Number of labtests around 6 am and midnight has an unusual spike according to charttime of several biomarkers

[fikrynuhuman183]

During one of our analyses we observed that the number of labtests performed at 6 am to be high compared to other parts of the day, also we observed an unusual spike in the number of labtests at midnight (00:00). Here I am using the charttime as the labtest time. I am attaching one of the graphs we obtained below. It shows the number of lab tests performed at specific time intervals.

[alistairewj]

Morning labs. Routine. You could try filtering to only STAT labs to see if you still see the spike, I'd expect it to disappear.

[fikrynuhuman183]

Thank you, I will try that

[fikrynuhuman183]

Can you please let me know what you specifically mean by the STAT labs? I was using the labevents.csv to extract the information, how do we filter the 'STAT' labs from that data?

[alistairewj]

In MIMIC-IV there is a column called priority which is either ROUTINE or STAT. If you are using MIMIC-III it's not available.

[pszolovits]

Take a look at https://www.bmj.com/content/361/bmj.k1479

…

On May 14, 2024, at 9:31 AM, Fikry ***@***.***> wrote: During one of our analyses we observed that the number of labtests performed at 6 am to be high compared to other parts of the day, also we observed an unusual spike in the number of labtests at midnight (00:00). Here I am using the charttime as the labtest time. I am attaching one of the graphs we obtained below. It shows the number of lab tests performed at specific time intervals. image.17.png (view on web) <https://github.com/MIT-LCP/mimic-code/assets/100548085/541c9c1b-573d-4fbb-a7c3-4bdfc4334aff> — Reply to this email directly, view it on GitHub <#1749>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AA2BACZPQMSJPCVFGCWHQYTZCIGZRAVCNFSM6AAAAABHWGI5U6VHI2DSMVQWIX3LMV43ERDJONRXK43TNFXW4OZWGY3DMNRYGM>. You are receiving this because you are subscribed to this thread.

[fikrynuhuman183]

Thank you for the reply, I will take a look