Question 7 (10 marks) A recent study shows that long-term use of computers leads to hair...

Transcribed Image Text:

Question 7 (10 marks) A recent study shows that long-term use of computers leads to hair loss. The study involves questionnaires from many participants. The results are shown below: Heavy computer users None-heavy computer users Hair loss 500 80 No Hair loss 1200 2800 7.1. What is the relative risk increase of losing hair for heavy computer users compared to none-heavy computer users? (5 marks) 7.2. What is the absolute risk increase of losing hair for heavy computer users compared to none-heavy computer users? (5 marks) Question 8 (20 marks) A study into the effectiveness of two different treatment procedures (A and B) has been reported on young and old patients suffering with a particular Disease. The results were: Treatment Type Patient's age Patient Outcome Success Failure Treatment A Old 55 30 Young 5 10 Treatment B Old 15 5 Young 38 41 8.1. Which treatment has the better success rate overall? (5 marks) a. Treatment A b. Treatment B 8.2. Which treatment is better for young patients? (5 marks) c. Treatment A d. Treatment B 8.3. Which treatment is better for old patients? (6 marks) e. Treatment A f. Treatment B 8.4. What type of statistical paradox exists in this data? (4 marks) g. Berkson Paradox h. Simpson Paradox i. Lindley Paradox j. Accuracy Paradox Question 7 (10 marks) A recent study shows that long-term use of computers leads to hair loss. The study involves questionnaires from many participants. The results are shown below: Heavy computer users None-heavy computer users Hair loss 500 80 No Hair loss 1200 2800 7.1. What is the relative risk increase of losing hair for heavy computer users compared to none-heavy computer users? (5 marks) 7.2. What is the absolute risk increase of losing hair for heavy computer users compared to none-heavy computer users? (5 marks) Question 8 (20 marks) A study into the effectiveness of two different treatment procedures (A and B) has been reported on young and old patients suffering with a particular Disease. The results were: Treatment Type Patient's age Patient Outcome Success Failure Treatment A Old 55 30 Young 5 10 Treatment B Old 15 5 Young 38 41 8.1. Which treatment has the better success rate overall? (5 marks) a. Treatment A b. Treatment B 8.2. Which treatment is better for young patients? (5 marks) c. Treatment A d. Treatment B 8.3. Which treatment is better for old patients? (6 marks) e. Treatment A f. Treatment B 8.4. What type of statistical paradox exists in this data? (4 marks) g. Berkson Paradox h. Simpson Paradox i. Lindley Paradox j. Accuracy Paradox