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. 2013 Mar 14;8(7):1151–1161. doi: 10.2215/CJN.09460912

Figure 1.

Figure 1.

Adjusted associations between delivered DSL and mortality and IDWG and mortality based on Cox regression models. In the DSL analysis, patients were matched on sex, access type (fistula, graft, catheter), age (±2.5 years), IDWG (±0.25 kg), and postdialysis weight (±1.5 kg). In the IDWG analysis, patients were matched on sex, access type (fistula, graft, catheter), age (±2.5 years), delivered DSL (rounded to 5 minutes), and postdialysis weight (±1.5 kg). Multivariable models were stratified on matched pair assignment, and include covariate adjustment terms for age, race (black, nonblack), postdialysis weight (kg), vintage (<1, 2, 3, ≥4 years), diabetes, coronary artery disease, congestive heart failure, missed dialysis sessions over 30 days (0, 1, 2, 3, ≥4), creatinine (quartiles, mg/dl), albumin (≤3.0, 3.1–3.5, 3.6–4.0, >4.0 g/dl), phosphorus (≤4.0, 4.1–5.0, 5.1–6.0, >6.0 mg/dl), and predialysis systolic BP (≤130, 131–150, 151–170, >170 mmHg); in the DSL analysis, the model was also adjusted for IDWG (kg). DSL, dialysis session length; IDWG, interdialytic weight gain; DelDSL, delivered dialysis session length; HR, hazard ratio; 95% CI, 95% confidence interval; ref, reference.