Relationships between BHBA concentrations measured
at the 3 different sampling locations were calculated
with Pearson correlation. The differences between
the sampling locations were determined with a one-way
ANOVA. Mean differences were determined with the
least significant difference post hoc test. Because a comparison
of clinical measurements can be inappropriate
using Pearson correlation, the agreement between the 3
sampling locations was graphically analyzed with Med-
Calc (version 12.0.3.0, MedCalc Software bvba, Ostend,
Belgium) as described by Bland and Altman (1986).