RFI: Evaluating an Intervention
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Dear All,
Thanks for being such a great resource.
I am thinking of evaluating the project where I am working now. There
are 3 components (training, MIS and infrastructure). Just some of the
health units in the intervention group would go under rehabilitation
of infrastructure.
My idea is taking a control out of the districts where the interven-
tion is taking place.
Due to limited resources the baseline survey was based in a conven-
ient sampling method (not representative) and in some of the units
surveyed by the baseline rehabilitation of infrastructure has not
taken place.
How would you recommend the control to be selected? If your answer is
that there are too many biases to think on a possible "decent" way to
evaluate given the circumstances, then if you would choose a random
sampling method which would be the sample size (i.e. # of health
units) to study in baseline? Is there a standard number to study
health facilities?
I have also considered that we are not the only project in the dis-
tricts and that improvement in MIS can affect the real effect of the
intervention
Thanks again.
Julia Valderrama, MD, MPH
mailto:juliaval@hotmail.com
http://www.geocities.com/jvalder2001
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