Erythropoietin Dose and Mortality in Hemodialysis Patients: Marginal Structural Model to Examine Causality

Table 2

Weight distribution for marginal structural model across 3-month time intervals.

Percentile	Overall (prevalent + incident) patients			Incident patients
	Stabilized IPTW	Stabilized IPCW	Stabilized weight	Stabilized IPTW	Stabilized IPCW	Stabilized weight
Maximum	82.6	3.66	80.9	83.9	3.74	78.7
99th	6.55	1.31	6.28	6.26	1.27	6.10
95th	2.24	1.02	2.17	2.23	1.01	2.18
90th	1.43	1.00	1.40	1.43	1.00	1.41
75th	0.92	0.99	0.92	0.94	0.99	0.93
50th (Median)	0.68	0.97	0.67	0.75	0.98	0.74
25th	0.31	0.94	0.29	0.39	0.96	0.38
10th	0.11	0.90	0.10	0.16	0.93	0.15
5th	0.05	0.86	0.05	0.09	0.90	0.08
1st	0.01	0.78	0.01	0.03	0.83	0.03
Minimum	0.0003	0.076	0.0003	0.0008	0.22	0.0008
Mean	0.86	0.97	0.84	0.90	0.98	0.88

IPTW = inverse probability of treatment weight. IPCW = inverse probability of censoring weight.