Explanation: Signs and symptoms of superficial or deep frostbite - such as white or pale skin, numbness, or blisters Increased pain, swelling, redness, or discharge in the area that was frostbitten Fever.

8 0

3 years ago

Read 2 more answers

A health worker is interested in determining if omega-3 fish oil can help reduce cholesterol in adults. She obtains permission t

Dominik [7]

Answer:

Observational study
See explanation below
No

Explanation:

This is an observational study as the health worker did not conduct any experiment but instead, she observed and studied patients data and drew her inferences from the available data.
A confounding is an external variable in an experiment that can change the effect of the dependent and independent variable. They can ruin an experiment if not accounted for and suggest false correlations, and introduce bias as it is one of the sources of bias in epidemiological studies. For example, using the study above, it is said that the cholesterol reading of the group not taking omega-3 fish oil is 18 points higher than the other; a confounding variable would be like an extra independent variable unaccounted for which could influence the outcome of the study like the age of the patients, family history, diet etc. All these extra variables can influence the cholesterol level of the patients but yet were unaccounted for and if inferences are made from the observations, the correlations could be false.
Even though the 18 point difference is statistically significant, they cannot conclude that omega-3 fish oil is the cause because of the effect of confounding in experiments and the many external variables like lifestyle, diet, smoking etc. which could influence the outcome of the research that were unaccounted for

7 0

3 years ago

Why are measuring objectives in a community program important?

kotegsom [21]

Answer:

<h2>4. to monitor changes to the problem.</h2>

Explanation:

Measuring objectives is measure the progress, that why "to monitor changes to the problem" is the answer.

When we are setting objectives, these need to be measurable, because monitoring is crucial. This way, we can have a particular approach to events and see if objectives are having the expected performance.

3 0

4 years ago