Table 2.

Adjusted hazard ratios for all-cause mortality according to categorized single-pool Kt/V (spKt/V) among 18,242 hemodialysis patients

spKt/V	Model 1		Model 2		Model 3
	HRs	95% CI	HRs	95% CI	HRs	95% CI
< 1.0	1.3	1.16–1.45	1.33	1.19–1.49	1.17	1.05–131
1.0 to < 1.2	1.05	0.96–1.15	1.09	1.00–1.19	1.03	0.94–1.13
1.2 to < 1.4	Reference		Reference		Reference
1.4 to < 1.6	0.92	0.85–1.00	0.93	0.86–1.01	0.95	0.87–1.02
1.6 to < 1.8	0.85	0.78–0.94	0.86	0.78–0.95	0.89	0.81–0.98
≥1.8	0.85	0.76–0.94	0.86	0.77–0.96	0.88	0.79–0.99

Model 1: Adjusted for only baseline spKt/V

Model 2: Adjusted for covariates of model 1 and age, sex, dialysis vintage, end-stage renal disease reason (diabetes, hypertension, glomerulonephritis, or others), and comorbidities (diabetes, hypertension, and cardiovascular disease)

Model 3: Adjusted for covariates of model 2 and session time, systolic blood pressure, diastolic blood pressure, presence of residual kidney function (renal urea clearance ≥1 mL/min), hemoglobin, and normalized protein catabolic rate