Table 4 Comparison of the degree of missingness in laboratory measurements between case and control groups

Regular:

Median [Q1, Q3]^a

BUN

3.00 [1.00,6.00]

4.00 [2.00,7.00]

1.25 (1.24,1.27)

Potassium

3.00 [1.00,6.00]

5.00 [2.00,7.00]

1.27 (1.26,1.29)

Platelets

3.00 [1.00,5.00]

4.00 [2.00,6.00]

1.25 (1.23,1.27)

Sodium

3.00 [1.00,6.00]

5.00 [2.00,7.00]

1.27 (1.26,1.29)

WBC

3.00 [1.00,5.00]

4.00 [2.00,6.00]

1.25 (1.23,1.26)

Informative:

Observing rate^b

pH (arterial)

11.75%

52.88%

5.00 (4.84,5.16)

pH (venous)

9.74%

16.86%

1.80 (1.69,1.93)

PaO2

15.83%

70.78%

4.97 (4.84,5.10)

PaCO2 (aterial )

15.82%

70.74%

4.97 (4.84,5.10)

PaCO2 (venous)

9.76%

17.06%

1.82 (1.71,1.94)

Lactate

14.47%

39.99%

2.96 (2.85,3.08)

Troponin

10.41%

19.06%

1.90 (1.79,2.02)