15th February 2024

A group of researchers are assessing the efficacy of a medication on the patient’s shortness of breath.

A group of researchers are assessing the efficacy of a medication on the patient’s shortness of breath. The patient’s shortness of breath was recorded using a scoring system with 1=no and 5=severe shortness of breath. The results were recorded before and after the medication was administered. 

Which statistical tests should be used to assess for any significant difference?