Definitions for observational study
ob·ser·va·tion·al study

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1. Observational study

   In fields such as epidemiology, social sciences, psychology and statistics, an observational study draws inferences from a sample to a population where the independent variable is not under the control of the researcher because of ethical concerns or logistical constraints. One common observational study is about the possible effect of a treatment on subjects, where the assignment of subjects into a treated group versus a control group is outside the control of the investigator. This is in contrast with experiments, such as randomized controlled trials, where each subject is randomly assigned to a treated group or a control group.

How to pronounce observational study?

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How to say observational study in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of observational study in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of observational study in Pythagorean Numerology is: 8

Examples of observational study in a Sentence

1. Christopher Lee:

   The generalizability of a small observational study conducted in Sweden is fairly limited but, interestingly, these results do seem to be similar to what we see here in the United States, the observations found in this study highlight areas of public awareness and education that we must continue to improve. The longer the heart goes without oxygen, the more irreversible damage occurs.

2. Athimalaipet Ramanan:

   This is an observational study of hospitalized children. The limitations include that not all cases may have been captured. This also does not account for the true prevalence of significant COVID-19 infection in children, however, on balance it's an important study as it is likely most children with significant illness would have presented to the hospitals.

3. Victoria Taylor:

   Although this study found that eating more vegetables wasn't associated with a lower risk of heart and circulatory diseases once other lifestyle and other factors were taken into account, that doesn't mean we should stop eating vegetables, there is good trial evidence that eating foods rich in fibre such as vegetables, can help lower weight, and improve levels of risk factors known to cause heart disease. The present observational study can not overcome such evidence and its conclusions can be debated since the authors may have over adjusted for factors that account for lower intake of vegetables.

4. John Rumsfeld:

   The current study is a preliminary,' first step' evaluation of a potential relationship between exhaustion and atrial fibrillation, it is purely an observational study -- it can not conclude a causal relationship, or even which direction such a relationship would go.

5. Naveed Sattar:

   There is good trial evidence that eating foods rich in fibre such as vegetables, can help lower weight, and improve levels of risk factors known to cause heart disease. The present observational study can not overcome such evidence and its conclusions can be debated since the authors may have over adjusted for factors that account for lower intake of vegetables, the results are not surprising. Picking out one single component and assuming just adding it to the diet, e.g., vegetables, is not likely to result in the desired effect.

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Observational_Study