Table 4 Models of the determinants of hypervolaemia (ECFV >105Â % of ideal as determined by bioimpedance)
| Â | B | S.E. | Wald | p-value | Exp(B) |
|---|---|---|---|---|---|
Model A: Baseline model (Nagelkerke R-square 0.272) | |||||
Female v Male | −1.296 | .476 | 7.409 | .006 | .274 |
Non-white v White | −1.859 | .603 | 9.495 | .002 | .156 |
Residual Urea Clearance >1Â ml/min | .678 | .403 | 2.824 | .093 | 1.969 |
Pre-dialysis weight (kg) | -.062 | .016 | 14.648 | .000 | .939 |
Age and Charlson Comorbidity index - not significant in Model A | |||||
Model B: Baseline model plus clinical factors (Nagelkerke R square 0.372) | |||||
Post-dialysis systolic > 160 mmHg | 1.190 | .585 | 4.143 | .042 | 3.288 |
Elevated JVP >3Â cm | 1.377 | .422 | 10.656 | .001 | 3.964 |
Parameters relating to pre-dialysis BP, oedema and basal lung crepitations – not significant in model B | |||||
Model C: Baseline model plus clinical factors and natriuretic factors (Nagelkerke R square 0.435) | |||||
BNP > 100 pg/ml | 1.851 | .602 | 9.468 | .002 | 6.366 |
Parameters related to pre- and post-dialysis ANP not significant in model C | |||||
Constant | 2.675 | 1.420 | 3.547 | .060 | 14.505 |