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Pairs both were exposed

 
Of 2,872 persons who had received radiation treatment in childhood because of an enlarged thymus, cancer of the thyroid developed in 24 and a benign tumor developed in 52. A comparison group consisted of 5,055 children who had received no such treatment (brothers and sisters of the children who had received radiation treatment). During the follow-up period, none of the comparison group developed thyroid cancer, but benign thyroid tumors developed in 6. Calculate the relative risk for benign thyroid tumors.
 
Pair no. Women with Uterine Cancer Women without Uterine Cancer

1

2

7

8

Estrogen user

Estrogen nonuser

Estrogen user

Estrogen user

Estrogen nonuser

Estrogen nonuser

Estrogen nonuser

Estrogen nonuser

1.      Unmatch the pairs.  What is the estimated relative risk of cancer when analyzing this study as an unmatched study design? 

 

Talbot and colleagues carried out a study of sudden unexpected death in women.  Data on smoking history are shown in the following table.

Smoking History for Cases as ASHD sudden Death and Controls (Current Smoker, 1+ Pack/Day) (Matched Pairs), Allegheny County, 1980
Cases Controls
Smoking 1+ Pack/Day Smoking <1 Pack/Day Total

Smoking 1+ Pack/Day

2

8

38

42

  • https://nu.blackboard.com/images/ci/icons/generic_updown.gifQuestion 6

1 out of 1 points

 
 
What are the odds that the controls smoke 1+ pack/day?
 

The relative risk for developing ASHD subsequent to entering this study in men compared to women is:

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