Fig 1.
Classification of hydration status using the RXc graph and the 50th and 75th percentile tolerance ellipses.
The 50% and 75% percentiles were used to project a 5-point hydration scale on the BIA normogram. Positions 1 and 2 = ‘less hydrated’ individuals; position 3 = ‘normally hydrated’ individuals; positions 4 and 5 = ‘more hydrated’ individuals.
Fig 2.
Flowchart representation of the number of individuals recruited to the study.
Table 1.
Demographic details of study participants.
Table 2.
Study baseline results.
Table 3.
Multiple linear regression analysis of the impedance index (H2/R).
Fig 3.
Vector positions for males on the RXc point graph (N = 42).
Values for male participants are illustrated by circles on the 50%, 75%, and 95% bioimpedance tolerance ellipses of the reference population.
Fig 4.
Vector positions for females on the RXc point graph (N = 48).
Values for female participants are illustrated by triangles on the 50%, 75%, and 95% bioimpedance tolerance ellipses of the reference population.
Table 4.
Classification of hydration as a three-item scale according to the RXC graph scale.
Table 5.
Comparison between ‘less hydrated’ and ‘not less hydrated’ groups.
Fig 5.
Kaplan-Meier graph showing survival time in days according to the ‘less hydrated’ classification (χ2 = 4.08, P = 0.04).
Tick marks indicate censoring of data.
Fig 6.
Kaplan-Meier graph showing survival time in days according to the presence or absence of pre-renal failure (χ2 = 8.99, P = 0.003).
Tick marks indicate censoring of data.
Table 6.
Univariate survival analysis of participants according to hydration status and pre-renal failure classifications.
Table 7.
Multivariate cox regression analysis for death according to age, performance status, cancer type, the ur:cr and the H2/R.