1.Three essential attribute of cause are disease, confounding and time order.

True or False

2.A cause can be either host or environmental factors:

True or False

3.Confounding can occur when cases and controls have similar characteristics

True or False

4.It is possible to have both random and systematic error in a study:

True or False

5.In a "counterfactual ideal", the ideal comparison group would be the exact same people who are in the exposed group had they not been exposed:

True or False

6.A study must not be valid before its results can be generalized:

Trueor False

7.The Nuremberg Code was the result of not offering penicillin to Tuskegee Syphilis study participants, the standard cure for syphilis, when it became widely available in 1947:

Trueor False

8.Sytematic errors are errors that arise from chance that lead to an incorrect estimate of association:

Trueor False

9.In matching, you separate your study population into subgroups where one group has the confounder characteristic and one group does not.

True or False

10.A causal relationship between an exposure and a disease cannot be established unless all of Hill's guidelines are met:

True or False