Hi all,
I wanted to know how to calculate person time and incidence rates given data that is set up in a similar fashion:
ID 001 Hearttransplantdate 3/23/1992 Testdate 12/30/2003 Cardiovascular disease (CVD) 0
ID 001 Hearttransplantdate 3/23/1992 Testdate 5/2/2004 CVD 0
ID 001 Hearttransplantdate 3/23/1992 Testdate 5/13/2004 CVD 0
ID 001 Hearttransplantdate 3/23/1992 Testdate 7/19/2004 CVD 1
ID 002
ID 002
ID 003
ID 003
ID 003
.
.
.
My failure event would be cardiovascular disease (indicated by 1) or the last time they had a test date. My origin would be when they had the transplant date. I want to calculate the person-time in months.
I wanted to know how to calculate person time and incidence rates given data that is set up in a similar fashion:
ID 001 Hearttransplantdate 3/23/1992 Testdate 12/30/2003 Cardiovascular disease (CVD) 0
ID 001 Hearttransplantdate 3/23/1992 Testdate 5/2/2004 CVD 0
ID 001 Hearttransplantdate 3/23/1992 Testdate 5/13/2004 CVD 0
ID 001 Hearttransplantdate 3/23/1992 Testdate 7/19/2004 CVD 1
ID 002
ID 002
ID 003
ID 003
ID 003
.
.
.
My failure event would be cardiovascular disease (indicated by 1) or the last time they had a test date. My origin would be when they had the transplant date. I want to calculate the person-time in months.
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