Survival Selection Tab

The Selection tab is used to select the records to be included in the analysis. On the Selection tab for a Survival session, there are checkboxes for standard case selections made for survival runs. In addition, selection statements may be created in the Case Selection box to reduce the number of records included in an analysis based on specific variables in the case data files. If no selection statements are made, all records in the database will be included.

When making selections, start at the top and work your way down the window.

Standard Case Selections

The Standard Case Selections box contains a set of case selection or exclusion criteria commonly associated with survival analyses. Each standard selection or exclusion can be accepted or rejected by marking or clearing its checkbox. When a new Survival Session is started, some of the standard selections or exclusions will be automatically marked. These default selections represent the standard selections most commonly used for a survival analysis.

Select Only Microscopically Confirmed

Select this option to include all cases that were microscopically confirmed. The case will be included in the analysis if the Diagnostic Confirmation variable indicates that there was microscopic confirmation of the morphology of the cancer.

Select Only Actively Followed

Select this option to include only cases that were actively pursued for follow-up information. If the Type of Follow Up variable indicates that the case was actively followed, the case will be included in the analysis.

Select Only Malignant Behavior

Select this option to include only cases with a malignant behavior. The Behavior variable is part of the morphology of cancer. The SEER program only collects information on in situ and malignant cancers. If the behavior code is malignant, the case will be included in the analysis.

Select Only Know Age

Select this option to include only cases of a known age.

Select Only Cases in Research Database

Select this option to include only cases in the selected Research Database.

Exclude All Death Certificate Only and Autopsy Only

Select this option to exclude all cases where cancer was reported through only a death certificate or autopsy. If the Type Of Reporting Source variable indicates that a death certificate or autopsy was the only source of information for the case, the case will be excluded from the analysis.

Exclusions to Match the Expected Survival Table

Exclusions required to match Expected survival data are always made when relative survival or crude probability of death using expected survival are calculated. Records with values not found in the expected survival data must be excluded.  For example, there are no expected survival data for unknown race. Therefore, case records with unknown race are excluded when using expected survival data in calculations. When you calculate survival statistics that do not use expected survival data (such as observed survival), you have the option to turn these exclusions on or off. Using these exclusions for observed survival allows you to analyze the same cohort that would be used in relative survival calculations -- assuming you are working with the same expected survival file.

Age Values Not Found in Survival Table

Select this option to exclude all cases with ages outside the boundaries of the expected survival table or with unknown ages.

Invalid Year

Select this option to exclude all cases with an unknown age date (the date at which the age was coded). In SEER, the age date is the date of diagnosis.

Values Not Found for Other survival Table Variables

Select this option to exclude all cases with a missing or unknown value for any remaining expected survival table variable (excluding age and year when age was coded). For SEER*Stat-supplied expected survival tables, the only "other" variable is race.

Select Based on Multiple Primaries

First Primary Only (Sequence Number 0 or 1)

This option includes the first tumor for each individual if that tumor matches the selection criteria and has a sequence number equal to 0 or 1. A sequence number equal to 0 indicates that it is the only tumor in an individual's history. A sequence number equal to 1 indicates that it is the first of two or more tumors in the individual's history.

First Primary Matching Selection Criteria

This option includes only the individual's first primary tumor in the database that matches the selection criteria.

All Tumors Matching Selection Criteria

This option includes all tumors that match the selection criteria. These could include multiple tumors for some individuals; however, only one record per person will contribute to any given life page. However, different tumors for an individual may contribute to separate life pages. Only the first tumor for an individual that could contribute to a given life page will be included in that life page.