@article{MusekampSchulerSeekatzetal.2017,
  author    = {Musekamp, Gunda and Schuler, Michael and Seekatz, Bettina and Bengel, J{\"u}rgen and Faller, Hermann and Meng, Karin},
  title     = {Does improvement in self-management skills predict improvement in quality of life and depressive symptoms? A prospective study in patients with heart failure up to one year after self-management education},
  series = {BMC Cardiovascular Disorders},
  volume    = {17},
  journal   = {BMC Cardiovascular Disorders},
  number    = {51},
  doi       = {10.1186/s12872-017-0486-5},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-157501},
  year      = {2017},
  abstract  = {Background: Heart failure (HF) patient education aims to foster patients' self-management skills. These are assumed to bring about, in turn, improvements in distal outcomes such as quality of life. The purpose of this study was to test the hypothesis that change in self-reported self-management skills observed after participation in self-management education predicts changes in physical and mental quality of life and depressive symptoms up to one year thereafter. Methods: The sample comprised 342 patients with chronic heart failure, treated in inpatient rehabilitation clinics, who received a heart failure self-management education program. Latent change modelling was used to analyze relationships between both short-term (during inpatient rehabilitation) and intermediate-term (after six months) changes in self-reported self-management skills and both intermediate-term and long-term (after twelve months) changes in physical and mental quality of life and depressive symptoms. Results: Short-term changes in self-reported self-management skills predicted intermediate-term changes in mental quality of life and long-term changes in physical quality of life. Intermediate-term changes in self-reported self-management skills predicted long-term changes in all outcomes.},
  language  = {en}
}
@article{AppelSchulerVogeletal.2017,
  author    = {Appel, Patricia and Schuler, Michael and Vogel, Heiner and Oezelsel, Amina and Faller, Hermann},
  title     = {Short Questionnaire for Workplace Analysis (KFZA): factorial validation in physicians and nurses working in hospital settings},
  series = {Journal of Occupational Medicine and Toxicology},
  volume    = {12},
  journal   = {Journal of Occupational Medicine and Toxicology},
  number    = {11},
  doi       = {10.1186/s12995-017-0157-6},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-157510},
  year      = {2017},
  abstract  = {Background: In recent years, there has been an increasing interest in psychosocial workplace risk assessments in Germany. One of the questionnaires commonly employed for this purpose is the Short Questionnaire for Workplace Analysis (KFZA). Originally, the KFZA was developed and validated for office workers. The aim of the present study was to examine the factorial validity of the KFZA when applied to hospital settings. Therefore, we examined the factorial structure of a questionnaire that contained all the original items plus an extension adding 11 questions specific to hospital workplaces and analyzed both, the original version and the extended version. Methods: We analyzed questionnaire data of a total of 1731 physicians and nurses obtained over a 10-year period. Listwise exclusion of data sets was applied to account for variations in questionnaire versions and yielded 1163 questionnaires (1095 for the extended version) remaining for factor analysis. To examine the factor structure, we conducted a principal component factor analysis. The number of factors was determined using the Kaiser criterion and scree-plot methods. Factor interpretation was based on orthogonal Varimax rotation as well as oblique rotation. Results: The Kaiser criterion revealed a 7-factor solution for the 26 items of the KFZA, accounting for 62.0\% of variance. The seven factors were named: "Social Relationships", "Job Control", "Opportunities for Participation and Professional Development", "Quantitative Work Demands", "Workplace Environment", "Variability" and "Qualitative Work Demands". The factor analysis of the 37 items of the extended version yielded a 9-factor solution. The two additional factors were named "Consequences of Strain" and "Emotional Demands". Cronbach's α ranged from 0.63 to 0.87 for these scales. Conclusions: Overall, the KFZA turned out to be applicable to hospital workers, and its content-related structure was replicated well with some limitations. However, instead of the 11 factors originally proposed for office workers, a 7-factor solution appeared to be more suitable when employed in hospitals. In particular, the items of the KFZA factor "Completeness of Task" might need adaptation for the use in hospitals. Our study contributes to the assessment of the validity of this popular instrument and should stimulate further psychometric testing.},
  language  = {en}
}