Skip to main content

Table 2 The systematic comparison of five hemoglobin measurements regarding correlation, agreement, and assay practicality (n = 48 specimens)

From: Systematic comparison of four point-of-care methods versus the reference laboratory measurement of hemoglobin in the surgical ICU setting: a cross-sectional method comparison study

 

Hb (g/dL), mean ± SD

Correlation coefficient (r)

Agreement

Practicality

Mean difference (bias)

%Bias from the reference

SD

95% LOA

Step of procedurea

Turnaround time (min)

Unit cost (USD)b

LHb (reference)

11.2 ± 1.9

1.000

–

–

–

–

6

30–60

1.6

HctCap

11.7 ± 1.9

0.905

0.46

4.1

0.83

−1.16, 2.08

4

6–10

0.1

HemoCue

11.1 ± 1.8

0.922

−0.18

1.6

0.74

−1.63, 1.28

4

1–2

1.3

iSTAT

11.1 ± 1.8

0.941

−0.15

1.4

0.65

−1.41, 1.12

4

2–3

8.1

SpHb

11.4 ± 2.2

0.670

0.13

1.2

1.66

−3.12, 3.39

2

< 1

65.6

  1. aDetails in the Materials and Methods section
  2. bBased on the exchange rate on May 22, 2019. Note that the unit cost can vary in different settings and countries
Back to article page

BMC Anesthesiology

ISSN: 1471-2253

Contact us