Publications

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213 Publications visible to you, out of a total of 213
[Contribution of databases to regional and supra-regional quality improvement in rheumatologic treatment and patient management. Professional Society of Regional Cooperative Rheumatic Disease Centers]

Abstract (Expand)

The uniform database of the German Collaborative Arthritis Centers is an important instrument for health services research, the observation of outcomes of daily rheumatological care, and for quality … assessment in rheumatology. Deficits concerning modern medical and comprehensive therapy in non-specialized outpatient care were shown. The data give evidence of the benefits of the initiation of rheumatological care. Data of practice variation in rheumatology are used for internal quality assessment.

Author: A. Zink

Date Published: 1998

Publication Type: Journal

Incidence and prevalence of juvenile chronic arthritis in East Berlin 1980-88

Abstract (Expand)

OBJECTIVE: To estimate the incidence and prevalence rates of juvenile chronic arthritis (JCA). METHODS: The study population was children under 16 years of age living in the East Berlin area (part of … the former German Democratic Republic). By admission order that was effective up to 1990, all children with symptoms of a rheumatic disease living in the East Berlin area had to be referred to the 2nd Children’s Hospital at Berlin-Buch. This specific condition allowed us to ascertain cases from the clinical records and to calculate population rates. Based upon this data, the results of surveys with different methods of case ascertainment are compared. RESULTS: An incidence rate of 3.5 per 100,000 and a prevalence rate of 2.0 per 10,000 children were calculated. The frequency of JCA is higher for girls, with an incidence of 4.3 per 100,000 and a prevalence of 2.3 per 10,000. The figures for boys are 2.7 per 100,000 and 1.7 per 10,000, respectively. CONCLUSION: Because of the specific prerequisites, the population rates of prevalence and incidence that were based on clinical records can be regarded as valid in this study. Deviant results of other surveys can be explained by differences in the study design or in the diagnostic procedures used.

Authors: U. Kiessling, E. Doring, J. Listing, J. Meincke, M. Schontube, A. Strangfeld, A. Zink

Date Published: 1998

Publication Type: Journal

[Comparative evaluation of a German version of the Health Assessment Questionnaire and the Hannover Functional Capacity Questionnaire]

Abstract (Expand)

OBJECTIVE: To translate the Health Assessment Questionnaire Disability Index (HAQ) into a German version, to validate and to compare its properties with two different versions of the Hannover Functional … Ability Questionnaire (HFAQ) in a German speaking population. METHODS: The test-retest reliability was tested by Pearson correlation in 32 outpatients of the Department of Rheumatology of the Medizinische Hochschule Hannover. For retesting, the questionnaire was mailed to them 1 week later. To validate the questionnaire it was administered to 110 inpatients in three different hospitals. All patients fulfilled the American College of Rheumatology 1987 revised criteria of rheumatoid arthritis (RA) or the Rome criteria of definitive inactive RA. The internal consistency was measured by Cronbach’s coefficient alpha (CCA). To assess criterion validity we compared the HAQ and the two versions of the HFAQ with Keitel’s test (KT) and the modified Steinbrocker classification (mSC). Construct validity was assessed by comparing these instruments with different clinical and laboratory variables. A multivariate analysis was used to identify the most important factors that are influencing the HAQ- and HFAQ-scores. RESULTS: Test-retest reliability of the HAQ was r = 0.94. CCA was 0.91 (HAQ), 0.90 (HFAQ-P) and 0.93 (HFAQ-PR). The KT Pearson correlation coefficients reached r = -0.73 (HAQ), r = +0.74 (HFAQ-P) and r = +0.71 (HFAQ-PR). The mSC correlated r = +0.75 (HAQ), r = -0.72 (HFAQ-P) and r = -0.70 (HFAQ-PR). The correlation coefficients of HAQ/HFAQ-P was r = -0.87 and of HAQ/HFAQ-PR r = -0.88. The correlations between other clinical and laboratory variables reached from r = +/-0.58 (pain/HAQ) to r = +/-0.11 (number of swollen joints/HFAQ-PR). In backward multiple regression analysis 59-64% of the variance of disability measured by the questionnaires was explained predominantly by pain (32-33%) and by range of motion (16-21%). CONCLUSION: The German version of the HAQ presented here and the two versions of the HFAQ are reliable and valid instruments for measuring functional disability in a German-speaking population with RA. The construct measured by the HAQ and both versions of the HFAQ showed a high degree of correspondence.

Authors: J. Lautenschlager, W. Mau, T. Kohlmann, H. H. Raspe, F. Struve, W. Bruckle, H. Zeidler

Date Published: 1997

Publication Type: Misc

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