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ta from a hypothetical cohort study examining the association between lack of seat belt use and fatal vehicle crashes is p Seat Belt Use Fatal Crash 60 30 90 No Yes Total No Fatal Crash 175 450 625 Total 235 480 715 ing this information, calculate the attributable risk. Express your answer as a decimal, and round to the nearest

ta from a hypothetical cohort study examining the association between lack of seat belt use and fatal vehicle crashes is p Seat Belt Use Fatal Crash 60 30 90 No Yes Total No Fatal Crash 175 450 625 Total 235 480 715 ing this information, calculate the attributable risk. Express your answer as a decimal, and round to the nearest

Phlebotomy Essentials
Phlebotomy Essentials
6th Edition
ISBN:9781451194524
Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Chapter1: Phlebotomy: Past And Present And The Healthcare Setting
Section: Chapter Questions
Problem 1SRQ
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**Question 18** Consider the following scenario to answer the next two questions. Data from a hypothetical cohort study examining the association between lack of seat belt use and fatal vehicle crashes is presented in the following 2x2 table. | Seat Belt Use | Fatal Crash | No Fatal Crash | Total | |---------------|-------------|----------------|-------| | No | 60 | 175 | 235 | | Yes | 30 | 450 | 480 | | Total | 90 | 625 | 715 | Using this information, calculate the attributable risk. Express your answer as a decimal, and round to the nearest hundredth.
Transcribed Image Text:**Question 18** Consider the following scenario to answer the next two questions. Data from a hypothetical cohort study examining the association between lack of seat belt use and fatal vehicle crashes is presented in the following 2x2 table. | Seat Belt Use | Fatal Crash | No Fatal Crash | Total | |---------------|-------------|----------------|-------| | No | 60 | 175 | 235 | | Yes | 30 | 450 | 480 | | Total | 90 | 625 | 715 | Using this information, calculate the attributable risk. Express your answer as a decimal, and round to the nearest hundredth.
**Question 19** From the question above, which is the correct interpretation of the attributable risk you calculated expressed per 100 population. (Please consider your calculated number in place of "X" in the answers.) - ○ Among those who didn’t use seatbelts, X crash fatalities per 100 population could have been prevented if they had worn seatbelts. - ○ Among those who didn’t use seatbelts, X% died in a vehicle crash. - ○ Among those who didn’t use seatbelts, 100 – X crash fatalities can be attributed to their lack of seatbelt use. - ○ The risk of crash fatalities among those who don’t wear seatbelts is X times the risk of crash fatalities among those who do wear seatbelts.
Transcribed Image Text:**Question 19** From the question above, which is the correct interpretation of the attributable risk you calculated expressed per 100 population. (Please consider your calculated number in place of "X" in the answers.) - ○ Among those who didn’t use seatbelts, X crash fatalities per 100 population could have been prevented if they had worn seatbelts. - ○ Among those who didn’t use seatbelts, X% died in a vehicle crash. - ○ Among those who didn’t use seatbelts, 100 – X crash fatalities can be attributed to their lack of seatbelt use. - ○ The risk of crash fatalities among those who don’t wear seatbelts is X times the risk of crash fatalities among those who do wear seatbelts.
Expert Solution
Step 1

Simply subtract the risk for the non-exposed group from the risk for the exposed group to calculate the attributable risk. As a result, attributable risk is also known as the Risk Difference or Excess Risk. The additional risk is "attributable" to the exposure.

In the above mention table total number or fatal accident : 90

In the above mention table total number of non fatal accident : 625

 

Attribution Risk = ( 625 - 90 ) / 725 = 535/725 = 0.74

So Attribution value of above mentioned table is : 74 %

 

 

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