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You need of 95%
confidence intervals to estimate uncertainty around the point estimate (in your
example NNT 25)
Any NNT without 95% CIs is
useless
Regards
Nino Cartabellotta
Director
Via Amendola 2 - 40121 Bologna
Tel. (+39) 051 5883920
Fax (+39) 051 3372195
www.gimbe.org
Da: Evidence based
health (EBH) [mailto:[log in to unmask]] Per conto di Jon Brassey
Inviato: luned́ 3 agosto 2009
13.59
A:
[log in to unmask]
Oggetto: Uncertainty
Hello All,
I may be missing the point, but do others get frustrated with the term
uncertainty in medicine? I've just received another pile of promotional
material from a publisher who's highlighting uncertainty in medicine
and insinuating their evidence is the answer. Surely, 'all'
evidence does is quantify the uncertainty? For instance a drug may have a
NNT of 25 - where's the certainty in that?
Here's hoping for some serious and lighthearted responses.
Best wishes
jon
Jon Brassey
TRIP Database