Hi
I'm doing a survival analysis of interfirm relationships and having trouble in understanding how Stata deals with censoring. I understand the concept of censoring and my data have both left and right censoring. My data starts in 2010 and ends in 2017, covering 7 years. I have relationships lasting until the last date of the observation window, and it is not clear whether these relationships continue to survive after the last date or not. Thus, they are right censored. I also have relationships from the first date, meaning that they have started before or exactly at the first date my observation window. Thus, these are left-censored observations.
I have read a paper by Ongena and Smith (2001), [Ongena S., David Smith, 2001, The duration of bank relationships, Journal of Financial Economics 61:449-475], where they are talking about adjustments for right and left censoring in non-parametric, semi-parametric and parametric models. Can anybody explain whether Stata does these adjustments automatically or if there are any options with built-in commands? I want to do non-parametric, semi-parametric and parametric estimations in Stata.
Thanks in advance.
I'm doing a survival analysis of interfirm relationships and having trouble in understanding how Stata deals with censoring. I understand the concept of censoring and my data have both left and right censoring. My data starts in 2010 and ends in 2017, covering 7 years. I have relationships lasting until the last date of the observation window, and it is not clear whether these relationships continue to survive after the last date or not. Thus, they are right censored. I also have relationships from the first date, meaning that they have started before or exactly at the first date my observation window. Thus, these are left-censored observations.
I have read a paper by Ongena and Smith (2001), [Ongena S., David Smith, 2001, The duration of bank relationships, Journal of Financial Economics 61:449-475], where they are talking about adjustments for right and left censoring in non-parametric, semi-parametric and parametric models. Can anybody explain whether Stata does these adjustments automatically or if there are any options with built-in commands? I want to do non-parametric, semi-parametric and parametric estimations in Stata.
Thanks in advance.
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