A case control study of injuries involving moped riders was conducted in Spain.
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Get it written →A case control study of injuries involving moped riders was conducted in Spain. The authors obtained information from the Spanish Registry of Traffic Crashes regarding 187,353 moped riders injured in traffic accidents between 1990 and 1999. They then compared the group with head injuries (cases) with those with other types of injury (controls). The following data were obtained:
Driver
Passenger
Total
Head injury
Other injury
Head injury
Other injury
Head injury
Other injury
No helmet
17,869
51,900
3,052
12,522
20,921
64,422
Helmet
7,342
86,212
485
7,971
7,827
94,183
25,211
138,112
3,537
20,493
28,748
158,605
Answer the following questions using this data. Enter only your final answer do not enter your working. Note: You must enter your answers to 2 decimal places eg 9.41.
What is the crude odds ratio for the association between not wearing a helmet (exposed) and head injury?
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What is the odds ratio for the association between not wearing a helmet and head injury among moped drivers?
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What is the odds ratio for the association between not wearing a helmet and head injury among moped passengers?
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