Table 2.
Bland–Altman: Bias and Limits of Agreement between Tests
| Mean difference (mg/dl) | Limits of agreement (mg/dl) | |
|---|---|---|
| ABL vs AC | −6.3 | +14.0 and −26.5 |
| ABL vs HC | −10.9 | +7.6 and −29.5 |
| ABL vs AC (TGC range) | −3.1 | +11.6 and −17.7 |
| ABL vs HC (TGC range) | −12.8 | +5.5 and −31.1 |
| ABL vs AC (low range) | +1.2 | +13.2 and −10.9 |
| ABL vs HC (low range) | −7.9 | +7.6 and −23.3 |
| ABL vs AC (high range) | −11 | +10.7 and −32.7 |
| ABL vs HC (high range) | −10.5 | +8.5 and −29.5 |
ABL, blood gas analyzer; AC, Accu-Chek; HC, HemoCue; TGC range, tight glycemic control range (80–110 mg/dl); low range, BG <80 mg/dl; high range, BG >110 mg/dl; mean difference, bias; limits of agreement, mean difference ±1.96 SD.