A clinical trial is run to investigate the effectiveness of an experimental drug in reducing preterm delivery
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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 | 15 | 23 | 40 |
No | 83 | 79 | 67 |
Is there a statistically significant difference in the proportions of women delivering preterm among the three treatment groups? Run the test at a 5% level of significance.
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