Week 6 Homework

1)Calculate a 'relative risk' factor & 'risk ratio' for the below problem (use the numbers given to you below and base calculation on chapter 14 example for relative risk ratio):

Over the past year, a number of teenagers have died in traffic accidents.Texting has been associated with some teenage accidents.Determine the risk and risk ratio for cell phone ownership in 16 and 17 year old teenagers with a history of being a driver in a moving vehicle accident.

16 -17 year olds with a cell phone, n=1000, report 351 accidents

16-17 year olds without a cell phone, n = 700, report 128 accidents

[See image attached with question for full disclosure of problem]

2)Interpret the results of the following odds ratio results assuming ( one-sentence interpretation for each is required):

a)OR (low fat diet and colon cancer) = 0.6, [CI is 0.25 to 0.88]

b)OR (aerobic exercise and dental caries) = 1, [CI is 0.95 to 2.12]

c)OR (exposure to second hand smoke and lung cancer) = 1.3, [CI is 1.1 to 3.12]

d)OR (infectious disease of pelvis and ectopic tubal pregnancy) = 3, [CI is 2.4 to 4.5]

**please show work

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