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CSR Frequently Asked Questions

General Questions
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General Questions about Program-Specific Reports
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Patient and Graft Survival Rate Questions
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Expand What does "risk-adjusted" mean?What does "risk-adjusted" mean?
Expand How do you choose what factors to include in risk adjustment?How do you choose what factors to include in risk adjustment?
Expand When living donor and deceased donor outcomes are combined to calculate overall survival outcome statistics, how is it possible that survival may become significantly different from what is expected when this is not the case for either subgroup?When living donor and deceased donor outcomes are combined to calculate overall survival outcome statistics, how is it possible that survival may become significantly different from what is expected when this is not the case for either subgroup?
Expand How can I find out what covariates are used in the risk adjustments? How can I find out what covariates are used in the risk adjustments?
Expand How do you choose which transplants to calculate survival for in the CSRs? Can’t we get more recent data?How do you choose which transplants to calculate survival for in the CSRs? Can’t we get more recent data?
Expand Why are survival cohorts for thoracic (heart and lung) patients different than the others prior to the July 2009 reports?Why are survival cohorts for thoracic (heart and lung) patients different than the others prior to the July 2009 reports?
Expand How are survival rates calculated? How are survival rates calculated?
Expand How is expected survival calculated?How is expected survival calculated?
Expand Why are there no expected survival values for pediatric lung and kidney recipients?Why are there no expected survival values for pediatric lung and kidney recipients?
Expand Why aren't there exactly 5% of centers that have a survival rate that is significantly different than expected?Why aren't there exactly 5% of centers that have a survival rate that is significantly different than expected?
Expand If a center accepts expanded criteria donor (ECD) kidneys, won’t the lower quality of these organs be detrimental to post-transplant survival measures?If a center accepts expanded criteria donor (ECD) kidneys, won’t the lower quality of these organs be detrimental to post-transplant survival measures?
Expand Many of the post-transplant models reflect adjustment for prior events, such as a previous transplant or prior surgeries. Are these still reflected if they took place before the study time period?Many of the post-transplant models reflect adjustment for prior events, such as a previous transplant or prior surgeries. Are these still reflected if they took place before the study time period?
Expand Is it true that donation after cardiac death (DCD) status is not accounted for in risk-adjusted expected rates?Is it true that donation after cardiac death (DCD) status is not accounted for in risk-adjusted expected rates?
Expand What does 'follow-up days reported by center' mean in CSR Tables 10 and 11?What does 'follow-up days reported by center' mean in CSR Tables 10 and 11?
Expand How are national averages calculated?How are national averages calculated?
Expand What about non-transplant-related deaths?What about non-transplant-related deaths?
Expand When comparing one-year survival rates, how do you account for the difference between a death that happens in week 1 vs. a death in week 51?When comparing one-year survival rates, how do you account for the difference between a death that happens in week 1 vs. a death in week 51?
Expand If someone receives a transplant at one center and then moves away, with follow-up treatment or death at another center, how is that outcome reflected in the reports? Why are outcomes that occur after the patient leaves the care of the transplant center attributed to that transplant center?If someone receives a transplant at one center and then moves away, with follow-up treatment or death at another center, how is that outcome reflected in the reports? Why are outcomes that occur after the patient leaves the care of the transplant center attributed to that transplant center?
Expand If patients die after transplant due to an unrelated cause (e.g., another illness or a car accident), how are these deaths counted in the center’s post-transplant patient survival rate?If patients die after transplant due to an unrelated cause (e.g., another illness or a car accident), how are these deaths counted in the center’s post-transplant patient survival rate?
Expand How are deaths reflected in the post-transplant graft survival rate?How are deaths reflected in the post-transplant graft survival rate?
Expand How are patient and graft annual survival statistics affected by the reporting of patients lost to follow-up (LTFU)?How are patient and graft annual survival statistics affected by the reporting of patients lost to follow-up (LTFU)?
Expand I understand that the SRTR uses the Kaplan-Meier method to impute outcomes for patients who have incomplete follow-up. Isn’t it dangerous to assume that the LTFU patients have similar outcomes to the followed patients?I understand that the SRTR uses the Kaplan-Meier method to impute outcomes for patients who have incomplete follow-up. Isn’t it dangerous to assume that the LTFU patients have similar outcomes to the followed patients?
Expand How frequently are the Program and OPO -Specific Report risk-adjusted models updated?How frequently are the Program and OPO -Specific Report risk-adjusted models updated?
Expand As models are updated and new covariates are added as adjustments to expected survival (e.g. DCD livers), what happens to centers that may have been previously flagged for worse than expected survival due to a larger than average experience with such transplants (i.e. expected survival would be worse using the updated models)?As models are updated and new covariates are added as adjustments to expected survival (e.g. DCD livers), what happens to centers that may have been previously flagged for worse than expected survival due to a larger than average experience with such transplants (i.e. expected survival would be worse using the updated models)?
Questions for programs completing secure site review of data
2010 Annual Report
Transplant Data
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The SRTR is administered by the Chronic Disease Research Group of the Minneapolis Medical Research Foundation,
with oversight and funding from the Health Resources and Services Administration.
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