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Table 1 Characteristics of patients in the Complete-case and Imputed-19 cohorts at admission (median [Q1, Q3])

From: Updating mortality risk estimation in intensive care units from high-dimensional electronic health records with incomplete data

   

Complete-case

   

Imputed-19

 

Missing data

Survivors

n = 3489

Non-survivors

n = 787

 

Missing data

Survivors

n = 8590

Non-survivors

n = 1499

Admission type

 

0%

- ELEC: 16.4%

- EMER: 81.4%

- URG: 2.2%

- ELEC: 5.1%

- EMER: 92.4%

- URG: 2.6%

 

0%

- ELEC: 15.0%

- EMER: 80.7%

- URG: 4.3%

- ELEC: 4.7%

- EMER: 90.0%

- URG: 5.3%

Previous ward

 

0%

17 classes

17 classes

 

0%

17 classes

17 classes

Current ward

 

0%

18 classes

18 classes

 

0%

18 classes

18 classes

Age

years

0%

64.66 [51.98, 75.94]

69.99 [56.43, 80.07]

 

0%

65.2 [52.05, 76.56]

70.98 [57.69, 80.32]

PaO2

mmHg

0%

133 [96, 202]

129 [92, 198.5]

 

15.65%

163 [98, 285]

128 [83, 209]

FiO2

proportion

0%

0.5 [0.4, 0.7]

0.5 [0.5, 0.8]

 

22.07%

0.6 [0.5, 1]

0.7 [0.5, 1]

GCS

points

0%

9 [6, 15]

7 [4, 11]

 

0.65%

11 [6, 8]

10 [6, 8]

MAP

mmHg

0%

79 [70, 90]

77 [67, 90]

 

21.45%

80 [70, 92]

78 [68, 91.75]

Platelets

103 cells/mm3

0%

188 [135, 260]

190 [115, 266.5]

 

0.06%

198 [141, 267]

190 [115, 269.75]

Blood creatinine

mg/dL

0%

0.9 [0.7, 1.4]

1.1 [0.8, 1.8]

 

0.04%

0.9 [0.7, 1.3]

1.1 [0.8, 1.9]

Heart rate

min− 1

0%

86 [75, 99]

88 [74.5, 103]

 

0.65%

87 [75, 99]

91 [76, 106]

Systolic blood pressure

mmHg

0%

118 [103, 134]

115 [99, 133]

 

21.30%

118 [102, 136]

114 [98, 134]

Temperature

°C

0%

36.89 [36.28, 37.5]

36.67 [36.11, 37.44]

 

1.07%

36.78 [36.22, 37.33]

36.67 [16, 37.33]

Sodium

mEq/L

0%

139 [136, 142]

139 [136, 142]

 

25.37%

139 [136, 141]

139 [135.25, 142]

Potassium

mEq/L

0%

4.1 [3.7, 4.4]

4 [3.7, 4.4]

 

25.36%

4 [3.7, 4.5]

4.1 [3.7, 4.5]

White blood cells

K cells/mcL

0%

12.1 [8.9, 16.3]

12.9 [8.8, 18.2]

 

0.06%

11.5 [8.4, 15.5]

12.15 [8.5, 17.2]

Respiratory rate

min− 1

0%

18 [15, 17]

20 [18, 19]

 

0.65%

17 [15, 20]

20 [18, 19]

Hematocrit

%

0%

31.4 [28.5, 34.9]

31.6 [28.1, 35.3]

 

0.04%

32.2 [28.5, 36.5]

31.5 [27.8, 35.5]

Arterial pH

 

0%

7.38 [7.33, 7.43]

7.37 [7.31, 7.43]

 

15.23%

7.38 [7.33, 7.43]

7.37 [7.3, 7.43]

  1. ELEC: elective; EMER: emergency; URG: urgent; PaO2: arterial partial pressure of oxygen; FiO2: fraction of inspired oxygen; GCS: Glasgow Coma Scale; MAP: mean arterial pressure.