Table 1.
Comparison of HbA1c values obtained by HPLC and point of care*
| Point-of-care HbA1c (%) |
HPLC HbA1c (%) |
Correlation | P-value | |
|---|---|---|---|---|
| Initial HbA1c (n = 121) |
8.1 ± 1.2 65 (40–104) |
8.4 ± 1.4 68 (38–113) |
0.97 | < 0.0001 |
| Final HbA1c (n = 121) |
8.4 ± 1.4 68 (38–130) |
8.8 ± 1.6 73 (38–147) |
0.97 | < 0.0001 |
| Absolute ΔHbA1c (n = 121) |
0.3 ± 1.1 | 0.4 ± 1.2 | 0.93 | < 0.0001 |
| Slope (ΔHbA1c/year) (n = 121) |
0.4 ± 1.5 | 0.4 ± 1.6 | 0.91 | < 0.0001 |
*
HbA1c data presented as % with standard deviation and in mmol/mol with range.