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BMC Health Services Research
Published in: BMC Health Services Research 1/2011

Open Access 01-12-2011 | Study protocol

Operationalizing multimorbidity and autonomy for health services research in aging populations - the OMAHA study

Authors: Martin Holzhausen, Judith Fuchs, Markus Busch, Andrea Ernert, Julia Six-Merker, Hildtraud Knopf, Ulfert Hapke, Beate Gaertner, Ina Kurzawe-Seitz, Roswitha Dietzel, Nadine Schödel, Justus Welke, Juliane Wiskott, Matthias Wetzstein, Peter Martus, Christa Scheidt-Nave

Published in: BMC Health Services Research | Issue 1/2011

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Abstract

Background

As part of a Berlin-based research consortium on health in old age, the OMAHA (Operationalizing Multimorbidity and Autonomy for Health Services Research in Aging Populations) study aims to develop a conceptual framework and a set of standardized instruments and indicators for continuous monitoring of multimorbidity and associated health care needs in the population 65 years and older.

Methods/Design

OMAHA is a longitudinal epidemiological study including a comprehensive assessment at baseline and at 12-month follow-up as well as brief intermediate telephone interviews at 6 and 18 months. In order to evaluate different sampling procedures and modes of data collection, the study is conducted in two different population-based samples of men and women aged 65 years and older. A geographically defined sample was recruited from an age and sex stratified random sample from the register of residents in Berlin-Mitte (Berlin OMAHA study cohort, n = 299) for assessment by face-to-face interview and examination. A larger nationwide sample (German OMAHA study cohort, n = 730) was recruited for assessment by telephone interview among participants in previous German Telephone Health Surveys. In both cohorts, we successfully applied a multi-dimensional set of instruments to assess multimorbidity, functional disability in daily life, autonomy, quality of life (QoL), health care services utilization, personal and social resources as well as socio-demographic and biographical context variables. Response rates considerably varied between the Berlin and German OMAHA study cohorts (22.8% vs. 59.7%), whereas completeness of follow-up at month 12 was comparably high in both cohorts (82.9% vs. 81.2%).

Discussion

The OMAHA study offers a wide spectrum of data concerning health, functioning, social involvement, psychological well-being, and cognitive capacity in community-dwelling older people in Germany. Results from the study will add to methodological and content-specific discourses on human resources for maintaining quality of life and autonomy throughout old age, even in the face of multiple health complaints.
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Metadata
Title
Operationalizing multimorbidity and autonomy for health services research in aging populations - the OMAHA study
Authors
Martin Holzhausen
Judith Fuchs
Markus Busch
Andrea Ernert
Julia Six-Merker
Hildtraud Knopf
Ulfert Hapke
Beate Gaertner
Ina Kurzawe-Seitz
Roswitha Dietzel
Nadine Schödel
Justus Welke
Juliane Wiskott
Matthias Wetzstein
Peter Martus
Christa Scheidt-Nave
Publication date
01-12-2011
Publisher
BioMed Central
Published in
BMC Health Services Research / Issue 1/2011
Electronic ISSN: 1472-6963
DOI
https://doi.org/10.1186/1472-6963-11-47

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