I have to use the PEDro scale to evaluate some papers and I've read their explanation of each point. But I still have doubts with number 9 (all subjects for whom outcome measures were available, received the treatment or control condition as allocated or where this was not the case, data for at least one key outcome was analysed by "intention to treat").
The studies I'm qualifying have control groups and they report all results (so I consider all should have this point), but I've found some systematic reviewers that consider this point always with a 0.
Can anyone give me some light with this topic?
Hi Jordi
As an accredited PEDro reviewer I should be able to help- I think!
Intention to treat analysis means that you assume all in the treatment group exactly as it should have been delivered, and that none of the control group received the treatment at all.
For the purposes of the PEDro scale it should be clearly stipulated that all participants received treatment or control as allocated. Or, if they can't guarantee that they have, they state that analysis was by intention to treat (and you'll sometimes see that they write "analysis was by intention to treat"). If you as the reader are not certain that they have met this criteria, you should score it a 0.
See the attached link for more detail.
Regards
David
http://www.pedro.org.au/english/downloads/pedro-scale/
Thanks for the answer!
It makes me think that all studies I'm using should be scored with 1, but I red a meta-analysis that uses some of the papers I use that gave to all studies a 0.
All studies have the same protocol, pre-post analysis with intervention and control group. In all of them, both groups are described by number of participants and, in some of them, their characteristics (age, fitness level, previous injuries,...). All studies give results pre-post for both groups.
In these cases shouldn't be all scored with 1?
If it's necessary I could send you 1 or 2 papers to talk specifically about them.
Thanks for your help David.
Hi Jordi
If you;d like to send me the papers I am could have a look. There is always a level of interpretation in these scales and intention-to-treat is always the one people find the hardest.
Regards
David
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