BSNUKCAN is a two-digit count variable.

00: Not in Universe
21: Top code of 21 or more
97: Unknown-Refused
98: Unknown-Not Ascertained
99: Unknown-Don't Know

Description

For sample adults with at least one biological son (BSNUM) who ever had an unknown kind of cancer (BSUKCAN), BSNUKCAN reports the number of biological sons who had ever been told they had an unknown kind of cancer. Only persons with at least one biological son (BSNUM) who ever had cancer of any kind (BSNHCAN) were asked follow-up questions about what kind(s) of cancer their son(s) had, and about the number of biological sons they had with the specified type(s) of cancer (in this case, the type of cancer is unknown).

Although BSNUKCAN is only available in 2000, the broader series of related questions about cancer "Family History" were part of both the 2000, 2005, and 2010 Cancer Modules. In all three years, this section begins with the general comment:

According to the 2000 and 2005 Field Representative's Manuals, the purpose of these family cancer history questions is to "determine the prevalence of cancer in families in the population" to "allow a greater understanding of how data obtained from genetics clinics can be applied to the general population." The 2010 Manual provides a similar rationale, stating that the collection of this data "will allow analysts a greater understanding of how family history relates to cancer."

The Manuals for all three years define "biological" relatives as people related by blood. Thus, a respondent's biological son is a son related to the respondent by blood (i.e., not a stepson, adopted son, foster son, or son-in-law).

Comparability

BSNUKCAN is only available in 2000.

Universe

Availability

• 2000

Weights

• 2000 : SAMPWEIGHT