Beryl is conducting an observational study and has trained two raters to use the rating instrument.Both of the raters drop out just after the study has begun,so Beryl has to substitute in less well-trained raters.Beryl has increased the risk of ____.
A)low reliability of the measure
B)low strength of the intervention
C)poor reliability of treatment implementation
D)random irrelevancies in the setting

Question

Quizplus · Accepted Answer

The fact that Beryl had to substitute in less well-trained raters increases the risk of low reliability of the measure. This is because inter-rater reliability is a key component of the reliability of measures used in observational studies. If the raters are not well-trained, their ratings may not be consistent, leading to low inter-rater reliability and ultimately low reliability of the measure.

Beryl Is Conducting an Observational Study and Has Trained Two