crp
DESCRIPTION
CRPTRANSCRIPT
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HARM WORKSHEET
Are the results of this haerm study valid?
Citation: CELECOXIB VERSUS DICLOFENAC AND OMEPRAZOLE IN REDUCING THE RISK OF RECURRENT ULCER BLEEDING IN PATIENTS WITH ARTHRITIS
Were there clearly defined groups of patients, similar in all important ways other than exposure to the treatment or other cause?
Yes, (Study Design, 2105)Eligible patients were randomly assigned to receive either 200 mg of celecoxib (Celebrex, Pharmacia) twice daily plus omeprazole placebo daily or 75 mg of extended-release diclofenac (Voltaren XR, Novartis) twice daily plus 20 mg of omeprazole (Losec, AstraZeneca) daily for six months.
Were treatments/ exposures and clinical outcomes measured in the same ways in both groups (was the assessment of outcomes either objective or blinded to exposure)?
Yes,
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Was the follow-up of study patients sufficiently long and complete?
Yes,
Do the results satisfy some “diagnostic tests for causation”?
Yes,
Is it clear that the exposure preceded the onset of the outcomes?
Yes,
Is there a dose-response gradients? Can’t tell
Is there positive evidence from a “dechallenge-rechallenge” study?Is the association consistent from study to study?Does the association make biological sense?
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Are the valid results from this harm study important?What is the magnitude of the association between the exposure and outcome?What is the precision of the estimate of the association between exposure and outcomes?
Adverse outcomes Totals
Present (case) Absent (control)
Exposed to the treatment
Yes(cohort)
a. 9 b. 134 a+b
No(cohort)
c. 7 d. 137 c+d
Totals a+c b+d a+b+c+d
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Should these valid, potentially important results change the treatmentof your patient?
Do the results apply to our patient? Yes,
Is our patient so different from those in the study that its results don’t apply?
No, our patient similiar to the patient in the study
What are out patient’s risks of the adverse event?
To calculate the NNH (number of patients we need to treat to harm one of them) for any oods ratio (OR) and our patient’s expected event rate for this adverse event if they were not exposed to this treatment (PEER):
Berapa orang yang diobati untuk menghasilkan 1 orang yang berisiko NNH = -69,9
What are our patient’s preferences, concerns and expectations from this treatment?
The treatment doesn’t move any adverse to the patient
What alternative treatments are available?