article 1 Doering, L , et al (2007) Utility of observer rated and self report instruments for detecting major depression in women after cardiac surgery A pilot study Now the authors go on to use statistics in another way They already told us there are few measures of depression in women after CABG surgery but there are reports of rates in a similar population, those with coronary heart disease or heart failure Do they report a difference in the gender specific prevalence rates of depression in these women The researchers then present information about the measurement tools they wish to examine in this study They already have a valid and reliable tool, the structured diagnostic interview, to detect depression What do we know about this tool from this description Why not just keep using this tool if we already know it works

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article 1: Doering, L., et al.(2007).Utility of observer-rated and self-report instruments for detecting major depression in women after cardiac surgery: A pilot study. Now the

article 1:

Doering, L., et al.(2007).Utility of observer-rated and self-report instruments for detecting major depression in women after cardiac surgery: A pilot study.

Now the authors go on to use statistics in another way. They already told us there are few measures of depression in women after CABG surgery but there are reports of rates in a "similar population," those with coronary heart disease or heart failure. Do they report a difference in the gender specific prevalence rates of depression in these women?
The researchers then present information about the measurement tools they wish to examine in this study. They already have a valid and reliable tool, the structured diagnostic interview, to detect depression. What do we know about this tool from this description?
Why not just keep using this tool if we already know it works?