[GP-centered health care in Baden-Württemberg, Germany: Results of a quantitative and qualitative evaluation]

GP-centered health care ("Hausarztzentrierte Versorgung", HzV)-the terms of which are described in § 73b of the Social Code Book V-came into effect in Baden-Württemberg, Germany, on 1 July 2008. The HzV is aimed at enhancing health care for patients with chronic diseases and complex health care needs (e.g., those requiring long-term care).

On the basis of four working packages (WP I-WP IV), the present paper examines the impact that GP-centered health care has had on patients insured by the "AOK" regional sickness fund and their GPs. WP I addresses the association between HzV participation and the corresponding health care utilization of patients on the basis of claims data. WP II looks at any changes that GPs and patients noticed were potentially attributable to HzV participation. WP III focuses on health care assistants in primary care ("Versorgungsassistenten in der Hausarztpraxis", VERAH). These assistants play a special role within the framework of the HzV. WP IV analyzes the quality of health care for patients aged 65 years and over, also on the basis of claims data.

A mixed methods design was used for this evaluation, and quantitative and qualitative approaches taken. This design enabled insights into the implementation of the HzV in regular health care to be obtained from different perspectives.

Numerous positive associations between HzV participation and the variables of interest were observed for all WPs. These are presented in detail in the paper.

The results obtained so far clearly support the continuation of HzV and associated evaluations.