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Are you sure – the importance of ‘‘reasonable doubts’’
One of my patients always finishes our
consultation by leaning forward and
asking me about my advice – ‘‘are you
sure?’’ I first responded by saying ‘‘No –
I’m making it up.’’ I have known him
and his wife for a long time and we can
banter and laugh at each other so we
have developed a repartee which we
play out at each consultation. The
problem of course is that I am not
always sure and it worries me. This
introduces the concept of ‘‘reasonable
doubts’’ and whether it is a burden or
strength.
Unfortunately too many people do
not appear to experience reasonable
doubts. A lot of the problem stems
from observational studies in medicine
where belief is an accepted mandate for
management without the proof of
properly constructed randomised trials.
Hormone replacement therapy as a
form of cardioprotection and vitamins
have been advocated as being beneficial
but sadly the painful proof, long in
coming, identified no advantages.1,2
Many were advised without reasonable
doubts and without a clear statement of
lack of harm – no one was sure but
many thought they were.
In contrast calcium antagonists were
promoted as being harmful.3 There was
no controlled evidence to support the
claims but belief overcame doubt and
the damage was comprehensive and
certainly driven by forces other than
patient care. It might be charitable to
excuse the sequence of events as a lack
of reasonable doubt but I fear there
were darker forces at work.4 I was
never sure of the data and its presenta-
tion and said so in this journal. We
now know our doubts were valid and
our position in contrast to the Lancets
was in the best interest of the patients.5
Journals have a duty to try to offer
honest balance and express their
opinion based on fact. Above all else
all editors should possess reasonable
doubts and promote the ‘‘are you
sure?’’ philosophy before adopting
extreme positions. The British Medical
Journal adopted a similar extreme and
unsupported position regarding female
sexual dysfunction.6
Atenolol was recently questioned in
the Lancet regarding its role in the
treatment of hypertension.7 There was
no balanced editorial link in contrast to
the totally unbalanced link to the calcium
antagonist ACTION trial which
perpetuated biased belief in the absence
of proof.8,9 Editorial failures like this
suggest an absence of reasonable doubt
at the highest level – where it is most
needed.
When we feel sure without proof we
must be certain the consequences of our
subsequent actions will not be harmful
especially if we are dealing with large
populations of people. This applies to
politics as much as medicine – the UK
government was sure there were weapons
of mass destruction in Iraq – if only they
had had reasonable doubts!
We live in interesting times, often
beyond the reach of satire. Watching
curves part or fail to do so in clinical
trials is the platform for being sure
about treatment providing the studies
are properly constructed and evaluated.
In the absence of solid data decision
making can only be determined by
belief but it must be a belief that is
not absolute and a belief that is shared
with colleagues and patients in a trans-
parent way. This may seem self evident
given that we all know we do not pos-
sess all the answers but for some having
doubts is a sign of weakness. In my
view admitting to doubts is a reflection
of the empathy we all should possess
with those about whom we are making
decisions. Having or expressing reason-
able doubts is a sign of medical (polit-
ical or way of life) maturity and
strength . . . . am I sure? Yes.
Graham Jackson
Editor
REFERENCES
1 Wenger NK. Menopausal Hormone
Therapy: Is there evidence for cardiac
protection? In: Shaw LJ, Redberg RF,
Eds. Coronary disease in women.
Totowa: Humana Press, 2004; 321–48.
2 Heart Protection Study Collaborative
Group. MRC/BHF Heart protection
study of cholesterol lowering with sim-
vastatin in 20536 high risk individuals;
a randomised placebo-controlled trial.
Lancet 2002; 360: 7–22.
3 Jackson G. Calcium antagonists: never
let the truth get in the way of a good
story. Br J Clin Pract 1006; 50: 291–3.
4 Jackson G. Calcium antagonists: a
scandal in need of an inquiry. Int J
Clin Pract 2003; 57: 455.
5 Jackson G. The value of VALUE: the
importance of lowering blood pressure
quickly. Int J Clin Pract 2004; 58:
901.
6 Moynihan R. The making of a disease:
female sexual dysfunction. BMJ 2003;
326: 45–47.
7 Carlberg B, Samuelsson O, Lindholm LH.
Atenolol in hypertension: is it a wise
choice? Lancet 2004; 364: 1684–89.
8 Poole-Wilson PA, Lubsen J, Kirwan B
et al. Effect of long-acting nifedipine on
mortality and cardiovascular morbidity
in patients with stable angina requiring
treatment (ACTION trial): randomised
controlled trial. Lancet 2004; 364:
849–57.
9 Psaty BM, Furberg CD. Contemplating
ACTION – long-acting nifedipine
in stable angina. Lancet 2004; 364:
817–8.
ª 2004 Blackwell Publishing Ltd Int J Clin Pract, December 2004, 58, 12, 1097
EDITORIAL d o i : 1 0 . 1 1 1 1 / j . 1 3 6 8 - 5 0 3 1 . 2 0 0 4 . 0 0 4 4 8 . x