A clinical trial is run to investigate the effectiveness of an experimental drug
ID: 3048746 • Letter: A
Question
A clinical trial is run to investigate the effectiveness of an experimental drug in reducing preterm delivery to a drug considered standard care and to a placebo. Pregnant women are enrolled and randomly assigned to receive either the experimental drug, the standard drug or a placebo. Women are followed through delivery and classified as delivering preterm (< 37 weeks) or not. The data are shown below.
Preterm Delivery
Experimental Drug
Standard Drug
Placebo
Yes
17
23
35
No
83
77
65
B. What is the value of the test statistic you computed for Q28? (round to 2 decimal places)?
Preterm Delivery
Experimental Drug
Standard Drug
Placebo
Yes
17
23
35
No
83
77
65
Explanation / Answer
The statistical software output for this problem is:
Contingency table results:
Rows: Preterm delivery
Columns: None
Chi-Square test:
Hence,
Test statistic = 8.96
Experimental Drug Standard Drug Placebo Total Yes 17 23 35 75 No 83 77 65 225 Total 100 100 100 300Related Questions
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