Loss of follow-up is a problem in most cohort studies and often introduces bias. It is a situation in which a researcher loses contact with a subject, resulting in missing data. Too many subjects failing follow-up diminish the internal validity of the study.
<h3>What is follow-up loss in cohort studies? </h3>
- Follow-up loss introduces bias (observed deviation of relevant measures from what would have been observed without bias) if there is a difference in the likelihood of loss due to follow-up related to exposure status and outcome.
- In the clinical research trials industry, loss due to follow-up is defined as patients who were actively participating in a clinical research trial at some point but who lost themselves (due to errors in the computer tracking system or due to unavailability).
- In cohort studies: 1) Imaging outcome, is loss of follow-up. 2) These are essentially prospective studies, so confounding factors are not an issue. 3) These studies help examine multiple outcomes from a single, infrequent exposure. 4) These are usually faster and cheaper than case-control studies.
<h3>What are advantage and disadvantages of cohort studies?</h3>
- In general, the main advantage of cohort studies is the ability to study multiple exposures and multiple endpoints in a single cohort. This recording allows you to select index groups, so you can explore rare recordings.
- A major weakness of cohort studies is that this type of study design can be time consuming and expensive for results that are rare or evolve over long periods of time. It's a question of research.
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The correct answer to this open question is the following.
Although there are no options attached we can say the following.
Canada is a great country. Indeed, a country with a great quality of life. That is why many immigrants want to go to Canada, to improve their living conditions.
Canada’s immigration policies reflect the underlying values of its citizens and impact Canadian history because these policies reflect the Canadian values that welcome people and support diversity as long as immigrants understand that they have to respect Canadian laws and the culture, traditions, history, and beliefs systems of this nation.
Canada has welcomed immigrant workers when the country has labor shortages and needs specific skills for workers, for instance, in agriculture.
The extreme temperstures are
ebruary 27.0 °C (80.6 °F) Yeysk, Krasnodar Krai
March 31.0 °C (87.8 °F) Armavir, Krasnodar Krai
April 36.8 °C (98.2 °F) Armavir, Krasnodar Krai
May 38.7 °C (101.7 °F) Lake Elton, Volgograd Oblast
Answer:
b.They began to disappear.
Explanation:
The effects of the consonant chord and the dissonant chords on the ears of the listener was recognized in western music as early as 5th century BC.
Consonant chords are harmonious sound and are pleasing to the ears, while dissonant chords are clashing sound and elicits a feeling of tension in the brains. The consonant and dissonant chords affects the human mind. The consonant sounds gives a happy feeling while the dissonant sound gives a sad feelings to our mind.
But in the twentieth-century, Arnold Whittall initiates the changing approaches to the harmony and concept of tonality. The twentieth-century music showed the most diverse in the music world. Consonant and dissonant sounds began to disappear. Arnold Schoenberg develop a theoretical model of music in the twentieth-century known as the "twelve-tone music".
Hence the answer is ----
b.They began to disappear.
