Table 2.

Agreement of trend direction between tHb change more than ± 0.25 g/dl and SpHb, ABGHb and aHQHb change more than ± 0.5 g/dl

	Same direction as tHb trend N (%; 95% CI)	Not the same direction as tHb trend N (%; 95% CI)
Increase
SpHb	61 (92.4%; 83.5–96.7%)	5 (7.6%; 3.3–16.5%)
ABGHb	76 (97.4%; 91.1–99.3%)	2 (2.6%; 0.7–8.9%)
aHQHb	84 (100%; 95.6–100%)	0
Decrease
SpHb	68 (97.8%; 88.3–98.6%)	3 (4.2%; 1.4–11.7%)
ABGHb	103 (100%; 96.4–100%)	0
aHQHb	111 (98.2%; 93.8–99.5%)	2 (1.8%; 0.5–6.2%)