Question
Bias in epidemiological studies
Answer :
Word Count : 630
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Skip in 10
Bias in epidemiological studies refers to a systematic error that leads to an incorrect estimation of the association between exposure and disease. Unlike random error, which occurs by chance and can be reduced by increasing the sample size, bias consistently distorts the results in one direction. In the field of mental disorders, epidemiological studies are essential for estimating the prevalence, incidence, risk factors, and outcomes of conditions such as depression, schizophrenia, bipolar disorder, anxiety disorders, and substance use disorders. The presence of bias can compromise the validity and reliability of these findings, leading to inaccurate conclusions and ineffective public health interventions. Selection bias occurs when the participants included in a study are not representative of the target population. This may happen if individuals with severe mental illness are institutionalized or homeless and
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