In a case-control study of obesity and adult-onset asthma, controls are matched to cases on the basis of race and gender.

Medicine

1 answer:

Bess [88]4 years ago

7 0

Answer: d. Confounding

Explanation:

In the context of a scientific study such as this one, a confounding factor is one that has influence on both the exposure and event variable(s), which may lead to over- or underestimation of the direct relationship between them (if any).

For instance: In this example, researchers may have had reason to believe that male gender is associated with both higher risk of obesity (the exposure variable) and adult-onset asthma (the event variable). If gender is not taken into account, one may claim that the finding of an association between obesity and asthma is simply an artifact due to the high proportion of male patients (likely to present with both). Controlling for that variable (such as by matching, as in this example) allows researchers to test for this hypothesis.

You might be interested in

Mark has an immune system disease that results from infection with HIV. Which acronym describes Mark’s disease?

kondaur [170]

Answer:

an upset stomach

Explanation:

when your immune system is weak , it mostly causes an upset stomach! let me know if this helped.

6 0

3 years ago

Read 2 more answers

The cell membrane is both hydrophilic and hydrophobic due to the presence of

STatiana [176]

Answer:

The correct answer is A. The cell membrane is both hydrophilic and hydrophobic due to the presence of phospholipid.

Explanation:

98% of the lipids present in cell membranes are amphipathic, that is, they have a hydrophilic end (which has affinity and interacts with water) and a hydrophobic end (which repels water). The three main types of lipids in eukaryotic membranes are phospholipids, sphingoglucolipids and steroids (especially cholesterol); It is worth mentioning that phosphoglycerides and sphingolipids are found in all cells. The latter, glycolipids and steroids, do not exist or are scarce in the plasma membranes of prokaryotic cells, fungi and some protists. There are also neutral fats, which are non-amphipathic lipids, but only represent 2% of the total membrane lipids.

4 0

3 years ago

A urinary tract infection (UTI) is an infection of any of the urinary tract structures: kidneys, ureter, bladder, or urethra. Co

galben [10]

Explanation:

A urinary tract infection is an infection in urinary tract.

Women more often get infections like urinary tract infections as compared to men because the bacteria can easily reach bladder in case of women more easily than the men. The urethra in women is shorter than in men, so bacteria have to travel a shorter distance.

Urethra is located near rectum in women. Bacteria from rectum can easily travel up urethra and cause many infections.

 In women, having sex also cause infections in the urinary tract because the bacteria can be easily pushed into the urethra.

6 0

3 years ago

True or False: You have more bones in your wrist, hands and fingers than your ankles and feet.

Bumek [7]

Yes this is true this was the one of the units I was working on in school

3 0

3 years ago

A new mother worries for her toddler son's safety and becomes

Temka [501]

Doubt, since the child has not been able to gain confidence in his abilities.