Questionnaire Dwelling Unit-Level and Person Pair-Level Sampling ...

Appendix O: Rules for Determining Pair Relationships
O.1 Rules for Determining Matching Pairs, in Priority Order
The following rules are used to determine the roster member in a respondent's household
roster that corresponds to the other pair member. In these rules, an "age match" occurs if the
questionnaire age of one pair member matches a roster age in the other pair member's roster, and
a "gender match" occurs if the questionnaire gender of one of the pair members matches a roster
gender in the other pair member's roster. In the table below, if the rules for Pair Member A and
Pair Member B in a single row differ, then the count for that row includes the rules as listed, and
the rules with Pair Member A and Pair Member B are reversed. If the age and/or gender are off
when finding these matches, the age and/or gender are defined by the questionnaire age and
gender of the selected pair member when determining the pair domain. The rules, called priority
conditions because of their hierarchical nature, are listed in priority order in Table O.1, along
with the number of pairs to which each rule was applied. Since the 2001 survey, it was
technically impossible to identify more than one roster member as the "other pair member
selected," resulting in either 0 or 1 MBRSEL for each responding pair. Rules involving situations
where more than one MBRSEL existed are therefore not included in this table. Some other
conditions that were not evident in 2006 also are excluded from this table, provided the
distribution of counts would have been unaffected by their exclusion from the code.
Table O.1 Rules for Determining Matching Pairs, in Priority Order
Priority
Rule
Condition Pair Member A Pair Member B Count
1 Age and gender match exactly,
exactly one MBRSEL in right place
2 Age and gender match exactly,
exactly one MBRSEL in right place
3 Age within one, gender matches
exactly, exactly one MBRSEL in
right place
4 Age and gender match exactly,
exactly one MBRSEL in right place
5 Age within one, gender matches
exactly, exactly one MBRSEL in
right place
6 Age within two, gender matches
exactly, exactly one MBRSEL in
right place
Age and gender match exactly,
exactly one MBRSEL in right place
Age within one, gender matches
exactly, exactly one MBRSEL in
right place
Age within one, gender matches
exactly, exactly one MBRSEL in
right place
Age within two, gender matches
exactly, exactly one MBRSEL in
right place
Age within two, gender matches
exactly, exactly one MBRSEL in
right place
Age within two, gender matches
exactly, exactly one MBRSEL in
right place
16,590
2,160
131
276
34
10
O-3