%0 Journal Article %@ 1929-0748 %I JMIR Publications %V 11 %N 9 %P e37965 %T A Care Concept of Community Health Nursing Interventions for Adults With Chronic Health Conditions in an Urban Area: Protocol for a Randomized Controlled Field Trial (CoSta Study) %A Nock,Annike Morgane %A Iversen,Linda %A Waidhas,Lukas %A Zapf,Antonia %A Seifert,Caroline %A Petersen-Ewert,Corinna %+ Department of Nursing and Management, Hamburg University of Applied Sciences, Campus Alexanderstraße, Alexanderstraße 1, Hamburg, 20099, Germany, 49 40 428 757128, Annike.Nock@haw-hamburg.de %K community health nursing %K chronic health conditions %K randomized controlled trial %K community-based program %K health-related quality of life %K nurse-led consultation %K nursing %K nurse %K intervention %K urban %K protocol %K Germany %K adults %D 2022 %7 28.9.2022 %9 Protocol %J JMIR Res Protoc %G English %X Background: Implementing community health nursing programs is a new field of application in the primary health sector of Germany. Hence, there is limited evidence of effective community-based and nurse-led interventions with regard to the German health care system. International research findings are mostly not transferable. The Community Health Nursing in der Stadt (CoSta; ie, “Community Health Nursing in the City”) project is the first study that examines a community health nurse–led intervention for adults with chronic health conditions. Objective: This study protocol describes the design and methods of a randomized controlled field trial that will investigate if a community health nurse–based intervention has an impact on health-related quality of life in adults with chronic conditions. Methods: The study was designed as a randomized controlled trial that will be conducted under real-life conditions in the field. In a 4-month period, patients with at least 1 chronic International Classification of Diseases, Tenth Revision, diagnosis will be enrolled. Participants will be randomly allocated to an intervention group or a control group. The sample size was assumed based on an effect size of 0.50 with a significance level of .05, using a 2-sided (2-tailed), 2-sample unequal variance t test. The control group will be treated as usual. The intervention group will receive—in addition to the usual treatment—preventive home visits; consultations; and educative training, which will be offered by 2 community health nurses for up to 12 months. Both groups will be followed up at baseline, after 6 months, and after 12 months. The primary outcome measure is the mental component summary score from the 36-Item Short Form Health Survey after 12-months. Secondary patient outcomes will be included. The study received ethics approval from the Competence Health Center’s institutional review board at the University of Applied Sciences Hamburg (procedure number: 2020-14). Results: The CoSta project was funded by the Federal Ministry of Education and Research Germany (contract number: 13FH019SX8). In total, 187 participants were recruited at the beginning of August 2021. Further, 92 were excluded and 94 were randomized. Data collection will be conducted until the end of 2022. Conclusions: Our study will provide data with regard to the effectiveness of community nurse–led interventions that focus on the treatment of vulnerable adults with chronic health conditions in a community health center. In secondary analyses, the associations among influencing social factors (education, income, and employment) will be examined. We expect results that will help reduce the research-to-practice gap. Trial Registration: German Clinical Trials Register DRKS00026164; https://tinyurl.com/yckxc5ut International Registered Report Identifier (IRRID): DERR1-10.2196/37965 %M 36170005 %R 10.2196/37965 %U https://www.researchprotocols.org/2022/9/e37965 %U https://doi.org/10.2196/37965 %U http://www.ncbi.nlm.nih.gov/pubmed/36170005