Data Bank: `anestart` and `aneend` details, negative `anestart` #261
First of all: thanks for sharing this very interesting dataset.
I have some questions about the meaning of the clinical parameters `anestart` and `aneend`. How are these times defined with respect to anesthesia? (e.g. does `anestart` represent the time of the loss of consciousness? injection of bolus?). Moreover, I notices that for many cases the `anestart` value is negative: what does this mean?
Usually these times mean the moment when an anesthesiologist thinks he/she has taken any meaningful action to start or end anesthesia.
The vital files are auto-recorded data, so their starting and end points may not match the hand-written clinical record.