Question

Using an appropriate blood pressure cuff size that fits a study participant’s arm circumference is important to get an accurate reading. In a cross-sectional study investigating the association of body weight with blood pressure, investigators had only one blood pressure cuff size available.

What source of bias could potentially be introduced by the presence of only one cuff size?

		Non-differential misclassification of the outcome
		Differential misclassification of the exposure
		Non-differential misclassification of the exposure
		Differential misclassification of the outcome

In the above situation, if the investigators did not design their study with these biases and errors in mind is there anything they can do in the analytic phase to address it?

		yes
		no

Answer 1

Ans

Non differential misclassification of the exposure

Because the person who start study don't cause blinding and there is also false value in the result

Ans

Yes

They may alaoodify the study by using atleast 5-6 types of cuff sizes

Aur they may choose only those comparison group that have same error