Question

If you were the epidemiologist conducting research on the risk of stroke among women with varying numbers of children, what possible bias and confounding could you anticipate, and how would you control them?

I just need a starting point for this question?

Answer 1

Some of the biases are

· Selection biases such as recruitment of the study paricipants

· Information biases – inaccurate or incomplete data

· Random or systematic error

Some of the confoundings are

· Prediction in stroke among multipara womens

· Unequal distribution of the study group such as control group and study groups.

· Study design which is not measurable or unknown

Some of the strategies to avoid bias and confoundings are

· Randomization- Make sample selection based on the target population or random selection, sampling methods.

· Restriction (restriction of study participants based on the factors, Inclusion criteria)

· Matching

· Specific variables and defined objectives

· Make sure that the outcomes are sure and clearly defined

· Plan your data collection carefully. Plan the method which best suits your research studyax