Table 5.

Ordering of matching factors and definitions of sufficient similarity

OrderFactorDefinition of Sufficient Similaritya
1AgebAD <9.9 years
2Cumulative hospital daysc(1) If DHHD patient did not have MPP, factor is not applicable
(2) If DHHD patient had MPP and accumulated 0 days, AD=0 days
(3) If DHHD patient had MPP and accumulated >0 days, AD ≤3 days
3Cumulative EPO dosec(1) If DHHD patient did not have MPP, factor is not applicable
(2) If DHHD patient had MPP and accumulated 0 units, AD=0 units
(3) If DHHD patient had MPP and accumulated >0 units, AD <104,400 units
4Body mass indexbAD <4.6 kg/m2
5Transplant waitlist registrationbEquality
6Congestive heart failuredEquality
7ESRD durationb(1) If DHHD patient had ESRD duration <1 year, AD <0.2 years
(2) If DHHD patient had ESRD duration ≥1 year, AD <4.3 years
8RaceEquality
9CancerdEquality
10Primary ESRD causeEquality
11Cerebrovascular diseasedEquality
12Peripheral vascular diseasedEquality
13Other cardiovascular diseasedEquality
14DiabetesdEquality
15Atherosclerotic heart diseasedEquality
16SexEquality
17Dual Medicare/Medicaid eligibilitybEquality
  • AD, absolute difference; EPO, epoetin alfa; MPP, Medicare as primary payer.

  • a Sufficient similarity was defined by equality in categorical factors and differences no greater than one-third of a SD in continuous factors, with SDs estimated in DHHD patients.

  • b On index date.

  • c During the 3 months preceding the index date.

  • d During the 6 months preceding the index date or as indicated on the Medical Evidence Report.