publication in the New England Journal of the paper by Vedula et al. on selective outcome reporting for gabapentin.

The quick once-over is that in order to reveal how research sponsored by pharmaceutical companies sometimes undergoes selective publication or suppression of data, to favor marketing the company's drug, you need both the publication itself (the "after") and some snapshot of the actual research data in its more-closely-raw state (the "before"). (Or, to show that the data was entirely suppressed, you need the "before" that is not followed by any "after," despite enough time having elapsed to allow for publication.) One way to get the "before" is to get the trials submitted to the FDA as part of successful new drug applications. (See paper by Rising et al. mentioned below.) Another way is to get hold of confidential in-house company documents that are released as part of the discovery process in a lawsuit.

The latter method was used in this instance. Pfizer, after acquiring Parke-Davis, was stuck with lawsuits against the latter company around its marketing of gabapentin (Neurontin), especially its off-label uses for which legally the company was not supposed to market at all. The major of-label diagnoses for which gabapentin was commonly recommended include various pain syndromes and bipolar disorder; its major labelled use is as an anti-epilepsy drug. Vedula and colleagues (two of whom worked with plaintiff's lawyers in the relevant suits) obtained reports of company sponsored trials investigating the off-label uses and compared those internal reports with published results for those trials that were eventually published.

What they discovered will be no news to anyone here--more evidence of the routine manipulation and suppression of data to make the favored drug look better. The authors particularly looked at the primary outcomes reported in the eventual publication vs. in the original trial results. In no less than 2/3 of the published trials, there had been a change in the primary outcomes. Secondary outcomes that were statistically significant were substituted for primary outcomes that were not; or else new primary outcomes appeared out of nowhere in the process of publication. (Without going into a lot of detail, this basically is not kosher and increases greatly the likelihood that you'll report as a true scientific outcome something that actually occurred solely by chance.) The trials that were not published were primarily those that showed gabapentin in an unfavorable light.

Lest anyone think that this was a fluke due to the company's goal of off-label marketing, Vedula et al. cite the earlier paper by Rising et al., which used FDA documents to cover a much wider class of drugs, and showed very similar results.

Now for the warning note. Vedula et al. very appropriately balance their claims of undue commercial bias by admitting the presence of apparently non-commercial bias. Specifically, they cite the paper by Chan et al. looking at 48 trials funded by the Canadian Institutes of Health Research, and showed that in 40 percent of those trials there were differences between primary outcomes as reported in the actual trial and in the final publication. The bottom line seems to be that trial registries are urgently needed for both commercial and non-commercial research, even though the quantitative problems in commercial research appear to be more substantial.

Vedula SS, Bero L, Scherer RW, Dickersin K. Outcome reporting in industry-sponsored trials of gabapentin for off-label use. New England Journal of Medicine 361:1963-71, Nov. 12, 2009.

Rising K, Bacchetti P, Bero L. Reporting bias in drug trials submitted to the Food and Drug Administration: review of publication and presentation. PLoS Medicine 5(11):e217, 2008; http://www.plosmedicine.org/article/info%3Adoi%2F10.1371%2Fjournal.pmed.0050217

Chan A-W, Krleza-Jeric K, Schmid I, Altman DG. Outome reporting bias in randomized trials funded by the Canadian Institutes of Health Research. CMAJ 171: 735-40, 2004; http://www.cmaj.ca/cgi/content/full/171/7/735

COI: Further Response from Stell

Folks, I trust this will be the last post on this particular exchange; any further discussion will be relegated to comments to posts. However, I think the topic is well worth the headlines because the definition of "conflict of interest" is central to our discussion--if we do not know what COI is, then much of the rest of our ethical concerns fall down. (Hence the shrewdness of a counterstrategy that attacks the definition directly.)

Lance Stell has kindly replied to my most recent post (one down) as follows:

...here’s how I summarize your [Brody's] response.

· Langbein is sensible, but is not obviously relevant to the question at hand –
o Comment: How could Langbein not be obviously and directly relevant where the underlying ethical issue is fiduciary trustworthiness?.
· Langbein really provides more support for your (prohibitionist) view than my view (a management/disclosure view).
o Comment: Huh?
o With regard to overlapping relationships, Langbein makes “management/disclosure” the default. He is not a prohibitionist.
o Langbein does allow that some relationships are so toxic that prohibition is the right prescription. But even in proven toxic circumstances, he argues for a “reasonableness, best-interest” defense.
o You probably assume that your book provides ample empirical proof of severe toxicity.
o But no. Influence, even when established, is not thereby “undue-influence,” let alone toxic influence.
o There is ample evidence that doctors chronically fail to intensify therapy as they should (esp. in DM and HTN).
o Doctors’ clinical inertia is a chronic problem. Good quality CME may offset it somewhat.
o What may be said at CME events is tightly scripted, especially where drugs are concerned.
o Doctors have been criminally indicted for off-label use promotion. Free-speech anyone?
o At industry-sponsored CME, the corporation’s legal department screens the Power Points for staying well-within the FDA’s PI.
o The issue w/ CME is educational quality, not provenance.
o IMHO, Pharmascolds tend to have a provenance-fixation, rather than a quality-fixation.
o Huddle and Stossel have completely shredded the pharmascold COI research as having somehow proven “toxicity-with-patient-harm-resulting.”
o Even Wazana, a lead pharmascold, candidly admits that the COI research that she has reviewed hasn’t even examined patient outcome.
· As a card-carrying pharmascold you suggest (and by your book title imply) that doctors who consult for industry or attend sponsored CME should bear a “black box” warning. “Patients beware, your doctor maybe have acquired drug-company dependency.”
· This is an ad hominem (circumstantial), isn’t it?
· Finally, your working diagnosis for me: I naively “inhaled” at ACRE’s founding in July and am now either early-onset addicted or at-risk for – drug-company dependency myself.
o Comment: I was invited to speak at the ACRE meeting. No one paid my way. I attended on my own dime.

***
OK, that's Lance. Just a few comments in reply.

Prof. Stell appears to be astounded, first, that I sugggested that Langbein may not even be relevant to the Pharma issues; and second, he is even more astounded that I suggest that if Langbein is relevant, he actually defends the pharmascold view more than the views of pharmapologists like ACRE (which whom Stell has now thrown in his lot completely I gather).

The reason why Langbein is not (very) relevant is simple. His article is about trust law and the sole-interest rule. The criticism he lodges against that rule is quite dependent upon the detailed history of trusts and trust law that he provides in the article. So yes, it is about a fiduciary relationship, but one that has very different features (and a completely different set of empirical facts) from the impact of Pharma on the physician-patient fiduciary relationship.

The reason why despite that, Langbein offers more comfort to pharmascolds is more complex and I tried to give the detailed case in my previous post. But by way of a quick summation, the case is basically this. Stell and his ACRE colleagues realize that the only way to ward off the attack of the pharmascolds is to redefine 'conflict of interest' in such a way that it either disappears as a factor, or else that it becomes so widespread and omnipresent that one cannot distinguish financial COI with drug companies from a host of other COI's that we find acceptable in everyday life (which is just another way of making it disappear as an ethically relevant feature of the landscape). By contrast, Langbein offers no redefinition of COI and sees no need to do so. The pharmapologists see no ethical problem where the pharmascolds see a ton of them. Langbein sees exactly the same ethical problems as do his opponents who favor retaining the sole interest rule in trust law; he simply proposes a different solution.

Now, here is where we pharmascolds may have been sloppy in our arguments so as to have misled folks like Stell to think he has scored points against us. Stell seems puzzled that I would defend Langbein as reasonable, since my position against the pharmapologists is that most COIs between medicine and Pharma should be avoided, not accepted and "managed"; whereas Langbein obviously calls for managing COI in the area of trust law. (As a sidebar let me say that a "management strategy" makes more sense in trust law than in medicine/Pharma because the trustee is more directly under judicial control and review.) However, the argument I make in HOOKED has two parts: 1) a definition of COI that explains why it is a serious ethical problem that implicates patient trust; and 2) a further argument that most COI in medicine should be divested and not merely managed. If I were trying to claim that #2 followed directly from my definition, then indeed I would be open to all the criticisms that Stell throws in my direction.

It is important that we not expect the definition of COI to do more work for us than it can. Let's go back to Erde's fundamental analysis as I review in HOOKED. Erde insists that a statement that a COI exists is not a statement that a person has necessarily done anything ethically wrong. The person has, rather, placed herself in a position where she is at risk of doing things that are ethically wrong. The actual wrongdoing is a rebuttable presumption (which seems to be exactly what Langbein is saying).

Now suppose that in addition to the fact that a COI is present, we have some additional facts. First, significant patient harms have actually occurred as a result of those sorts of COIs in the recent past. (ACRE and Stell apparently deny that this is true in the Pharma case, and that is what would lead me to ask what he had been inhaling at their meeting--I made no suggestion whatever as to financial ties.) Second, the protections that have been offered to "manage" these COIs (such as disclosure) have been ignored or widely abused. Third, the COI is not a part of any arrangement that is necessary for medical practice or research to be properly conducted. Now, if all these things are true, it becomes more reasonable to blame the individual for entering into the arrangements that constitute the COI (such as signing up for a company speaker's bureau). But notice that the blame arises from the extra facts. It does not arise from the mere definition of COI. The charge of wrongdoing implicit in the label 'COI' remains a rebuttable presumption, by definition.

Friday, November 13, 2009

COI: My Reply to Stell

In the last post I turned the microphone over to my esteemed colleague, philosopher and bioethicist Lance Stell. He apparently accepted the definition of 'conflict of interest' attributed to him in the editorial by Michael Weber that was the subject of the post immediately preceding. He then proceeded to offer a further defense of that definition of COI, and cited as his inspiration for that definition the work of a Yale law professor, John Langbein.

I have now spent a pleasant couple of hours reading the 63-page article by Langbein that Prof. Stell refers us to. My conclusion is that it makes excellent sense, is grounded in what appears to be a thoughtful historical analysis, and I have no problem at all saying that he makes a good case for the conclusions that he argues for. (Whether he is actually right or not hinges on matters of trust law about which I am wholly ignorant, so I must withhold judgment. All I can address is the internal logic of his arguments.)

It also seems clear to me that Prof. Langbein's article has nothing at all to do with the debate over physicians and COI in relation to Pharma--or, if it does, that it supports conclusions opposite to those drawn by Stell and ACRE.

What Prof. Langbein sets out to show is that a principle of the law of trusts, the sole interest principle, is outmoded and should be replaced. According to this principle, if you are a trustee, you are assumed to be disloyal to the person you are the fiduciary for, if you enter into any deals that benefit you in any way--even if the result for the trust is a net benefit from the deal.

Prof. L. notes that the law has already been modified to grant him a good deal of what he wants--because the law now recognizes a bunch of exceptions to the sole-interest principle. That is, the law recognizes now that there are many ways in which it might be in the mutual interests of both trustee and fiduciary to carry out certain business arrangements. All Prof. L asks for is that these exceptions be made the new default principle.

Thus far it is not at all clear why Prof. Stell should imagine that this article is at all informative about COI in medicine/Pharma. The key line he quotes is, "The very term 'conflict' is an epithet that prejudices our understanding..." So I read Prof. L's article with the question in mind--does what he say here undermine or support the view of COI that I , as a card-carrying "pharmascold," propose is best? My conclusion is that Prof. L. says a lot more in support of my preferred view of COI.

Prof. L. wishes to allow transactions in which a COI exists but in which the interests of all parties are nevertheless best served by allowing what the sole-interest rule would prohibit. This is completely in keeping with most COI policies in academic medical centers. An example commonly discussed is the physician who owns a business interest in some new discovery. The ordinary rules would preclude that doc from running a research trial to test that discovery. But the discovery may be such that the only person on earth with sufficient knowledge of the new discovery, to be able competently to carry out the necessary research, is the doc who discovered it in the first place. The policies then commonly state that the doc may serve as the principal investigator for the study, but that he must accept additional oversight to be sure that he is not abusing his privilege as PI. So far nothing here to disagree with Prof. L's take on the matter. Prof. L at several places in his article calls for further regulation to prevent possible abuses.

One point that Prof. L. makes, that would at first glance seem to recommend his views to Prof. Stell and to ACRE, is the ubiquity of COI. You cannot get rid of COI because it's everywhere you look, he says. But then see where he takes this point. First, he distinguishes unavoidable and avoidable COI and agrees that it may generally be sound policy to prohibit the avoidable COI even if you end up having to tolerate the unavoidable. We pharmascolds, of course, argue that most of the COI we object to is avoidable. Docs can buy their own dinners and pay for their own CME. Academic docs who want to promote new discoveries can communicate freely with industry, but need not become paid consultants and speakers on behalf of industry--or, if they do want to do this, they can work part-time as salaried industry employees, and only part-time at the academic medical center. Famous academic "thought leaders" can actually write their own articles--or, if they want hired ghostwriters to do it for them, admit that and make the real writer the first author.

Further, while demanding changes in the sole-interest principle, Prof. L. nevertheless acknowledges the core reasons why the principle exists. For example (p. 953), he criticizes the principle, "What the sole interest rule does in such a case is to identify some conceivable but conjectural evil and then conclusively presume that this farfetched plot actually transpired, by refusing to let the putative evildoer prove that no such thing happened." Sounds pretty uncompromising. But he follows quickly with, "I do not mean to say that the trust tradition is wrong in being alert to the possibility of abuse [in the sorts of cases being referred to]." Now, this is precisely where we pharmascolds and ACRE/Stell seem to part company. Because they think that COI is sometimes applied in too sweeping a fashion, or because they think COI is ubiquitous and unavoidable, they do conclude that it is all a lot of hogwash, and that Pharma money and gifts and inducements create no ethical problem of any sort whatsoever, except in the fevered imagination of people like me. But if they conclude that, I would say, they cannot turn to Langbein for support.

Another point at which Prof. L. seems to offer much more support for my own position than for Stell and ACRE is where we call upon heightened standards of professionalism in medicine to get docs to refuse to accept Pharma freebies and bribes/handouts. Prof. L. includes in his historic survey (947-48) that one of the changes that has occurred since the sole interest rule made sense, is that the business of being a trustee has become much more professionalized. He mentions as his key example enhanced recordkeeping, driven by the "process values" that charaterize "good trust administration." With these improved records, if the trustee actually cheated the trust, you an always go back into the records and find out when and where this happened; and knowing this provides a strong incentive to the trustee not to abuse his power. Gosh--sounds to me as if Prof. L. is invoking professional standards as a defense against abuse and misconduct.

Final matter--I take Prof. L. to be making a claim that could be characterized as an account of successive pendulum swings. There was a time in history, he says, when the sole interest rule made good sense. Then a bunch of things changed, but the rule remained petrified. Nonetheless the pendulum has swung back toward the middle because more and more exceptions to the rule have been recognized. Prof. L. now calls for the final pendulum correction by replacing the rule with a more up-to-date principle.

Again we see why this analogy is superficially attractive to ACRE adherents. But let's ask--over the past several decades, which way has the Pharma pendulum actually swung? ACRE claims that at least in the last few years, the pendulum has swung wildly in the direction of discouraging financial exchanges between docs and Pharma, even when these exchanges might make patients better off (as they believe nearly always occurs). We pharmascolds on the other hand believe that the past 30-40 years have seen a huge pendulum swing in the direction of normalizing and accepting all sorts of blatant abuses and unprofessional behavior on the part of docs, and the reforms of the last few years have only just begun to edge the pendulum a few notches back toward the center-- though we still have an incredibly long way to go. I leave it to the reader to fill in your preferred account of which "pendulum" narrative seems more plausible to you.

So for all these reasons I believe that a fair-minded reading of Prof. Langbein's paper, far from undermining my own preferred definition of COI, would actually support it. As to what Prof. Stell said in the post that I reprinted from his e-mail to me, the only point to which I would call attention is his remark, "Some commentators quote GB Shaw as holy scripture [presumably when he said that it makes no policy sense to pay a surgeon or cutting off your leg unless you want surgeons to cut off a lot of legs]. And if so, buy into his socialist biases, whether self-consciously or not." C'mon, Lance--you cannot mean that in order to decide that fee-for-service payments to docs constitute a form of COI that incentivizes overtreatment, you have to be a socialist? Whatever those ACRE people were smoking at their July meeting, you should never have inhaled.

Langbein JH. Questioning the trust law duty of loyalty: sole interest or best interest? Yale Law Journal 114:929-990, 2005.

COI: Reply from Lance Stell

Since I posted the commentary just downhill from this post, I received a quick response from my colleague Lance Stell. I am pleased to quote here the meat of his reply, toward the goal of promoting scholarly inquiry and discussion.

***

You acknowledge drawing inspiration for thinking analytically about COI from Erde. I draw mine from John Langbein, a trust law scholar.

Langbein writes, “The very term “conflict” is an epithet that prejudices our understanding that some overlaps of interest are either harmless or positively value enhancing for all affected interests.” [ “Questioning the Trust Law Duty of Loyalty: Sole Interest or Best Interest?” 114 Yale L J 929 (2005)].

If you’re not familiar with this article or Langbein, I highly recommend both.

In my view, Langbein is correct. COI, as used in pharmascold-commentary on the physicians’ relationships with industry, is an epithet.

How so? “Harmless” or “value-enhancing conflicts”, if not oxymoronic for pharmascolds (Tom Stossel’s term), languish as empty ethical categories. If populated at all, it’s token “tip of the hat.”

Traditionally, physicians’ relationships with a patient have involved that of a diagnostician, a therapist and a source of billing. The physician is permitted to offer treatment for conditions he diagnoses and to bill or somehow be reimbursed for doing these. This manifests acceptance of Plato’s opportunity-cost axiom – “no one takes on the troubles of strangers, to straighten them out, but everyone expects pay for that.”

The relationships of diagnostician, therapist and biller for services overlap, to use Langbein’s term. The associated incentives involved are very complex. Some incentives incline to advantage taking (medicalization, sometimes to the point of quackery, over-utilization in FFS or under-utilization in capitated settings, over-billing/up-coding, and the encouragement of valetudinarianism with a resulting loss of patient autonomy).

Reputational incentives and disciplinary incentives (because of physicians’ relationships w/ colleagues, licensing boards, pharmacy benefits managers, credentials committees, the plaintiff’s bar, third-party insurers, and the general public) work in off-setting directions.

On the whole, we all seem quite confident that allowing physicians to offer treatment for what they diagnose encourages dutifulness (w/ allowances for referral, but w/ scorn for fee-splitting, a practice common in Japan). Yet Westerners are vexed over the third relationship, that of reimbursement. Some commentators quote GB Shaw as holy scripture. And if so, buy his socialist biases, whether self-consciously or not. GB Shaw is not lionized among intellectuals in Japan, where specialists pay up to $2500 for a referral.

More reason to suppose that COI is an epithet.
To say of a professional, “Over the past year, Dr. S has substantially increased her conflicts,” implies presumptively (& especially for pharmascolds) that she now has a professionalism-based reason to “eliminate, reduce, minimize and/or to disclose” all of them.

There is additionally the blind spot in the jihad against physicians’ relationships with industry that financial relationships are more ethically toxic than non-financial sources of bias. Levitsky is one of the few commentators to acknowledge that non-financial relationships may be more toxic ethically than financial ones.

In my view, the COI-label is not only an “epithet” (Langbein’s characterization) it has all the properties characteristic of a “framing bias” (a point I made in my OPC supporting Tom Huddle’s article in AJOB). I’ve agreed to write an article further elaborating this claim.

Best regards, Lance

Lance K Stell, PhD, FACFE
Thatcher Professor of Philosophy
Director, Medical Humanities Program
Davidson College
PO Box 7135
Davidson, NC 28036
Clinical Professor of Medicine
UNC-Chapel Hill School of Medicine
Medical Ethicist
Department of Internal Medicine
Carolinas Medical Center
PO Box 32861
Charlotte, NC 28232

Thursday, November 12, 2009

COI: Define It Narrowly Enough and It Goes Away

Thanks to a couple of friends for alerting me to Dr. Michael A. Weber's editorial in the Journal of Clinical Hypertension, entitled, "Academic Physicians Confront a Hostile World: The Creation of ACRE." You can get a sense from the "poor us" tone of the title what this defense of the Association of Clinical Researchers and Educators is going to be like. I could go on for a while about the "hostile world" that expects that academic physicians might actually manage to live on their salaries, that are generally several times greater than those of any other academics, without also stuffing their pockets with industry largesse. But of greater interest is the discussion of the definition of conflict of interest (COI).

In a section labeled "Conflict of Interest: A Disturbing Misnomer," Dr. Weber quotes with approval a speaker at the inaugural ACRE meeting, Prof. Lance Stell of Davidson College, whom he described as a "nationally recognized medical ethicist." I consider Lance a good friend of many years standing and a fully legitimate philosopher-ethicist, but the fulsome description leaves out that on this particular issue, Lance's stance is probably quite atypical of bioethicists (though no one has done a survey so I could never prove that).

The reason Dr. Weber likes Lance Stell's definition so much, and no doubt why Lance was the only bioethicist I am aware of that was invited to speak at the ACRE conference, is that he is said to define COI as what "occurs when practitioners accept personal rewards...in return for actions that could violate their professional obligations. In essence, to accuse a physician of conflict of interest would require empirical proof that, in return for a reward, an action was taken that resulted in diminished care or even harm to patients." Given that starting point, Dr. Weber then says very reasonably, "Clearly such occurrences are extraordinarily rare..."

This definition contrasts quite markedly with the definition of COI that I offer in HOOKED, which in turn is based on a definition constructed by philosopher Edmund Erde. By the definition I favor, a person may be involved in a COI if she becomes involved in certain social arrangements, which would cause a reasonable observer to believe that a person of normal human psychology would (under those arrangements) be tempted to forsake her professional obligations. Erde, in constructing his definition, explains that he did so with the idea that the core concept that COI needed to be grounded in was trust in a social role. I believe that judgment to be exactly correct-- it is precisely the concerns we have about loss of public trust in physicians and in medicine as a whole that motivates our present concerns about COI.

It should be no great surprise that we could make COI go away if we engaged in the right sort of definitional gerrymandering. The question is whether that sort of definition seems genuinely to enlighten us about the core ideas and behaviors, or whether it rather serves to obfuscate the issues.

I am going to stick my neck out here as I am not schooled in the laws regarding bribery. But my current state of understanding is that you could arrest a public official on a charge of bribery if, say, he was observed to have been offered money in exchange for his vote on some pending legislation, and on accepting the money he indicated his willingness to vote the way that the payer wished him to.

Now, imagine that we were to apply the logic Lance Stell uses to define COI to the bribery case. The first thing we would note is that we cannot arrest the corrupt politician just because he takes the bribe and agrees to change his vote. We have to wait until the vote occurs and see that he actually does vote the way the bribe required. Nor are we done yet. We also have to see the outcome of the vote. Let's imagine that despite the politician voting "no," as the person paying the bribe wished, the legislation passes anyway. Then there was no harm, associated with the bribe; and so by the Stell approach, there would have been no crime of bribery. I would not be surprised under those circumstances to be told that the cases in which public officials are bribed are vanishingly rare.

I suggest that the bottom line is:
  • What we are concerned about in the COI issue is public trust in medicine.
  • Public trust can be lost just as much by the appearance or suggestion of compromising behavior as by the behavior itself.
  • Therefore things that create appearances or suggestions that would reasonably cause public trust to be lost ought to be included in the definition of COI.
  • This is especially true when the social arrangements that give rise to the suggestions or appearances are not essential to the conduct of medical practice or medical research, and consist of extra perks for the academic physician. (I gather that the ACRE folks argue that taking money from industry is essential to medical research, beause absent the good ol' entrepreneurial spirit and profit motive, many fewer discoveries will be made. That debate will have to occur on a different occasion.)

Incidentally, you might wonder why a hypertension journal seems to be going out of its way to provide a platform for ACRE and its preaching. You can get a sense of why this is so by reading more about where some of the ACRE leaders get their money, in Danny Carlat's recent blog on the topic: http://carlatpsychiatry.blogspot.com/2009/11/tom-sullivan-of-acre-fame-is-swimming.html

Weber MA. Academic physicians confront a hostile world: the creation of ACRE. Journal of Clinical Hypertension 11:533-36, 2009.

Erde EL. Conflicts of interest in medicine: a philosophical and ethical morphology. In: Speece RG, Shimm DS, Buchanan AE, eds. Conflicts of interest in clinical practice and research. New York: Oxford University Press, 1996:12-41