FBNUKCAN 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 full brother who ever had an unknown kind of cancer (FBUKCAN), FBNUKCAN reports the number of full brothers who had ever been told they had an unknown kind of cancer. Only persons with at least one full brother (FBNUM) who ever had cancer of any kind (FBNHCAN) were asked follow-up questions about what kind(s) of cancer their full brother(s) had, and about the number of full brothers they had with the specified type(s) of cancer (in this case, the type of cancer is unknown).

Although FBNUKCAN 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 "full siblings" as people who have "the same biological father and mother." Thus, a respondent's full brother is a brother who has the same biological father and mother as the respondent (i.e., not half-brothers, stepbrothers, adopted brothers, foster brothers, or brothers-in-law).

Comparability

FBNUKCAN is only available in 2000.

Universe

Availability

• 2000

Weights

• 2000 : SAMPWEIGHT