Request for Guidance on Locating Variables in MIMIC-IV Demo Dataset

[Lindasvalenciar]

Dear MIMIC-IV team,

I am contacting you because I am developing a pressure ulcer prediction model using the MIMIC-IV demo dataset that I already have in my possession.

In order to properly train the model, I would need your assistance to locate the following data for each patient within the dataset:

• Age
• Length of stay in the ICU
• Height
• Weight
• Blood pressure
• Glucose levels
• Oxygen saturation (SpO2)
• Braden scale scores (especially for the moisture, activity, mobility, nutrition, and friction categories)

The goal is to use these variables to predict each patient's risk of developing pressure ulcers during their ICU stay.

I would greatly appreciate if you could provide me with guidance on where to find these specific data points within the structure and tables of the MIMIC-IV demo dataset. Your assistance will allow me to better understand the dataset and appropriately select relevant variables to develop a robust predictive model, as a first step before requesting access to the full data.

Once again, thank you for your support to maximize the use of MIMIC-IV data in my pressure ulcer research. Please let me know if you have any other questions.

[alistairewj]

Code for extracting these variables is available in the concepts folder: https://github.com/MIT-LCP/mimic-code/tree/main/mimic-iv/concepts

The only variable not extracted there are Braden scale scores. They are fairly easy to find; look in the d_items table for the concept names and the actual data is in chartevents.