Figure 2
Variation in the immediate rise in IVGTT glucose concentrations, ΔG0, with percentage of ideal body weight (%IBW) as a measure of adiposity. Mean (95%CI) observed and calculated values for ΔG0 are shown in 2% strata of %IBW in IG16 (n = 2951 IVGTTs) and IG9 (n = 855 IVGTTs) datasets. Calculated values of ΔG0 are those that would have obtained had 20 g/m2 body surface area been used for IVGTTs carried out using 0.5 g/kg or 20 g/m2 body surface area been used for IVGTTs carried out using the 0.5 g/kg loading calculation. Calculated values were derived for each IVGTT by dividing by the measured glucose distribution volume the IVGTT load that would have been given had either 0.5 g/kg body weight or 20 g/m2 body surface area load been used. The x-axis indicates the range of %IBW in each stratum and is shown with the numbers of observations in each stratum. NOTE—y-axes have been truncated to clarify overall trends.
