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Table 2 Potassium variability quartiles used for each mean potassium quintile shown in Figure 2

From: The relationship between serum potassium, potassium variability and in-hospital mortality in critically ill patients and a before-after analysis on the impact of computer-assisted potassium control

Mean potassium concentration (mmol/L)

Quartile 1

Quartile 2

Quartile 3

Quartile 4

<3.86 (n = 2,089)

<0.17

0.17 to 0.26

0.26 to 0.38

>0.38

3.86 to 4.06 (n = 2,089)

<0.18

0.18 to 0.26

0.26 to 0.37

>0.37

4.06 to 4.24 (n = 2,111)

<0.19

0.19 to 0.28

0.28 to 0.38

>0.38

4.24 to 4.48 (n = 2,080)

<0.19

0.19 to 0.28

0.28 to 0.40

>0.40

>4.48 (n = 2,082)

<0.21

0.21 to 0.33

0.33 to 0.51

>0.51

Total = 10,451