Delirium Assessment wrong itemids?

[lisagraf]

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I am trying to extract delirium cases from the MIMIC-III Database. One very prominent delirium assessment method is the confusion assessment method (CAM). I have found CAM as items in chartevents. There are 8 related chartevents. CAM consists of 4 feature and every feature is listed twice for some reason.

However there is also an ITEM with ITEMID 228332 that just says "delirium assessment". Can somebody tell me what assessment method was used here?

Update: After taking a closer look at the results of the CAM-ICU assessment I ran into some issues. CAM-ICU consists of 4 features that are assessed:

• Feature 1: Mental Status (MS) Change (ITEMIDs: 228300, 228337)
• Feature 2: Inattention (ITEMIDs: 228301, 228336)
• Feature 3: Altered Level of Consciousness (LOC)/ RASS (ITEMIDs: 228302, 228334)
• Feature 4: Disorganized Thinking (ITEMIDs: 228303, 228335) If Features 1 and 2 and additionally either 3 or 4 are answered with yes the result is positive (delirium present). I have checked some patients where the ITEMIDs 228334-228337 were used and this seems normal. However for patients where 228300-228303 were used the assessment results make no sense. For example for subject_id 40083 a lot of times only feature 4 was checked. If it was "no" nothing else was checked. However if features 1-3 were positive then there could still be a delirium case. Feature 2 was checked only in one of the assessments, but it is a necessary condition for the result being positive. Checking 1,3 and 4 how it was done several times for this patient hence makes no sense.

I assume that the labels and ITEMIDs for the ITEMIDs 228300-228303 do not match. Can somebody confirm that?

[oneyokiman]

Met the same questions. And those data extracted by the postive results of item 228332 (so-called delirium assessment) was far larger than the those diagnosed through CAM-ICU examination rigorously.