Erratum: Evaluation of point-of-care haemoglobin measuring devices: A comparison of Radical-7 pulse co-oximetry, Hemocue and laboratory measurements in obstetric patients (Anaesthesia (2013) 68 (40-5))

摘要

In this paper [1] there was an error in the Bland-Altman calculation and the presentation of some of the results. In the Summary section on page 40, instead of: "Limits of agreement for co-oximeter readings - were —4.20 to 2.02 g.dl~L and for HemoCue were —1.49 to 1.48 g.dl~. The bias (mean difference) for the co-oximeter was -l.09g.dV1 (95% CI -1.28 to -0.91) and for the HemoCue was -0.001 g.aT1 (95% CI -0.089 to 0.088)." It should read: "Limits of agreement for co-oximeter readings were —2.19 to 3.41 g.dV1 and for the HemoCue were -1.52 to 1.79 g.dT1. The bias (mean difference) for the co-oximeter was 0.61 g.aT1 (95%CI 0.36 to 0.86) and for the HemoCue was 0.13 g.dl"1 (95% CI -0.015 to 0.28)". In the Results section paragraph 2, instead of: "Before surgery, the bias and limits of agreement for the co-oximeter readings (—0.62; —3.55 to 2.30) were greater than those for the HemoCue measurements (—0.09; —1.91 to 1.72) g.cUT1, respectively (Fig. 2). This difference was greater after surgery (co-oximeter readings —1.56; —4.6 to 1.46) and HemoCue readings (0.09; -0.94 to 1.12) (Fig. 3)". It should read: "Before surgery, the bias and limits of agreement for the co-oximeter readings (0.63; —2.28 to 3.54) were greater-than those for the HemoCue measurements (0.09; —1.71 to 1.92) g.dV1, respectively (Fig. 2). This difference was greater after surgery (co-oximeter readings (1.56; —1.44 to 4.56) and HemoCue readings (—0.10; —1.11 to 0.93) (Fig. 3)".