Continuous noninvasive hemoglobin monitoring estimates timing for detecting anemia better than clinicians: a randomized controlled trial

Table 3 Intraoperative transfusion units and postoperative Hb concentration

	SpHb monitoring group	Standard care group	p
Intraoperative transfusion units, n	0 (0 to 1)	0 (0 to 1)	0.938
CoOxHb on POD1, g/dl	10.8 (9.6 to 12.2)	11.0 (9.9 to 11.9)	0.705
CoOxHb < 10 g/dl on POD1, %	31.3%	24.3%	0.520
CoOxHb when discharged, g/dl	10.6 (9.8 to 11.1)	10.5 (9.9 to 11.3)	0.921

Data are expressed as the median (interquartile range) or proportion of cases. The median was compared using the Mann-Whitney U test and Fisher’s exact test for categorical variables. POD 1, the first postoperative day

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