Errors in medical prescriptions occur and a study1 examined whether electronic prescribing may help reduce errors. Two groups of doctors used written prescriptions and had similar error rates before the study. One group switched to e-prescriptions while the other continued to use written prescriptions, and error rates were measured one year later. The results are given in Table 1.     Error No Error Total Electronic 254 3594 3848 Written 1478 2370 3848 Table 1 Are prescription error rates different? Find a 90% confidence interval for the difference in the two proportions, pw-pe, where pw is the proportion of errors using written prescriptions and pe is the proportion of errors using e-prescriptions. Round your answers to three decimal places. The 90% confidence interval is Enter your answer; The 90%confidence interval, value 1 to Enter your answer; The 90%confidence interval, value 2. Is it plausible that there is no difference? Choose the answer from the menu; Is it plausible that there is no difference

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Chapter 6, Section 3-CI, Exercise 145

Are Errors Less Likely with Electronic Prescriptions?

Errors in medical prescriptions occur and a study1 examined whether electronic prescribing may help reduce errors. Two groups of doctors used written prescriptions and had similar error rates before the study. One group switched to e-prescriptions while the other continued to use written prescriptions, and error rates were measured one year later. The results are given in Table 1.


    Error No Error Total
Electronic 254 3594 3848
Written 1478 2370 3848

Table 1 Are prescription error rates different?

Find a 90% confidence interval for the difference in the two proportions, pw-pe, where pw is the proportion of errors using written prescriptions and pe is the proportion of errors using e-prescriptions.

Round your answers to three decimal places.

The 90% confidence interval is Enter your answer; The 90%confidence interval, value 1 to Enter your answer; The 90%confidence interval, value 2.

Is it plausible that there is no difference?

Choose the answer from the menu; Is it plausible that there is no difference?
 


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