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Table 2 Hazard ratios (HR) of waitlisting before policy change, after policy change (in 2001), and for the pre-/post-difference in waitlisting, by age/disability status and year

From: Medicare immunosuppressant coverage and access to kidney transplantation: a retrospective national cohort study

  

Secular trend

    

Pre-post difference

Model

Group

Period

HR

95% CI

P-value

P#b

HR

95% CI

P-value

Full ITS a Model

<65/non-disabled

before policy change

1.00

0.97-1.02

0.681

0.364

0.91

0.83-1.00

0.063

  

after policy change

1.02

0.98-1.06

0.418

    
 

≥65/disabled

before policy change

1.05

1.02-1.08

<0.001

0.515

0.94

0.85-1.04

0.220

  

after policy change

1.03

0.99-1.08

0.123

    

Intermediate Model

<65/non-disabled

overall

1.00

0.98-1.02

0.989

-

0.93

0.85-1.01

0.099

 

≥65/disabled

overall

1.04

1.02-1.07

<0.001

-

0.93

0.84-1.02

0.135

Final Model

<65/non-disabled

-

-

-

-

-

0.93

0.89-0.97

0.002

 

≥65/disabled

overall

1.04

1.02-1.07

<0.001

-

0.93

0.84-1.02

0.135

  1. aITS = interrupted time series.
  2. bP# = P-value for the equality of the within-group trends before and after policy change.