Research Process and Associated Biases

Running head: HOME EXERCISE ASSIGNMENT
RESEARCH PROCESS AND ASSOCIATED BIASES
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1HOME EXERCISE ASSIGNMENT
Study bias in defined as a systematic error that occurs due to the presence of errors in
investigation process and distorted calculations [1]. This is a limiting factor for any research
study as due to the presence of study bias the reliability of the study reduced and validity of the
intervention reduced depending on the degree of the error. There are primarily three type of
biases, such as confounding bias, selection bias, and information bias [2]. This section discusses
about the effect of errors on different study types such as cohort study, case control study and
cross sectional study and their susceptibility to be exposed to each type of individual bias. The
following ranking has been done depending on the susceptibility of each research process.
Cohort study
Cohort study is conducted in the research process to identify the subject group for their
risk of specific disease or any other condition, understanding the exposure status of each
individual in that experiment and to observe the healthcare outcomes for all the patients during
the proposed timeline. This is an effective research approach however; several biases could
affect the analysis of the process [1]. These bias included selection, classification and
confounding bias. Susceptibility to selection bias occurs to the presence of bias in the selection
of cohort population, loss of follow ups and non-responsive data collection and inclusion of
prevalent population, who already were suffering from subject disease [3]. Further,
misclassification errors occur due to the presence of incorrect classification of the exposure
and/or disease status of study participants. Therefore, these are the biases that affected this study
approach.
Case control study