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In a case-control study of the relationship between stressful life events and the occurrence of coronary artery disease, the cases are more likely...

1.   In a case-control study of the relationship between stressful life events and the occurrence of coronary artery disease, the cases are more likely than controls to over report stressful events. The type of error that would most likely result is:

a.   selection bias

b.   non-differential misclassification

c.    differential misclassification

d.   confounding


1.   Among the guidelines for judging whether an association is causal, which of the following is the weakest and most controversial guideline?

a.   strength of the association

b.   dose-response

c.    temporal relationship

d.   specificity of the association

e.   biologic plausibility


1.   Confounding occurs when:

a.   the sample is non-representative

b.   the sample is too small

c.    data have been misclassified

d.   extraneous factors bias results


1.   In a case-control study, recall bias is most likely to result in what type of misclassification?

a.   Differential (non random)

b.   Nondifferential (random)

c.    Neither of the above

d.   Both of the above 


1.   Information bias occurs when:

a.   the sample is non-representative

b.   the sample is too small

c.    data have been misclassified

d.   extraneous factors bias results


1.   Selection bias occurs when:

a)  the sample is non-representative

b)  the sample is too small

c)  data have been misclassified

d)  extraneous factors bias results 

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