- Description
 - Codes
 - Comparability
 - Universe
 - Availability
 - Questionnaire Text
 - Flags
 - Source Variables
 - Editing Procedure
 
Description
SPRULE_HIST reports why the IPUMS variable SPLOC linked the person to a probable spouse in samples prior to 1970. IPUMS establishes spouse-spouse links according to seven basic rules, and SPRULE reports the number of the rule for the link in question. If a link could be made according to more than one rule, the lowest-numbered rule was applied. See "Family Interrelationships" and New IPUMS Family Interrelationship Variables for more information.
The following codes are included in SPRULE_HIST:
0 =  	No spouse of this person present in household.
1 =  	A married woman and a married man were linked because she was listed immediately after him on the form and both persons' relationship to the household head/householder, when compared with one another, justified a link. The following pairings justified links:
| Head/Householder | Wife/Husband | 
| Son | Daughter-in-law | 
| Daughter | Son-in-law | 
| Father | Mother | 
| Father-in-law | Mother-in-law | 
| Brother | Sister-in-law | 
| Brother-in-law | Sister |