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Forty individuals were selected to take part in a clinical trial for a new drug to treat a lung condition - Scottish Highers Human Biology - Question 25. - 2019
Question 25.
Forty individuals were selected to take part in a clinical trial for a new drug to treat a lung condition. They were split into two groups. One group was treated wi... show full transcript
Worked Solution & Example Answer:Forty individuals were selected to take part in a clinical trial for a new drug to treat a lung condition - Scottish Highers Human Biology - Question 25. - 2019
Step 1
Which row in the table would have allowed a valid comparison of the treatments?
Answer
To determine which row allows for a valid comparison, we need to look for a row where the groups treated with the drug and placebo have a similar distribution of male, female, smoker, and non-smoker participants.
Upon reviewing the data in each row:
- Row A: does not match in count and gender/smoking status.
- Row B: shows a significant gender and smoking mismatch.
- Row C: also has discrepancies in gender and smoking.
- Row D: actually displays equal distribution of males, females, smokers, and non-smokers between the treatment groups.
Thus, Row B correctly shows a valid comparison, with matched subject characteristics between the treated and placebo groups, allowing for a clear analysis of the drug's effectiveness.