Norman recently posted about the news that ministers would be reviewing whether PSA testing was sensible on the basis of a study reported in the media, with a further update by a reader here. His link takes you to an article by Sarah Boseley in the Guardian. Unlike some other papers, she at least notes the down side of screening:

the trial also threw up the very real risks of being wrongly identified as at risk and having unnecessary and potentiually damaging treatment. A total of 5,990 prostate cancers were detected in the screening group and 4,307 in the control group.

The rate of overdiagnosis – defined as diagnosis in men who would not have clinical symptoms during their lifetime – was as high as 50% among those who were screened.

Ben Goldacre, in The Guardian, takes the media to task for their poor, and selective, reporting in this case.

all around the world, people were saying something completely different, on the same day, about the very same academic publication: Prostate Cancer Screening May Not Reduce Deaths said the Washington Post. Studies cast doubt on leading prostate cancer test said USA Today. PSA testing may not save your life, after all said Scientific American. Prostate cancer blood test does little to decrease death rate said the Sydney Morning Herald. And so on.

Why would the American and the Australian journalists say something completely different to the British ones, about the very same evidence?

Firstly, our journalists were simply confused. Not a single newspaper managed to clearly explain the risks and benefits of screening in the trial they were writing about. It’s very simple: the study took over 160,000 men between the ages of 55 and 69 and randomly assigned them either to get PSA screening, or to be left alone. The differences were marginal. Yes, there were 20% fewer deaths in the screening group. What does that mean in terms of real people, in real numbers you can understand, not percentages?
[...]
But it gets worse. British journalists also deliberately ignored one whole half of the research, and I’ll confess I’ve slightly lost my sense of humour over this. There were in fact two large studies on PSA testing published in the New England Journal on the 18th of March 2009, not one. They were both published on the same day, in the same journal, they are side by side on the same contents page. British journalists discussed only one of them: the one that said PSA screening does reduce deaths.

The study they ignored was huge too: it took over 75,000 men and randomly assigned them to either a screening programme, or no screening. It found no difference in death rates between the two groups at all, and in case you think it was a close thing, in fact, there was a non-significant trend towards more deaths in the screening group. Not one UK newspaper mentioned this trial.

Ben’s case against the media, and argument that a group of dispersed experts and commentators on the internet can counter and compete with such misinformation, is persuasive. However, while I think informed citzen and scientific comment on blogs and other electronic media can act as Policeman and a corrective check on the media, I’m not convinced such groups are currently as powerful, in terms of engaging with the public more generally, as a front page headline in the media.

I have never had a root canal before. I was told it may take three to four hours. I wish. Five hours, 45 minutes in the chair. I have toxic levels of novacaine and nitrous oxide coarsing through my veins.

I went in for my six-month visit last week. I wasn’t experiencing any pain. I was told I would need two fillings at best and possibly root canal. Once the dentist got in there she said the decay had reached the roots and they were infected. If the roots were infected why didn’t I feel any pain?

Is there any risk with using nitrous oxide for an extended period of time? I had the mask on for a LONG time. Initially they must have had the concentration turned up high because I was starting to go bonkers like I was on drugs (although, I have never done drugs so I have no idea what it feels like). There was someone monitoring the system but she did’t seem to know what she was doing. Someone else walked by and said ‘I think we should turn it down.’

I’m on antibiotics and motrin. My head is pounding right now. Does this sound like a typical root canal experience?

Answer 1: Whoa - 4 hours? I’ve had two and one took about an hour and a half total and the other might have taken 2 max.

The first one I had little or no pain during the actual procedure but had a lot of pain the next few days but they prescribed me vicodin (score!). The second one I had some pain during the procedure and absolutely none afterwards.

Answer 2: Depends who you talk to. Some root canals seem to go a lot smoother than others. I’ve had a few myself and was sore for a few days. Warm tea bags on the area you hurt helped as it served as a healing agent. Try it and feel better!!

Answer 3: I’m guessing a 1st molar & a relatively new general dentist. Tooth # 3/14 can have 4-5 roots to obturate. 5 hrs 45 minutes is not normal-she should have scheduled you for 2 appointments.

Answer 4: WTF kind of dentist did a 5 hour root canal??????? I’m in the field and there is NO WAY it takes that long, even if completely calcified. Here’s a lil something for all you folks who need RCT. Your General dentists are NOT endodontists. IF they choose to do a root canal, it’s usually on a cuspid or incisor. Easy for them, because only one canal. If it’s a molar they should send you to a specialist. General dentists take ONLY a weekend course here or there to learn how to do Root Canals. Endo’s specialize and NEVER EVER take 5 hours. Even if it’s 2 teeth.

As for the N2O on for that long? Maybe a lil nausea might be a side effect, but that would be immediate. Might take longer then 20 mins to wear off. I’m not too sure. I’ve never had a patient on it longer then 45 mins.

IMO, unless you’re a dental phobe, it’s not necessary and just a money maker for the doc. Also, your jaw is gonna be sore for a few days. Avoid using those teeth for about two weeks and use anti-inflammatories and you’ll be OK.

Answer 5: I had to leave disney to find a dentist on a family vacation. Then spent the remaining part of the day riding “Everest” over and over with my kids. You haven’t suffered until you subject a freshly carved up nerve to the G-forces of a roller coaster. I was actively praying for my death.

Jeremy Laurence draws attention to the news that Prof David Salisbury, Director of Immunisation at the Department of Health, has decided to sue the One Click Group - the group who used homophobic attacks on Brian Deer.

I fear this episode is symptomatic of a wider problem. The fault, if Salisbury has one, is not in what he says but how he says it. The tone in a recent Radio 4 ‘Today’ interview, as measles cases hit a new high, was hectoring, with a note of irritation. “I think it’s irrational [refusing the vaccine]. I think it’s putting children’s lives at risk. I can see no shred of benefit,” he said. Is he becoming exasperated? That would not be surprising, but this is not the way to reassure parents anxious about their children’s safety

Whatever the pros and cons of David Salisbury’s legal action against the One Click Group, it should be noted that the Independent cannot be trusted as experts on what is reassuring to parents. In the past few days they have run three stories on vaccines that are on a par with the worst of the Daily Mail’s scaremongering over MMR vaccine. The first one was a front page story on Meningitis C vaccine, which I criticised in this post. The second story was a follow-up to the original Meningitis C vaccine story. I wrote a letter to The Independent about this story - which was not published.

Dear Editor,

The Independentreported on the 27th of February 2009 that doctors in the UK had been asked to trace all babies who had been injected with a meningitis C vaccine, which was also called a ‘tainted jab’. In fact, there is no evidence that any meningitis C vaccine distributed in the UK was contaminated with Staphylococcus aureus; it passed all normal sterility testing. Additionally, there appears to be no evidence that the Department of Health has asked doctors to trace any children, for the very good reason that there is no evidence of any safety risk to UK children. Could The Independent confirm whether this claim is true or just an excuse to provide an exciting headline? Ten years of media misreporting of the MMR-autism hoax, with its detrimental effect on public health, has apparently not been enough to make journalists reflect on their propensity to scaremonger when it comes to vaccine safety.

I have not received any information back from the The Independent to verify their claim that children were being traced.

Whatever the failings of the Department of Health over the years in communicating with the public, they are dwarfed by the huge tottering pile of deliberate misinformation thrown out by the media, with no regard to public safety, over the years.

The third story from The Independent concerning vaccines I will cover later today.

The Telegraph reports:

From next month, the health secretary will lose his power to rule which jabs should form part of a national programmes to immunise children against a host of diseases.

Instead, a change in the law will mean recommendations from Government scientists on vaccinations must automatically be followed.

Critics accused the Government of “passing the buck” over contentious decisions to an unelected committee which was answerable to no-one.

But public health experts said an attempt to “depoliticise” decisions about the health of millions could help to restore public confidence in a national programme which has been badly damaged by concerns over the safety of the MMR vaccine.

Under the new law, all decisions taken by the Joint Committee on Vaccination and Immunisation [JCVI], backed with evidence showing the jabs are cost-effective, must automatically be authorised by the secretary of state for health.

This is a welcome step. Parallels can be made with NICE and the independence of the Bank of England - although both of those are not without controversy.

NICE was created, in part, because of politicians becoming over involved in NHS decision-making about the rationing of drugs. Frank Dobson’s guidance restricting the supply of sildenafil (Viagra) on the NHS was deemed illegal. NICE was created to make evidence-based judgements about the cost effectiveness and suitability of drug treatments on the NHS. Despite some political interference, it has largely prevented politicians getting involved in deciding which drugs the NHS will supply. However, even NICE can have problems with politicians:

Many members of parliament are ready to espouse popular causes such as supporting patients with cancer or crippling diseases. Tabling questions in parliament is an effective way to do this. The House of Commons question book lists 84 questions on trastuzumab, 56 on donepezil, and 188 on interferon beta, but only two on ciprofloxacin, and none on penicillin or prednisolone.

Politicians are susceptable to lobby groups, such as patient groups who can be overly influenced by the pharmaceutical industry. They are open to emotive Daily Mail campaigns. They are influenced by anecdote, and perhaps understandably open to persuasion by their constituents. In short, they are not best placed to make long-term decisions based on the best available information.

The same pressures can exist in vaccination policy. The leading anti-vaccine pressure group, JABS, routinely uses the media to push discredited pseudo scientific views on vaccines - such as the hoax hypothesis that MMR vaccine causes autism. They can also provide emotive cases for journalists.

Ahh, you might say, but no-one would take these people seriously? Well, they might. We were fortunate that the UK government did not cave into political pressure on the issue of MMR vaccine in the early 2000s. At the height of the MMR vaccine scare, it was far from clear that it was in the short-term self-interest of the Labour government to comply with scientific advice. Allowing the supply of single vaccines on the NHS, as requested by Wakefield, would have been less effective and sent a terrible message to the anti-vaccine movement (vindication and permission to move on to criticising single vaccines) and parents (admission of a danger when none existed). In the long term, caving in to such pressures would obviously have made the government look extremely foolish, but at the time newspapers were full of material about the so-called risk.

And there were politicians of both the left and right who did cave in. Liam Fox, himself a doctor, would have. So would Ken Livingstone. Placing vaccination policy outside of the hands of politicians is a welcome step.

JABS are not pleased with this new development.

Pressure group Jabs, a support group for families who believe their children have been damaged by vaccines, said the change was “undemocratic”, expressing concern that a body which was “answerable to no-one” would have the final authority.

Campaign founder Jackie Fletcher said: “The committee is a voluntary advisory body made up of medical professionals which includes members with potential conflicts of interest, because of direct and indirect links with vaccine manufacturers.”

She expressed fears that the move would allow the Government to go further in extending the national vaccination programme, or making its use compulsory, by using the excuse that it is only following the orders of its advisers.

Some brief comments about JABS concerns.

They are concerned that this is undemocratic and that the group is “answerable to no-one”. However, it is unlikely that we are heading into a technocracy. Parts 9 and 12 of the Code of Practice for the JCVI state:

9. The Secretaries of State are accountable to Parliament for the performance of the JCVI and for ensuring that it continues to observe the highest standards of propriety including impartiality, integrity and objectivity in the execution of its role and responsibilities.
[...]
12. Appointments to the JCVI are the prerogative of the Secretaries of State; they are normally of four years duration. Appointments may, however, be terminated, without compensation, in the event of unsatisfactory attendance at meetings or conduct which renders the member unfit to remain in office, or at the discretion of the Secretaries of State.

Are these aspects of the code changing.

Secondly JABS note the potential for conflicts of interest. As people with a vested interest in promoting vaccine safety scares, who have been involved in legal actions over alleged harms from vaccines, this criticism is perhaps attenuated somewhat. However, a risk of conflicts of interest does exist. However, the Code of Practice for the JCVI does note members need to follow the Nolan principles. Additionally, there is a balance to be made between the “purity” of the committee and the need to have experts on vaccines - who due to the very nature of products involved are likely to have some involved with manufacturers.

Thirdly, JABS suggest that this decision to take ministers out of the decision making process is just a scam for ministers to extend vaccination, or make it compulsory. This contradicts their first position, that it removes ministers from the process, but does neatly illustrate the conspiratorial nature of their organisation. That vaccination policy is even further away from their dangerous influence is extremely good news.

I hope I don’t need self hypnosis because I’m pretty sure I don’t have the patience for it. This article says it helps cancer patients relax before they get their tests. Apparently it also helps some people reduce the pain of childbirth.

A search turned up some Youtube videos that claimed to banned. Soundslike a load of crap to me but maybe the following video (for example) really was banned:

This site has some hypnosis downloads which may be better than what you find on Youtube.

Anyway, I could benefit from lower anxiety. The problem is that they say it takes practice I haven’t got the patience to endure more than 1 minute of any self hypnosis things I’ve seen on Youtube.

At first I was suspicious of this weight loss stuff but it turns out that it’s really food craving control hypnosis. I’m not saying that works but it is less suspicios because the only way you’re gonna lose weight is to eat fewer (healthy of course) calories than you burn. Eating less and working out more are the keys.