Case example for Precision (i.e., Reliability)

Case example for Precision (i.e., Reliability)

Definition : Precision (i.e. reliability) means that a method measures the same thing every time you use the method. Here are some examples illustrating the importance of precision (i.e., reliability) in research:

A study is designed to see if a new anti-hypertension drug is effective in reducing blood pressure. Participants in the study have their blood pressure measure to see if the drug has an effect on lowering blood pressure. The study design requires that blood pressure is taken when the individual is in a quiet location using a digital blood pressure monitor.

Discussion questions

1. Imagine that the researcher decides to take the participant's blood pressure after he or she has completed a vigorous exercise routine. Would this be consistent with the research design? Why or why not?

2. In another situation, the researcher takes an individual's blood pressure in a noisy household where many young children are playing in the same room. Would this be consistent with the research design? Why or why not?

3. A researcher accidentally breaks the digital blood pressure monitor and decides to use a manual blood pressure cuff like a nurse would use during a routine check up. Would this be consistent with the research design? Why or why not?

		ORI Curriculum Examples

	Case example for Precision (i.e., Reliability) Definition : Precision (i.e. reliability) means that a method measures the same thing every time you use the method. Here are some examples illustrating the importance of precision (i.e., reliability) in research: A study is designed to see if a new anti-hypertension drug is effective in reducing blood pressure. Participants in the study have their blood pressure measure to see if the drug has an effect on lowering blood pressure. The study design requires that blood pressure is taken when the individual is in a quiet location using a digital blood pressure monitor. Discussion questions 1. Imagine that the researcher decides to take the participant's blood pressure after he or she has completed a vigorous exercise routine. Would this be consistent with the research design? Why or why not? 2. In another situation, the researcher takes an individual's blood pressure in a noisy household where many young children are playing in the same room. Would this be consistent with the research design? Why or why not? 3. A researcher accidentally breaks the digital blood pressure monitor and decides to use a manual blood pressure cuff like a nurse would use during a routine check up. Would this be consistent with the research design? Why or why not?