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American Journal of Orthodontics and Dentofacial Orthopedics, 2014
Bias is an important issue in observational studies, and it should be carefully considered when interpreting the results of such studies. In this article, I will highlight the main types of bias encountered in observational studies. Bias is a systematic error in the design and methods of the study, leading to an incorrect interpretation.
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Bias is an important issue in observational studies, and it should be carefully considered when interpreting the results of such studies. In this article, I will highlight the main types of bias encountered in observational studies. Bias is a systematic error in the design and methods of the study, leading to an incorrect interpretation.
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2018
This chapter on observational studies provides an understanding of the main concepts in epidemiology, introduces common study designs, such as cross-sectional, case-control, and cohort studies, and outlines their importance for clinical research. The hallmark of epidemiological research is that it observes unexposed and exposed individuals under “real ...
Minou Djannatian +3 more
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This chapter on observational studies provides an understanding of the main concepts in epidemiology, introduces common study designs, such as cross-sectional, case-control, and cohort studies, and outlines their importance for clinical research. The hallmark of epidemiological research is that it observes unexposed and exposed individuals under “real ...
Minou Djannatian +3 more
+4 more sources
An approach to observational studies
Forensic Science, Medicine, and Pathology, 2007Medical publishing is an interesting activity that involves careful study and analysis of data followed by writing and submission of reports to peer-reviewed journals for dissemination to the wider audience of colleagues. There is often great pressure on individuals in specialist fields to perform research and to achieve a respectable list of ...
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Understanding observational studies
Drug and Therapeutics Bulletin, 2016The development of evidence-based medicine has encouraged clinicians to consider the best available evidence when making clinical decisions, individualised for the patient.1,2 A hierarchy of levels of evidence about therapy is described, with the highest being meta-analyses and large, well-designed randomised controlled trials.3-5 Lower down the ...
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BMJ, 2012
Researchers investigated whether pioglitazone was associated with an increased risk of bladder cancer in people with type 2 diabetes.1 Use of pioglitazone, an oral antidiabetic agent in the thiazolidinedione class, is controversial.2 The researchers used the general practice research database to extract data from individual patients’ primary care ...
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Researchers investigated whether pioglitazone was associated with an increased risk of bladder cancer in people with type 2 diabetes.1 Use of pioglitazone, an oral antidiabetic agent in the thiazolidinedione class, is controversial.2 The researchers used the general practice research database to extract data from individual patients’ primary care ...
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Maturitas, 2003
The Million Women Study [1] is in the number of participants until now the largest observational study on the relationship between hormone treatment in the postmenopause and breast cancer. There is, however, only a very short observation time of 2.6 years for incident cases and 4.1 years for fatal cases.
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The Million Women Study [1] is in the number of participants until now the largest observational study on the relationship between hormone treatment in the postmenopause and breast cancer. There is, however, only a very short observation time of 2.6 years for incident cases and 4.1 years for fatal cases.
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Observational studies: it’s time to be transparent
British Journal of Dermatology, 2022Sonia Gran +2 more
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Observational Studies in Radiology
American Journal of Roentgenology, 2004C Craig, Blackmore, Peter, Cummings
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