shirini2
Forum Senior
Topics: 27
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A study of traffic safety showed that 61% of those involved in accidents last year had more than 10 years of driving experience, 21% had 6 to 10 years of experience, and 17% had 1 to 5 years. Traffic experts concluded that experience seems to make drivers more complacent and careless. Which one of the following statements best explains why this conclusion is NOT justified?
1) The rates have not been standardized for age differences.
2) The data are incomplete because of unreported accidents.
3) A comparison needs to be made with similar data on drivers not involved in accidents.
4) No test of statistical significance has been made.
5) Prevalence is used where incidence is required.
is it 3?
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| Ivonne
Find a way or make one
Topics: 58
Posts: 1,617
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I think this study has confounding bias and # 1 can explain why while # 3 offers parcially the solution( Multiple studies and good research design)
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| robin082006
Forum Hero
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4) No test of statistical significance has been made.
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| neuroblastoma
Forum Guru
Topics: 106
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 4) No test of statistical significance has been made.
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| guangyu
Forum Elite
Topics: 29
Posts: 308
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Not 4, question test you how to avoid the bias, i think is A
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| bariluis
Forum Junior
Topics: 11
Posts: 39
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I think that the correct answer is 3 because you need to compare the results with 'controls'. For 4, in order to do a significance test, you will first need a comparison group.
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