Correlates of intradialytic hypotension by univariate and multivariate logistic regression.

The table shows odds ratios from univariate and multivariate logistic regression analysis based on baseline data with intradialytic hypotension (IDH) as outcome with adjustment for random patient effect (for 1 unit change in the predictor variable) or comparison between one or more groups (e.g. placebo vs. ARB treatment). The model always included ultrafiltration volume, LV mass index, and plasma albumin. Different predictor variables were added and tested as the fourth variable. IDH episodes were dichotomized to 0 or ≥1 IDH events. HD frequency, HD filter, weekly HD time and access modality references were x3 per week, low flux filter, 8–12 hours/week, and AV-fistula, respectively. Plasma albumin concentration, Charlson comorbidity index, and dialysate calcium concentration were dichotomized with ≥3.9 g/dL (albumin), 26]; SDNN: The standard deviation of the N-N interval obtained by analysis of heart rate variability (HRV) see reference [26] for details; LF/HF ratio: Ratio between low frequency (LF) power and high frequency (HF) power from HRV analysis. HD: Hemodialysis. HDSTART: Measurements performed within the first 30 minutes of the HD-session; HDEND: Measurements performed within the last 30 minutes of the HD-session; CO: Cardiac output; MAP: Mean arterial blood pressure; HR: Heart rate; bpm: beats per minute; TPR: Total peripheral resistance; SV: Stroke volume; CBV: Central blood volume (volume of blood in the heart, lungs, and the great vessels)Correlates of intradialytic hypotension by univariate and multivariate logistic regression.