I’m having a hard time understanding the HHTYPE variable, particularly category 9 “HHTYPE could not be determined.” My understanding is that this variable is created by IPUMS to mirror a var that Census created, and that this undetermined category is largely made up of household heads with unmarried partners.
Are there some cases when an unmarried household head, living with an unmarried partner and a related child are considered family households, and classified either as single male, single female, or married couple households?
This part of the documentation is throwing me off: “ Family households with no spouse present include household heads of all marital statuses except married, spouse present (see MARST). Households where an unmarried partner is present are classified as family households only if there are other persons in the household who are related to the household head by birth, marriage, or adoption.” Then, there is a warning on another page of the codebook saying “With the inclusion of unmarried partners in the [SPLOC] pointer variable, HHTYPE ends up being set to 9 “HHTYPE could not be determined” in 1990-onward samples if a householder is linked to an unmarried partner."
Thank you in advance!