Question: From the data in Table 8.11 calculate a 95% confidence interval for the difference in response (proportion of participants who had a completely healed index

From the data in Table 8.11 calculate a 95% confidence interval for the difference in response (proportion of participants who had a completely healed index corn at sixmonths post‐randomisation) between the corn plaster and scalpel groups?

A. −0.07 to 0.07 B. −0.05 to 0.10 C. −0.08 to 0.21 D. −0.02 to 0.20 E. 0.08 to 0.21

Table 8.11

Randomised (n) Examination post-randomisation (months) 6 9 12 Corn plaster Scalpel 101 101 27/74 24/80 18/55 22/64 20/43 16/51

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