What is the control group?
How does science really know whether something is effective or not? The scientific investigation answered this question long ago by trying to create specific checks in experiments. One such measure is a control group or a group of similar people (animals, plants, etc.) that are observed in the same conditions as the test group without getting the thing the scientist wants to study. By creating the most popular conditions for the test and control group, the scientist can determine the real effects of something he wants to try and remove false results, especially if the only essential variation either accepts or does not receive a study.
It is easiest to think of a control group in terms of studies on people, especially those that include drug research. In many of what is called double -blind studies, people participate without knowing if they receive a new medicine. The second group gets placebo and does not know the results of the pin only much later, if at all.
These clinical studies can reveal much about how effective treatment can be, and also show when it doesn't work. For example, a control group that does not receive a medicine that shows improved symptoms in a much higher percentage than the symptoms that the drug that has a drug would indicate that the drug may not be as effective as it was hoped. In this way, not only the potential effectiveness of drugs can be tested, but these studies can also show any side effects or long -term problems that could result.
Another way to create control groups is not so accurate and is called historical control. In this scenario, the group is actually selected by people who have participated in an experiment in the past, selected as a way to compare the results with a group that is currently being studied. Historical control is not always so accurate, because theoretically, the troll may be very similar to the test group.
by other SLOVY, the test cannot use samples that are as well as the control group will be very different from the current group. In controlled studies, it is also part of the way people seek to achieve accurate results, are to try to make the environment the same or similar to all participants. This cannot be done with a group studied in the past, which forms control, although a scientist can certainly look for previous control groups that have similarities to people or other things that are currently studied.
In all human groups, especially in lengthy experiments, it is difficult to create control groups that are exactly similar to uncontrolled groups, but scientists have ways to narrow what they want. Those participating in research can undergo lengthy physical examinations and fill in several questionnaires to make sure they are similar to all others in the group tested. Scualive can exclude participants who do not show this similarity because another factorThe y they have can distort the test results and portray the control group is not as effective.