A true causal factor may increase or decrease the chance of disease. Select one: True False
When there is no association there is no causation. Select one: True False
When there is an association there must be causation. Select one: True False
Most diseases have a single cause. Select one: True False
1. Causation means any change in the value of one variable will cause a change in the value of another variable so correlation (or association) does not imply causation so "When there is no association there is no causation" is false statement.
Hence Option: False.
2. Similarly the statement "When there is an association there must be causation" is false statement.
Hence Option: False.
3. "Most diseases have a single cause" is a true statement (For example hypertension is a single cause for several diseases).
Option: True.
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