Follow-up duration in months? How is it calculated?

Modified on Tue, 16 Jan 2024 at 09:52 PM

Follow-up duration is calculated automatically from your data if the following variables are available:

  • Inclusion date
  • Last follow-up date

To convert this duration in months, we divide the number of days between the 2 dates by 30.5

FU duration (months) = (Last follow-up date - Inclusion date) / 30.5

You can still create a new dynamic variable to calculate the follow-up duration with another formula if you prefer.

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