The datetimeevents table

Table source: CareVue and Metavision ICU databases.

Table purpose: Contains all date formatted data.

Number of rows: 4,485,937

Links to:

  • PATIENTS on SUBJECT_ID
  • ADMISSIONS on HADM_ID
  • ICUSTAYS on ICUSTAY_ID
  • D_ITEMS on ITEMID
  • CAREGIVERS on CGID

Table columns

Name Postgres data type
ROW_ID INT
SUBJECT_ID INT
HADM_ID INT
ICUSTAY_ID INT
ITEMID INT
CHARTTIME TIMESTAMP(0)
STORETIME TIMESTAMP(0)
CGID INT
VALUE TIMESTAMP(0)
VALUEUOM VARCHAR(50)
WARNING SMALLINT
ERROR SMALLINT
RESULTSTATUS VARCHAR(50)
STOPPED VARCHAR(50)

Detailed Description

DATETIMEEVENTS contains all date measurements about a patient in the ICU. For example, the date of last dialysis would be in the DATETIMEEVENTS table, but the systolic blood pressure would not be in this table. As all dates in MIMIC-III are anonymized to protect patient confidentiality, all dates in this table have been shifted. Note that the chronology for an individual patient has been unaffected however, and quantities such as the difference between two dates remain true to reality.

SUBJECT_ID, HADM_ID, ICUSTAY_ID

Identifiers which specify the patient: SUBJECT_ID is unique to a patient, HADM_ID is unique to a patient hospital stay and ICUSTAY_ID is unique to a patient ICU stay.

ITEMID

CHARTTIME, STORETIME

CHARTTIME records the time at which an observation was charted, and is usually the closest proxy to the time the data was actually measured. STORETIME records the time at which an observation was manually input or manually validated by a member of the clinical staff.

CGID

CGID is the identifier for the caregiver who validated the given measurement.

VALUE

VALUEUOM

WARNING, ERROR

RESULTSTATUS, STOPPED

MIMIC-III v1.4 documentation