3.1 Communicable diseases

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Question 16

Researchers test a new cream for eczema. Identical envelopes contain instructions to give either the medicated cream or a placebo cream. The envelopes are mixed before each patient selects one. Why are the envelopes mixed?

[1]

To keep the doctors unaware of which cream each patient receives

To reduce the risk that patients with more severe eczema are placed mostly in one group

To give patients using the placebo cream a small amount of active drug

To compare using both creams together with using each cream separately

To keep the doctors unaware of which cream each patient receives

To reduce the risk that patients with more severe eczema are placed mostly in one group

To give patients using the placebo cream a small amount of active drug

To compare using both creams together with using each cream separately

3.1 Communicable diseases

Question 16

Markscheme

3.1 Communicable diseases

Question 16

Markscheme

3.1 Communicable diseases

Question 16

3.1 Communicable diseases Questions

3.1 Communicable diseases

Question 16

3.1 Communicable diseases Questions