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mels9808
‎04-01-2023
  • 3 Posts
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Re: Calculate Duration (Index Date to Time-to-Event) with Competing Ri...

by Calcite | Level 5 in SAS Programming
‎02-09-2023 10:27 AM
‎02-09-2023 10:27 AM
This is what I am hoping to see in my data:   ID index_date prescription service_date death_date hosp_admdate LTC_admdate death hosp LTC censor censdate 001 09Sep2019 0 . 16Dec2019 . . 1 0 0 1 16Dec2019 002 01Feb2019 1 19Jun2019 06Jul2019 08May2019 . 1 1 0 2 08May2019 003 06Dec2020 0 . . . . 0 0 0 4 10Mar2020 004 01Mar2020 1 05Mar2020 . . 09Feb2020 0 0 1 3 09Feb2020 005 02Dec2018 1 09Feb2019 . 01Mar2019 . 0 1 0 0 09Feb2019 Service_date: date of prescription. End of study date: 10Mar2020.   If first event=prescription, censor=0 and censdate=service_date. If first event=death, censor=1 and censdate=death_date. If first event=hospitalization, censor=2 and censdate=hosp_admdate. If first event=LTC, censor=3 and censdate=LTC_admdate. If no events were experienced and subjects were followed until end of study, censor=4 and censdate=end of study date.   I hope this clears things up!!   ... View more

Re: Calculate Duration (Index Date to Time-to-Event) with Competing Ri...

by Calcite | Level 5 in SAS Programming
‎02-08-2023 02:33 PM
‎02-08-2023 02:33 PM
I was hoping to obtain some sort of variable that identifies the event that occurred first for the individual. For example, if death occurred first then censor=1, if hospitalization occurred first then censor=2, and if both death and hospitalization occurred but death occurred first then censor=1. I also wanted a variable that identifies the censoring date that corresponds to the date the earliest event occurred. I was then hoping to calculate follow-up time by doing censdate-index_date for each subject. ... View more

Calculate Duration (Index Date to Time-to-Event) with Competing Risks

by Calcite | Level 5 in SAS Programming
‎02-08-2023 11:20 AM
‎02-08-2023 11:20 AM
Hi SAS communities,    I am performing a survival analysis where the event of interest is outpatient prescription and competing risks include death, admission to hospital, and admission to long-term care. I have been trying to write a code to find the follow-up time for each individual in the study; however, some individuals experience more than one event, and I want to calculate time from the earliest event experienced, whether it be the event of interest or a competing risk.    This is a simplified version of the dataset: ID index_date prescription service_date death_date hosp_admdate LTC_admdate death hosp LTC censor censdate 001 09Sep2019 0 . 16Dec2019 . . 1 0 0     002 01Feb2019 1 19Jun2019 06Jul2019 08May2019 . 1 1 0     003 06Dec2020 0 . . . . 0 0 0     004 01Mar2020 1 05Mar2020 . . 09Feb2020 0 0 1     005 02Dec2018 0 09Feb2019 . 01Mar2019 . 0 1 0     Service_date: date of prescription. End of study date: 10Mar2020.   I found a code online which creates a censor variable and censdate based on the event, I am just not sure how to modify this code so that it captures the multiple competing risks and takes only the earliest event as the censdate. ... View more
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