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Table 1 Patient cohort characteristics for MIMIC-IV and eICU datasets

From: Association of body temperature and mortality in critically ill patients: an observational study using two large databases

Patient characteristics

MIMIC-IV (N = 43537)

eICU (N = 75184)

MIMIC-IV Hosp. Mortality association P-Value

eICU Hosp. Mortality association P-Value

Temperature (°C)

36.9 (36.6–37.2)

37.1 (36.6–37.6)

 < 0.001

 < 0.001

Temperature gap (°C)

1.1 (0.7–1.7)

1.1 (0.7–1.6)

 < 0.001

 < 0.001

Hospital death

4069 (9.3%)

6931 (9.2%)

NA

NA

ICU death

2678 (6.2%)

3784 (5%)

NA

NA

Sex (Male)

24368 (56%)

40402 (53.7%)

0.002

0.173

Age (years)

66.8 (54.8–78.1)

65 (53–76)

 < 0.001

 < 0.001

APS-III

39 (29–54)

40 (29–52)

 < 0.001

 < 0.001

SOFA

3 (1–5)

2.5 (1–4.5)

 < 0.001

 < 0.001

Charlson score

5 (3–7)

4 (2–6)

 < 0.001

 < 0.001

Emergency

23212 (53.3%)

29384 (39.1%)

 < 0.001

0.931

Ventilation

12273 (28.2%)

18418 (24.5%)

 < 0.001

 < 0.001

Vasopressor usage

1748 (4%)

7582 (10.1%)

 < 0.001

 < 0.001

Dialysis

1354 (3.1%)

2448 (3.3%)

 < 0.001

 < 0.001

Steroid usage

7033 (16.2%)

7026 (9.3%)

 < 0.001

0.61

CVICU + CCU

7560 (17.4%)

7773 (10.3%)

 < 0.001

0.299

MICU

8255 (19%)

6623 (8.8%)

 < 0.001

 < 0.001

Neuro SICU

1236 (2.8%)

9632 (12.8%)

 < 0.001

0.011

SICU

5695 (13.1%)

4953 (6.6%)

0.816

 < 0.001

Atrial fibrillation

5950 (13.7%)

6174 (8.2%)

 < 0.001

 < 0.001

Cancer

5421 (12.5%)

5326 (7.1%)

 < 0.001

 < 0.001

Cardiac arrest

22 (0.1%)

1480 (2%)

 < 0.001

 < 0.001

Chronic kidney disease

7485 (17.2%)

4771 (6.3%)

 < 0.001

 < 0.001

Chronic liver disease

4174 (9.6%)

809 (1.1%)

 < 0.001

 < 0.001

Congestive heart failure

9574 (22%)

5965 (7.9%)

 < 0.001

 < 0.001

Chronic obstructive pulmonary disorder

9672 (22.2%)

6378 (8.5%)

 < 0.001

0.06

Diabetes

7208 (16.6%)

7140 (9.5%)

0.751

0.031

Hypertension

23347 (53.6%)

9500 (12.6%)

0.192

 < 0.001

Ischemic heart disease

13780 (31.7%)

5642 (7.5%)

0.014

0.258

Non-septic cardiac arrest

276 (0.6%)

1457 (1.9%)

 < 0.001

 < 0.001

Sepsis

20369 (46.8%)

3910 (5.2%)

 < 0.001

 < 0.001

Septic cardiac arrest

594 (1.4%)

23 (0%)

 < 0.001

 < 0.001

Stroke

2959 (6.8%)

3153 (4.2%)

 < 0.001

 < 0.001

Traumatic brain injury

1808 (4.2%)

1202 (1.6%)

 < 0.001

0.24

  1. Data are presented as median (IQR) or N (%)
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European Journal of Medical Research

ISSN: 2047-783X

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