Morbidity in responders and non-responders in a register-based population survey.

<bold>Background: </bold>Non-response analysis is often restricted to the influence of age, sex and socio-economic status on response status. In this study the health status of responders and non-responders was also compared.<bold>Results: </bold>Responders were comparable to non-responders with regard to the number of diagnosed disorders as well as to the prevalences of disorders within body systems. Non-responders only showed psychological disorders more often.<bold>Conclusion: </bold>It is useful to assess the relation between non-response and morbidity patterns in other studies as well, in order to detect selective non-response and bias. [ABSTRACT FROM AUTHOR]