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NIH
U.S. National Institutes of Health National Cancer Institute

AJCC Cancer Staging

Variable Documentation

For Derived AJCC 6th and 7th Editions, refer to the Collaborative Stage (CS) web site links below by data submission year:

SEER Required CS Site Specific Factors (SSF)

The spreadsheet is color coded to designate the items required by SEER for staging (red), clinically significant (green) for CSv2 and those data items collected since CSv1 (blue). SSF that are shaded gray were made obsolete in CSv2 and may or may not be shown depending on the reason they were obsoleted. With a couple of exceptions, only those SSF collected since CSv1 or needed for staging AJCC 6th edition or Summary Stage are on the research file.