This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A recent magazine article stated that bone mineral density (BMD) may one day predict breast cancer ... (Read 160 times)

sarasara

  • Hero Member
  • *****
  • Posts: 521
on: Jul 24, 2018
A recent magazine article stated that bone mineral density (BMD) may one day predict breast cancer risk in older women, according to a study in the Journal of the National Cancer Institute. Researchers followed the health of 8,905 women who were 65 or older and initially cancer free. Eventually 315 participants developed breast cancer. Women with the highest BMD were almost three times more likely to develop breast cancer, compared to the women with low BMD. Explain why it is not possible to conduct a randomized experiment in this situation.

Question 2

A recent magazine article stated that bone mineral density (BMD) may one day predict breast cancer risk in older women, according to a study in the Journal of the National Cancer Institute. Researchers followed the health of 8,905 women who were 65 or older and initially cancer free. Eventually 315 participants developed breast cancer. Women with the highest BMD were almost three times more likely to develop breast cancer, compared to the women with low BMD. Do the results of this study mean that a high bone mineral density (BMD) causes breast cancer in older women? Explain your answer.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bigsis44

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Jul 24, 2018
Answer to Question 1

IT IS NOT POSSIBLE TO RANDOMLY ASSIGN WOMEN TO EITHER A LOW OR HIGH BMD; IT WOULD ALSO BE UNETHICAL TO FORCIBLY CREATE A HIGH BMD FOR A GROUP OF WOMEN AND SEE IF THIS INCREASES THEIR CHANCES OF DEVELOPING BREAST CANCER.

Answer to Question 2

NO; IT IS JUST PREDICTIVE AT THIS POINT. THIS WAS AN OBSERVATIONAL STUDY, AND THERE COULD BE MANY CONFOUNDING VARIABLES.


sarasara

  • Member
  • Posts: 521
Reply 2 on: Jul 24, 2018
Excellent

bimper21

  • Member
  • Posts: 309
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Vapor density. The top drawing illustrates the movement of a gas with a vapor density less than 1; ... Vapor density. The top drawing illustrates the movement of a gas with a vapor density less than 1; ...
In plant fossils, stomatal density is used to estimate CO2 concentration in the atmosphere In plant fossils, stomatal density is used to estimate CO2 concentration in the atmosphere
T-Bone Steak T-Bone Steak
Fracture and Repair of Bone - Colles Fracture and Repair of Bone - Colles
Which of the following would have a density of 1.89 g/L at 7.0°C and 0.987 atm? Which of the following would have a density of 1.89 g/L at 7.0°C and 0.987 atm?
Physics - Density and Pressure Physics - Density and Pressure
Video: Protein digestion - stomach & small intestine

For a complete list of videos, visit our video library