Skip to main content
. 2018 May 11;39(6):1138–1147. doi: 10.1177/0271678X18771250

Table 2.

Measuring VT with a decreasing number of plasma samples.

Samples VT ± SD Slope r 2
23 3.7 ± 0.9 1.00 1.00
17 3.7 ± 0.9 0.98 0.94
11 3.7 ± 1.0 0.98 0.94
6 4.0 ± 1.1 1.10 0.91

Note: Deviation of the slope from 1.0 provided accuracy relative to all 23 samples. For example, a slope of 1.10 for the six-sample subset implies that this smaller number of samples overestimated VT by 10%. The correlation coefficient (r2) measures how well the smaller number of samples substitutes for the VT calculated using the entire 23 timepoints.