An investigator wants to assess the effect of a beta blocker on pain score (mini

Question

An investigator wants to assess the effect of a beta blocker on pain score (minimal/mild/moderate/severe). The investigator conducted a matched study in which a group of patients (n=20) received a beta blocker and a group of patients did not receive any treatment (control, n-20). Criteria for matching included age, gender, body mass index, smoking status, and diabetes status. a. Specify the independent variable and type (nominal/ordinal/count/continuous) Specify the dependent variable and type (nominal/ordinal/count/continuous) b. Specify the type of design as paired or unpaired Specify appropriate statistical test to compare two groups c. d.

Explanation / Answer

The answer for the questions would be as follows: -

a)

Independent variable is beta blocker and it is a continuous variable.

b)

Dependent variable is pain score and it is a ordinal variable.

c)

The type of design is paired.

d)

The appropriate test for this would be two sample hypothesis test (paired difference test).

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