Description
For persons in households who reported using this type of toilet, PIPEUNKNOWNFRQ reports how often they use a flush toilet as a toilet facility, taking into account only regular household practices. This variable differs from PIPESEWERFRQ, PIPESEPTICFRQ, and PIPEOTHERFRQ in that the respondent did not know what type of system (sewer, septic, other) the flush toilet was connected to.
The question associated with this variable was included in the household questionnaire.
