Page 202 - HIVMED_v21_i1.indb

Page 8 of 15 Original Research

A1 B1
110 50

100 40 +1.96 SD

90 30 33.3

i-STAT 4hr mol/I 80 (enzyma c 4hr - i-STAT 4hr) / Mean % 20 Mean

70
10
12.2
60 0

50 –10 –1.96 SD
-9.0
40 –20
40 50 60 70 80 90 100 110 40 50 60 70 80 90 100 110
Enzyma c 4hr μmol/I Mean of enzyma c 4hr and i-STAT4hr μmol/I

A2 B2
110 40

100 30 +1.96 SD
90 20 27.1
i-STAT 6hr mol/I 70 (enzyma c 6hr - i-STAT 6hr) / Mean % 10 0 Mean
80
7.4
60

50 –10 -1.96 SD
-12.4
40 –20
30 –30
30 40 50 60 70 80 90 100 110 40 50 60 70 80 90 100 110
Enzyma c 6hr μmol/I Mean of enzyma c 6hr and i-STAT 6hr μmol/I
A3 B3
110 40
35 +1.96 SD
100 30 31.9

90 25
i-STAT 24hr mol/I 80 (enzyma c 24hr - i-STAT 24hr) / Mean % 15 Mean
20
16.1
70
10
60 5 -1.96 SD

50 -5 0 0.2
40 -10
40 50 60 70 80 90 100 110 40 50 60 70 80 90 100 110
Enzyma c 24hr μmol/I Mean of enzyma c 24hr and i-STAT 24hr μmol/I
FIGURE 4: Passing-Bablok regression curves (A) and Bland-Altman plots (B) comparing creatinine concentrations from the i-STAT device with those obtained from the
enzymatic method. Creatinine concentrations at (1) < 4 h, (2) 6 h, (3) 24 h, (4) 48 h, (5) 72 h and (6) 96 h.
Figure 4 continues on the next page →

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