6.30 Whichhospital is safer? To help consumers makeinformed decisions about heal

Question

6.30 Whichhospital is safer? To help consumers makeinformed decisions about health care, the government releases dataabout patient outcomes in hospitals. You want to compare Hospital Aand Hospital B, which serve your community. Here are data on allpatients undergoing surgery in a recent time period. The datainclude the condition of the patient (“good” or“poor”) before the surgery. “Survived”means that thepatient lived at least 6 weeks following surgery.

         (a) Comparepercents to show that Hospital A has a higher survival rate forboth groups of patients.

       (b) Combine the data intoa single two-way table of outcome(“survived” or “died”) by hospital (A orB). The local paper reports just these overall survival rates.Which hospital has the higher rate?

      (c)Explain from the data, in language that a reporter can understand,how Hospital B can do better overall even though Hospital A doesbetter for both groups of patients.

Good Condition Hospital A Hospital B Died 6 8 Survived 594 592 Total 600 600

Explanation / Answer

a) For good condition The percent of survived in Hospital-A is 594 / 600 = 99% and for Hospital-B 592/600 =98.67% Poor Conditino The percent of survived in Hospital-A is 1443/1500= 96.2% and for Hospital-B 192/200 = 96% From the above two cases we can say that theHospital A has a higher survival rate for both groups ofpatients b) Consider the following table Hospital-A Hospital-B Died 63 16 Survied 2037 784 2100 800 Hospital-A Hospital-B Died 63 16 Survied 2037 784 2100 800 The percent of survived in Hospital-A is 2037/2100= 97% and for Hospital-B 784/800 = 98% From this we can say that Hospital B has ahigher survival rate than Hospital A Hospital-A Hospital-B Died 63 16 Survied 2037 784 2100 800

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