|Not an eligible housing unit
- The sample elements are out-of-sample housing units or housing units that are incorrectly listed in the address frame (e.g., housing units are outside the primary sampling unit in which they are thought to be located).
- The sample elements are non-residential units (e.g., businesses, government offices, institutions, or group quarters).
- Housing units are vacant on the date that eligibility is determined. Note: sample elements may be considered eligible non-interviews if someone is present at the housing unit on the date that eligibility is determined, even if the household has moved and the unit is vacant when the interviewer returns.
- Households are temporary, seasonal, or vacation residences (i.e., not the usual place of residence).
|No eligible respondent
- It has been determined that there is an eligible housing unit, but there is no eligible respondent in the unit. For example:
- Residence with no one 18 years of age or older.
- Respondent does not speak any of the study language(s) and the target population is explicitly defined such that respondents who do not speak the study language(s) are not considered part of the target population to which the study plans to make inferences (may also hold for physical or mental conditions, if the target population is explicitly defined to exclude persons who are blind, deaf, senile, etc.).
- Respondent died before eligibility is determined.
- Respondent is incarcerated or hospitalized (i.e., institutionalized) at the time that eligibility is determined, and remains institutionalized throughout the data collection period.
- Respondent is in a group/cell for which the quota has already been filled.
- Any other ineligible non-interview status.
- Sum of ineligible non-interviews.
- If the survey organization is unable to provide separate counts of each component but can provide the total number of ineligible non-interviews, use the total.