Illness perceptions and personality traits of patients with mental disorders: the impact of ethnicity.

OBJECTIVE: To identify differences and similarities between immigrants of Turkish origin and native German patients in therapeutically relevant dimensions such as subjective illness perceptions and personality traits. METHOD: Turkish and native German mentally disordered in-patients were interviewed in three psychiatric clinics in Hessen, Germany. The Revised Illness Perception Questionnaire (IPQ-Revised) and the Neuroticism-Extraversion-Openness Five-Factor Inventory (NEO-FFI) were used. Differences of scales and similarities by k-means cluster analyses were estimated. RESULTS: Of the 362 total patients, 227 (123 immigrants and 104 native Germans) were included. Neither demographic nor clinical differences were detected. Socioeconomic gradients and differences on IPQ-R scales were identified. For each ethnicity, the cluster analysis identified four different patient types based on NEO-FFI and IPQ-R scales. The patient types of each ethnicity appeared to be very similar in their structure, but they differed solely in the magnitude of the cluster means on included subscales according to ethnicity. CONCLUSION: When subjective illness perceptions and personality traits are considered together, basic patient types emerge independent of the ethnicity. Thus, the ethnical impact on patient types diminishes and a convergence was detected.

[Systematic assessment and improvement of medical data quality]. / Systematische Bewertung und Steigerung der Qualität medizinischer Daten.

Public health research depends on empirical information that is based on data of high quality. The aim of this study was to apply the current guidelines developed by the Technology and Methodology Platform for Networked Medical Research (TMF) for the independent assessment and enhancement of data quality. A clinical register of female breast cancer patients from two periods (N = 389 of 1996-1997 and N = 488 of 2003-2004) was used. To check the plausibility, organization, and correctness of the data quality levels, data quality indicators (DQI) were chosen, operationalized, and the variance ratios of normative-analytic-defined thresholds were calculated. Significant deviations led to data improvement, which included the commonly known source data verification (SDV). A summary data quality score was calculated before and after application of the guidelines. Eleven out of 24 DQIs were tested. Data quality systematically increased from 51.6 to 67.7%. The guidelines facilitate a systematic assessment and improvement of data quality with a reasonable use of resources. This target-oriented procedure allows for a high transparency of the available data quality, which is essential for health research.

[Methods of health economic evaluation for health services research]. / Methoden der gesundheitsökonomischen Evaluation in der Versorgungsforschung.

On August 30, 2010, the German Network for Health Services Research [Deutsches Netzwerk Versorgungsforschung e. V. (DNVF e. V.)] approved the Memorandum III "Methods for Health Services Research", supported by the member societies mentioned as authors and published in this Journal [Gesundheitswesen 2010; 72: 739-748]. The present paper focuses on methodological issues of economic evaluation of health care technologies. It complements the Memorandum III "Methods for Health Services Research", part 2. First, general methodological principles of the economic evaluations of health care technologies are outlined. In order to adequately reflect costs and outcomes of health care interventions in the routine health care, data from different sources are required (e. g., comparative efficacy or effectiveness studies, registers, administrative data, etc.). Therefore, various data sources, which might be used for economic evaluations, are presented, and their strengths and limitations are stated. Finally, the need for methodological advancement with regard to data collection and analysis and issues pertaining to communication and dissemination of results of health economic evaluations are discussed.

[Outpatient satisfaction in phoniatrics and pedaudiology]. / Zufriedenheit ambulanter Patienten in der Phoniatrie und Pädaudiologie.

BACKGROUND: The purpose of this study was the development of a standardized, reliable and valid questionnaire to evaluate outpatient satisfaction of phoniatrics and pedaudiology ambulatory care, considering specific aspects of the process and institutional features from the psychosocial point of view. DESIGN: The stress-theoretical conceptualized questionnaire with 89 single items and 3 open questions, distinguishes between practical, appraisal, emotional, informational and participational support. The survey was conducted with 91 patients. RESULTS: The questionnaire is a reliable and valid instrument for measuring outpatient satisfaction. The interclass correlations, Cronbach's alpha and Kaiser-Meyer-Olkin coefficients reached satisfactory values. Quantitative and qualitative more information about timely orientation related to operational aspects and the duration of examination and treatment, the questionnaire on the individual case history, medical instruments, examinations itself and therapy planning, all correlated with specific episodes of ambulatory care with a high degree of satisfaction. CONCLUSIONS: Patient satisfaction is one of the central outcome parameters in medicine. It describes specific strengths and weaknesses of an institution and enables external quality comparisons. For the latter more global questions are required while increasing specificity and a number of detailed items reduce the comparability with other medical providers. A reliable and valid instrument for measuring outpatient satisfaction with a high level of specificity, practicability and relative comparability can be proposed for use in phoniatrics and pedaudiology.