Similar demographics can hide different access

Two residents of the same age and neighborhood may differ in language, housing stability, work hours, disability access, or connection to local services. A sample can resemble the population on a few variables while still missing important experiences.

Recruitment through one trusted organization may reach its members well and others poorly.

Review the path into the assessment

Nonparticipation should not be treated as lack of concern.

Weighting has limits

Statistical weights can address aspects of a defined sampling design and some imbalances. They cannot reliably reconstruct every missing experience or repair unknown selection simply because a population total is available.

Let the gap change the claim

Additional outreach may be appropriate, or the report may need a narrower conclusion. State which perspectives are missing and how that affects interpretation.

A credible assessment is not one that claims to have heard everyone. It is one that makes a serious effort to reach relevant groups and remains honest about the people and circumstances its evidence does not adequately describe.