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National Cancer Data Base - Data Dictionary PUF 2014

Chemotherapy, Days from Dx

PUF Data Item Name: 
Allowable values: 
0 – 9999
The number of days between the date of diagnosis (NAACCR Item #390) and the date on which chemotherapy at any facility was started (NAACCR Item #1220).
Registry Coding Instructions: 


Analytic Note: 

The portion of cases with unknown values for this item is higher for 2002 cases.  NCDB dropped the requirement to report systemic treatment-specific treatment dates in FORDS in 2003, and one or more registry software vendors dropped these dates from their data collection screens starting in January 2003 while a substantial proportion of 2002 cases were still being abstracted. NCDB subsequently requested vendors to submit these items if their registries were abstracting them.  However, for the cases that had already been entered, this information was not abstracted and was not submitted to NCDB.
CoC cancer programs are required to identify treatment their patients received from all sources.  Chemotherapy treatment may have occurred at any facility, or at multiple facilities, not limited to the one whose report is included in this file.  This refers to the first administration of chemotherapy for the cancer by any facility. 



0 - 9999

Number of elapsed days


Chemotherapy not administered, chemotherapy unknown, or days elapsed cannot be computed due to missing or incomplete dates