Representation of patients with a migration background in studies on antithrombotic treatment. An analysis of recruitment data from a cluster randomized controlled trial.

BACKGROUND: The health status, health awareness and health behavior of persons with a migration background often differ from the autochthonous population. Little is known about the proportion of patients with a migration background (PMB) that participate in primary care studies on oral antithrombotic treatment (OAT) in Germany, and whether the quality of their antithrombotic care differs from patients without a migration background. The aim of this paper was to use the results of a cluster-randomized controlled trial (PICANT) to determine the proportion of PMB at different stages of recruitment, and to compare the results in terms of sociodemographic characteristics and antithrombotic treatment. METHODS: This study used screening and baseline data from the PICANT trial on oral anticoagulation management in GP practices. For this analysis, we determined the proportion of PMB during the recruitment period at stage 1 (screening of potentially eligible patients), stage 2 (eligible patients invited to participate in the trial), and stage 3 (assessment of baseline characteristics of patients participating in the PICANT trial). In addition, we compared patients in terms of sociodemographic characteristics and quality of anticoagulant treatment. Statistical analysis comprised descriptive and bivariate analyses. RESULTS: The proportion of PMB at each recruitment stage declined from 9.1% at stage 1 to 7.9% at stage 2 and 7.3% at stage 3). A lack of German language skills led to the exclusion of half the otherwise eligible PMB. At stages 1 and 3, PMB were younger (stage 1: 70.7 vs. 75.0 years, p<0.001; stage 3: 70.2 vs. 73.5 years, p = 0.013), but did not differ in terms of gender. The quality of their anticoagulant care was comparable (100.0% vs. 99.1% were receiving appropriate OAT, 94.4% vs. 95.7% took phenprocoumon, or warfarin, and the most recent INR measurement of 60.8% vs. 69.3% was within their individual INR range). CONCLUSIONS: In the potentially eligible population and among participants at baseline, the quality of anticoagulant care was high in all groups of patients, which is reassuring. To enable the inclusion of more PMB, future primary care research on OAT in Germany should address how best to overcome language barriers. This will be challenging, particularly because the heterogeneity of PMB means the resulting sample sizes for each specific language group are small. TRIAL REGISTRATION: Current Controlled Trials ISRCTN41847489.

Colorectal cancer stage at diagnosis in migrants and non-migrants: a cross-sectional analysis of the KoMigra Study in Germany.

BACKGROUND: Colorectal cancer is one leading cause of cancer-related morbidity and mortality. Its prognosis depends largely on tumour stage at diagnosis. Migration status was associated with late stage at diagnosis in some studies, yet results are inconsistent. METHODS: The cross-sectional study "The Diagnostics of Colorectal Carcinoma in Migrants and Non-Migrants in Germany" (KoMigra) investigated the association between migration background and tumour stage of colorectal cancer at diagnosis in a large German urban area. Patient variables were collected via a survey translated into nine languages. Data on tumour stage were extracted from medical records. RESULTS: 437 patients could be recruited for analysis. Explorative logistic regression yielded no significant difference for tumour stage "I" versus "II-IV" according to the tumour classification "Union Internationale Contre le Cancer" (UICC) between migrants and non-migrants. Although the odds of a higher tumour stage were consistently higher in migrants than non-migrants, the effect estimates had wide confidence intervals. In descriptive analyses, migrants reported symptoms more often and for longer time than non-migrants. This was especially true for patients with poor proficiency of German. CONCLUSIONS: Migration background was not significantly associated with advanced tumour stage at diagnosis. However, the effect of poor language proficiency should be explored further.

The development of diabetes complications in GP-centered healthcare.

OBJECTIVES: To compare the development of diabetes complications, measured in terms of clinical end points, of patients enrolled in general practitioner (GP)-centered healthcare (Hausarztzentrierte Versorgung [HZV]) and patients in usual GP care (non-HZV) over 4 years. STUDY DESIGN: Retrospective closed cohort study based on German claims data. METHODS: The main end points in our evaluation were dialysis, blindness, amputation, stroke, myocardial infarction, cardiovascular disease, hypoglycemia, and mortality. We used Cox proportional hazards regression models for multivariable analysis. RESULTS: We included 217,964 patients in our study: 119,355 were enrolled in HZV and 98,609 were in non-HZV. Compared with non-HZV, the HZV group had a 15.6% lower risk of requiring dialysis during the 4 years of observation. Risks were also lower in the HZV group for all other end points except mortality. CONCLUSIONS: The results of the present study indicate that GP-centered healthcare is associated with a delay in the occurrence of serious diabetes complications and reduces the risk of diabetes complications. This may be because GP-centered care is associated with improved coordination of care.

Screening interval recommendations following a normal colonoscopy in individuals with a familial risk of colorectal cancer.

BACKGROUND: In view of the increased risk of developing colorectal cancer (CRC) in individuals with affected first-degree relatives (FDRs), the German evidence-based S3 guideline recommends having the first screening colonoscopy early and then, following a normal examination, repeating it at least every 10 years. The aim of this analysis was to explore colonoscopy interval recommendations in clinical practice among individuals aged < 55 years with a familial risk of CRC. METHODS: We analyzed data from the FRIDA.Frankfurt study. Patients aged 40 - 54 years with at least 1 reported FDR with CRC (excluding suspected/known hereditary cancer syndromes) and a normal colonoscopy result (no findings) were included. Data on colonoscopist recommendations for intervals between subsequent colonoscopies were extracted from colonoscopy reports. RESULTS: Of 63 reports of normal colonoscopies, 20 (32 %) did not include a recommendation on when to undergo a further colonoscopy. Of 43 reports with recommendations, 40 (93 %) suggested an interval that was shorter than the recommended maximum interval in the guideline: 1 (2 %) was for a 3-year interval, 37 (86 %) were for 5-year intervals, and 2 (5 %) were for 8-year intervals. CONCLUSIONS: Although the low number of cases limits generalizability, the results indicate that recommended intervals in clinical practice are considerably shorter than the recommended maximum interval in the guideline.

Information and Training Needs Regarding Complementary and Alternative Medicine: A Cross-sectional Study of Cancer Care Providers in Germany.

BACKGROUND: Among cancer care providers (CCPs), lack of knowledge constitutes an important barrier to the discussion of complementary and alternative medicine (CAM) use with patients. This study assessed CCPs' needs and preferences regarding CAM information and training (I&T). METHODS: An online survey was completed by 209 general practitioners, 437 medical specialists, 159 oncology nurses and medical assistants, and 244 psychologists and social workers engaged in cancer care. Latent class analysis (LCA) was used to identify subgroups of individuals with distinct preference patterns regarding I&T content. RESULTS: CCPs prefer CAM I&T to be provided as lectures, information platforms on the internet, workshops, and e-mail newsletters. Concerning subject matters, many CCPs considered CAM therapy options for the treatment of a variety of cancer disease- and therapy-related symptoms to be very important (75%-72% of the sample); the same applies to an "overview of different CAM therapies" (74%). LCA identified 5 latent classes (LCs) of CCPs. All of them attached considerable importance to "medical indication," "potential side effects," and "tips for usage." LCs differed, however, in terms of overall importance ratings, the perceived importance of "patients' reasons" for using specific CAM therapies, "case examples," and "scientific evidence." Notably, the 5 LCs were clearly present in all 4 occupational groups. CONCLUSIONS: CAM I&T should provide CCPs with an overview of different CAM therapies and show how CAM might help in treating symptoms cancer patients frequently demonstrate (eg, fatigue). Moreover, I&T programs should be flexible and take into account that individual information needs vary even within the same occupational group.

Utilization of colonoscopy and colonoscopic findings among individuals aged 40-54 years with a positive family history of colorectal cancer: a cross-sectional study in general practice.

Guidelines recommend early colonoscopy for individuals with a positive family history of colorectal cancer (CRC), but little is known about the utilization of colonoscopy and the frequency of colorectal neoplasms among younger affected individuals in Germany. The aim of this study was to determine the utilization of colonoscopy and the frequency of colorectal neoplasms in this risk group. We conducted a cross-sectional study in a general practice setting. Patients aged 40-54 years with at least one first-degree relative with CRC were identified, counseled on their increased risk, and referred to colonoscopy if they decided to undergo this procedure. We assessed the reported utilization of colonoscopy before study participation with a questionnaire and obtained results of colonoscopies performed during the study period from colonoscopy reports. Out of 484 patients with a positive family history of CRC, 191 (39.5%) fulfilled the inclusion criteria and participated in the study: 54% reported that at least one colonoscopy had been performed before study participation. Out of 191 participants, 86 (45%) underwent a colonoscopy during study period. No CRC was found, but 16.3% had any adenoma, and 7.0% had advanced adenomas. Overall, 155 (82%) study participants underwent a colonoscopy either before or during the study period. The utilization of colonoscopies among participants was remarkably high even before study participation. This rate increased up to 82% after counseling by general practitioners. A relevant number of participants had (advanced) adenomas. It appears worthwhile to involve general practitioners in identifying and counseling younger individuals with familial risk for CRC.

Frequency of a positive family history of colorectal cancer in general practice: a cross-sectional study.

BACKGROUND: Evidence on the frequency of a positive family history of colorectal cancer (CRC) among individuals aged <55 years is lacking. General practice setting might be well suited for the identification of individuals in this above-average risk group. OBJECTIVE: To determine the frequency of a reported positive family history of CRC among patients aged 40 to 54 years in a general practice setting. METHODS: We conducted a cross-sectional study in 21 general practices in Germany. Patients aged 40 to 54 years were identified by means of the practice software and interviewed by health care assistants using a standardized four-item questionnaire. Outcome was occurrence of a positive family history of CRC, defined as at least one first-degree relative (FDR: parents, siblings, or children) with CRC. Further measurements were FDRs with CRC / colorectal polyps (adenomas) diagnosed before the age of 50 and occurrence of three or more relatives with colorectal, stomach, cervical, ovarian, urethel or renal pelvic cancer. RESULTS: Out of 6723 participants, 7.2% (95% confidence interval [CI] 6.6% to 7.8%) reported at least one FDR with CRC and 1.2% (95% CI 0.9% to 1.5%) reported FDRs with CRC diagnosed before the age of 50. A further 2.6% (95% CI 2.3% to 3.0%) reported colorectal polyps in FDRs diagnosed before the age of 50 and 2.1% (95% CI 1.8% to 2.5%) reported three or more relatives with entities mentioned above. CONCLUSION: One in 14 patients reported at least one FDR with CRC. General practice should be considered when defining requirements of risk-adapted CRC screening.

Sharing Responsibilities within the General Practice Team - A Cross-Sectional Study of Task Delegation in Germany.

BACKGROUND: Expected growth in the demand for health services has generated interest in the more effective deployment of health care assistants. Programs encouraging German general practitioners (GPs) to share responsibility for care with specially qualified health care assistants in the family practice (VERAHs) have existed for several years. But no studies have been conducted on the tasks German GPs are willing to rely on specially qualified personnel to perform, what they are prepared to delegate to all non-physician practice staff and what they prefer to do themselves. METHODS: As part of an evaluation study on the deployment of VERAHs in GP-centered health care, we used a questionnaire to ask about task delegation within the practice team. From a list of tasks that VERAHs are specifically trained to carry out, GPs were asked to indicate which they actually delegate. We also asked GPs why they had employed a VERAH in their practice and for their opinions on the benefits and limitations of assigning tasks to VERAHs. The aim of the study was to find out which tasks GPs delegate to their specially qualified personnel, which they permit all HCAs to carry out, and which tasks they do not delegate at all. RESULTS: The survey was filled in and returned by 245 GPs (83%). Some tasks were exclusively delegated to VERAHs (e.g. home visits), while others were delegated to all HCAs (e.g. vaccinations). About half the GPs rated the assessment of mental health, as part of the comprehensive assessment of a patient's condition, as the sole responsibility of a GP. The possibility to delegate more complex tasks was the main reason given for employing a VERAH. Doctors said the delegation of home visits provided them with the greatest relief. CONCLUSIONS: In Germany, where GPs are solely accountable for the health care provided in their practices, experience with the transfer of responsibility to other non-physician health care personnel is still very limited. When HCAs have undergone special training, GPs seem to be prepared to delegate tasks that demand a substantial degree of know-how, such as home visits and case management. This "new" role allocation within the practice may signal a shift in the provision of health care by family practice teams in Germany.

Complementary medicine for cancer patients in general practice: qualitative interviews with german general practitioners.

BACKGROUND: The aim of this study was to investigate how general practitioners react when their cancer patients show interest in complementary medicine, and how their reaction is related to their knowledge in the field. METHODS: We conducted semi-structured interviews with 10 German general practitioners. Interviewees came from 5 different federal states and varied in terms of urban/rural setting, single/joint practice, additional certifications, gender and length of professional experience. Interviews were electronically recorded, transcribed and then analysed using qualitative content analysis according to Mayring. RESULTS: General practitioners feel largely responsible for providing information on complementary medicine to their cancer patients. However, uncertainty and a lack of knowledge concerning CAM lead mainly to reactive responses to patients' needs, and the general practitioners base their recommendations on personal experiences and attitudes. They wish to support their cancer patients and thus, in order to keep their patients' hopes up and maintain a trusting relationship, sometimes support complementary medicine, regardless of their own convictions. CONCLUSION: Although general practitioners see themselves as an important source of information on complementary medicine for their cancer patients, they also speak of their uncertainties and lack of knowledge. General practitioners would profit from training in complementary medicine enabling them to discuss this topic with their cancer patients in a proactive, open and honest manner.

Colorectal cancer stage at diagnosis in migrants versus non-migrants (KoMigra): study protocol of a cross-sectional study in Germany.

BACKGROUND: In Germany, about 20% of the total population have a migration background. Differences exist between migrants and non-migrants in terms of health care access and utilisation. Colorectal cancer is the second most common malignant tumour in Germany, and incidence, staging and survival chances depend, amongst other things, on ethnicity and lifestyle. The current study investigates whether stage at diagnosis differs between migrants and non-migrants with colorectal cancer in an area of high migration and attempts to identify factors that can explain any differences. METHODS/DESIGN: Data on tumour and migration status will be collected for 1,200 consecutive patients that have received a new, histologically verified diagnosis of colorectal cancer in a high migration area in Germany in the previous three months. The recruitment process is expected to take 16 months and will include gastroenterological private practices and certified centres for intestinal diseases. Descriptive and analytical analysis will be performed: the distribution of variables for migrants versus non-migrants and participants versus non-participants will be analysed using appropriate χ2-, t-, F- or Wilcoxon tests. Multivariable, logistic regression models will be performed, with the dependent variable being the dichotomized stage of the tumour (UICC stage I versus more advanced than UICC stage I). Odds ratios and associated 95%-confidence intervals will be calculated. Furthermore, ordered logistic regression models will be estimated, with the exact stage of the tumour at diagnosis as the dependent variable. Predictors used in the ordered logistic regression will be patient characteristics that are specific to migrants as well as patient characteristics that are not. Interaction models will be estimated in order to investigate whether the effects of patient characteristics on stage of tumour at the time of the initial diagnosis is different in migrants, compared to non-migrants. DISCUSSION: An association of migration status or other socioeconomic variables with stage at diagnosis of colorectal cancer would be an important finding with respect to equal health care access among migrants. It would point to access barriers or different symptom appraisal and, in the long term, could contribute to the development of new health care concepts for migrants. TRIAL REGISTRATION: German Clinical Trials Register DRKS00005056.

German general practitioners' views on their involvement and role in cancer care: a qualitative study.

BACKGROUND: The multidisciplinary and sequential nature of cancer care makes continuity of care for patients difficult. Cancer patients have often known their general practitioners (GPs) for years and are often in constant contact with them. Objective(s). We examined German GPs' views on their involvement in the care of cancer patients. METHODS: We conducted semi-structured interviews with 30 German GPs. Purposeful sampling was applied to secure maximum heterogeneity. Interviews were recorded, transcribed and then analyzed using qualitative content analysis according to Mayring. RESULTS: GPs perceive a clear involvement in the latter phase of cancer care but a mainly sporadic role (as and when required) in earlier phases. They think that greater care contributions from GPs are generally beneficial to cancer patients, as their ability to take the patient's history, surroundings and co-morbidities into account enables them to provide more patient-centred care. GPs want to stay involved and to know how their cancer patients are progressing, and they complain about slow or non-existent information sharing between providers, as well as insufficient care coordination. They pro-actively try to overcome these obstacles through direct contact with patients and physicians, and by building networks of trusted care providers. CONCLUSIONS: Given their long-lasting and close relationships with cancer patients, GPs are in a position to accompany them throughout the whole process of cancer care. However, such general involvement is as yet uncommon. Shared care models may have the potential to take into account the complementary character of primary and specialist care.

Involvement of general practitioners in palliative cancer care: a qualitative study.

PURPOSE: General practitioners play an important role in palliative care for cancer patients. The intensity of care and its medical complexity make palliative care a demanding task for general practitioners. This study explored general practitioners' perceptions of their involvement in palliative cancer care and the constraints they confront. METHODS: We conducted semi-structured interviews with 13 German general practitioners. Recruitment occurred by means of purposeful sampling to secure maximum heterogeneity. The interviews were electronically recorded, transcribed, and then analyzed using qualitative content analysis according to Mayring. RESULTS: A number of themes were identified. General practitioners describe being intensely involved in the final phase of their patients' lives. When providing home-based end-of-life care to cancer patients, general practitioners become aware of the limitations in their medical skills and knowledge and their ability to provide round-the-clock care. They find it helpful and satisfying to collaborate with trusted care providers and seek to cooperate with specialized palliative care services for outpatients. CONCLUSIONS: The substantial involvement of general practitioners in end-of-life care for cancer patients pushes them to their limits because of the major time commitment required, and the need for special skills for which they have received no training. It will be a challenge to provide general practitioners with the structural and personal support they need to provide home-based palliative care for their cancer patients at end of life.

Development and validation of the "FrOCK": Frankfurt observer communication checklist.

OBJECTIVES: Appropriate communication behaviour during medical consultations has been shown to improve doctor-patient relationships, and should therefore be an integral part of medical training. In Germany, though, there are almost no reliable and validated checklists for assessing communication skills during medical examinations. Our aim was to develop and validate the first German checklist to examine communication skills that can be used during examinations: the Frankfurt Observer Communication Checklist (FrOCK). METHODS: The checklist was developed according to a set of requirements that would need to be met by medical training checklists. It was pilot tested, revised and validated over several steps. Data analyses are provided for 371 assessments (371 students) by 17 examiners. After reviewing face validity and comprehensibility, we also checked for validity by comparing a trained and an untrained group of students and testing for both inter- and intrarater reliability. Interrater reliability was analysed by means of 37 interviews that were simultaneously assessed by five examiners. Intrarater reliability was calculated by having three examiners assess the same 37 students at two different points in time. RESULTS: The final version of FrOCK consists of 31 items for conducting medical interviews which can be broadly divided into four areas: "beginning and conclusion of the interview", "interview technique", "contact skills /empathy" and "history taking". Several aspects of validity could be demonstrated, and both intra- and interrater reliability were high. CONCLUSIONS: The results of this study have shown that FrOCK is a clear and concise checklist for assessing communication skills in medical examinations and one that satisfies psychometric requirements as well. It takes only 3 to 5minutes to complete and thus is particularly useful for assessing communication skills in medical examinations.

Patients' perspectives on depression case management in general practice - a qualitative study.

OBJECTIVE: General practice-based case management is effective in improving symptoms, adherence, and the perceived process of care of patients living with major depression. The aim was to explore the patients' perceptions of practice-based depression case management, their satisfaction with it and how living with depression contextualizes case management. METHODS: This qualitative study was nested in a large cluster-randomized controlled trial on the effectiveness of case management for patients living with major depression. Case management was provided over 12 months by practice-based health care assistants, who monitored symptoms. We undertook semi-structured interviews with 41 patients, then transcribed and analysed them using qualitative content analysis. RESULTS: Patients described depression as the unfortunate situation, where loneliness and lack of energy lead to being unable to actively seek help. Case management was appreciated because of regular, proactive contact and support by health care assistants. It was crucial to patients that they could trust the health care assistant. Some patients complained that case management was undertaken too mechanically and lacked empathy. CONCLUSION: Patients living with depression may perceive practice-based case management as beneficial if carried out in a trustworthy and empathetic manner. PRACTICE IMPLICATIONS: General practices should ensure that depression case management is patient-centered and non-mechanical.

The Frankfurt Patient Safety Climate Questionnaire for General Practices (FraSiK): analysis of psychometric properties.

BACKGROUND Safety culture has been identified as having a major impact on how safety is managed in healthcare. However, it has not received much attention in general practices. Hence, no instrument yet exists to assess safety climate-the measurable artefact of safety culture-in this setting. This study aims to evaluate psychometric properties of a newly developed safety climate questionnaire for use in German general practices. METHODS The existing Safety Attitudes Questionnaire, Ambulatory Version, was considerably modified and enhanced in order to be applicable in general practice. After pilot tests and its application in a random sample of 400 German practices, a first psychometric analysis led to modifications in several items. A further psychometric analysis was conducted with an additional sample of 60 practices and a response rate of 97.08%. Exploratory factor analysis with orthogonal varimax rotation was carried out and the internal consistency of the identified factors was calculated. RESULTS Nine factors emerged, representing a wide range of dimensions associated with safety culture: teamwork climate, error management, safety of clinical processes, perception of causes of errors, job satisfaction, safety of office structure, receptiveness to healthcare assistants and patients, staff perception of management, and quality and safety of medical care. Internal consistency of factors is moderate to good. CONCLUSIONS This study demonstrates the development of a patient safety climate instrument. The questionnaire displays established features of safety climate and additionally contains features that might be specific to small-scale general practices.

Classical homeopathy in the treatment of cancer patients--a prospective observational study of two independent cohorts.

BACKGROUND: Many cancer patients seek homeopathy as a complementary therapy. It has rarely been studied systematically, whether homeopathic care is of benefit for cancer patients. METHODS: We conducted a prospective observational study with cancer patients in two differently treated cohorts: one cohort with patients under complementary homeopathic treatment (HG; n = 259), and one cohort with conventionally treated cancer patients (CG; n = 380). For a direct comparison, matched pairs with patients of the same tumour entity and comparable prognosis were to be formed. Main outcome parameter: change of quality of life (FACT-G, FACIT-Sp) after 3 months. Secondary outcome parameters: change of quality of life (FACT-G, FACIT-Sp) after a year, as well as impairment by fatigue (MFI) and by anxiety and depression (HADS). RESULTS: HG: FACT-G, or FACIT-Sp, respectively improved statistically significantly in the first three months, from 75.6 (SD 14.6) to 81.1 (SD 16.9), or from 32.1 (SD 8.2) to 34.9 (SD 8.32), respectively. After 12 months, a further increase to 84.1 (SD 15.5) or 35.2 (SD 8.6) was found. Fatigue (MFI) decreased; anxiety and depression (HADS) did not change. CG: FACT-G remained constant in the first three months: 75.3 (SD 17.3) at t0, and 76.6 (SD 16.6) at t1. After 12 months, there was a slight increase to 78.9 (SD 18.1). FACIT-Sp scores improved significantly from t0 (31.0 - SD 8.9) to t1 (32.1 - SD 8.9) and declined again after a year (31.6 - SD 9.4). For fatigue, anxiety, and depression, no relevant changes were found. 120 patients of HG and 206 patients of CG met our criteria for matched-pairs selection. Due to large differences between the two patient populations, however, only 11 matched pairs could be formed. This is not sufficient for a comparative study. CONCLUSION: In our prospective study, we observed an improvement of quality of life as well as a tendency of fatigue symptoms to decrease in cancer patients under complementary homeopathic treatment. It would take considerably larger samples to find matched pairs suitable for comparison in order to establish a definite causal relation between these effects and homeopathic treatment.

A survey on worries of pregnant women--testing the German version of the Cambridge worry scale.

BACKGROUND: Pregnancy is a transition period in a woman's life characterized by increased worries and anxiety. The Cambridge Worry Scale (CWS) was developed to assess the content and extent of maternal worries in pregnancy. It has been increasingly used in studies over recent years. However, a German version has not yet been developed and validated.The aim of this study was (1) to assess the extent and content of worries in pregnancy on a sample of women in Germany using a translated and adapted version of the Cambridge Worry Scale, and (2) to evaluate the psychometric properties of the German version. METHODS: We conducted a cross-sectional study and enrolled 344 pregnant women in the federal state of Baden-Württemberg, Germany. Women filled out structured questionnaires that contained the CWS, the Spielberger-State-Trait-Anxiety Inventory (STAI), as well as questions on their obstetric history. Antenatal records were also analyzed. RESULTS: The CWS was well understood and easy to fill in. The major worries referred to the process of giving birth (CWS mean value 2.26) and the possibility that something might be wrong with the baby (1.99), followed by coping with the new baby (1.57), going to hospital (1.29) and the possibility of going into labour too early (1.28). The internal consistency of the scale (0.80) was satisfactory, and we found a four-factor structure, similar to previous studies. Tests of convergent validity showed that the German CWS represents a different construct compared with state and trait anxiety but has the desired overlap. CONCLUSIONS: The German CWS has satisfactory psychometric properties. It represents a valuable tool for use in scientific studies and is likely to be useful also to clinicians.

Comments on the article "the toxicology of mercury and its chemical compounds" by Clarkson and Magos (2006).

Clarkson and Magos (2006) provide their perspectives on the toxicology of mercury vapor and dental amalgam. As scientists who are involved in preparing a German federal guideline regarding dental amalgam, we welcome additional scientific data on this issue. However, Clarkson and Magos do not present all the relevant studies in their review. The additional data provided here show that: (a) Dental amalgam is the main source of human total mercury body burden, because individuals with amalgam have 2-12 times more mercury in their body tissues compared to individuals without amalgam; (b) there is not necessarily a correlation between mercury levels in blood, urine, or hair and in body tissues, and none of the parameters correlate with severity of symptoms; (c) the half-life of mercury deposits in brain and bone tissues could last from several years to decades, and thus mercury accumulates over time of exposure; (d) mercury, in particular mercury vapor, is known to be the most toxic nonradioactive element, and is toxic even in very low doses, and (e) some studies which conclude that amalgam fillings are safe for human beings have important methodogical flaws. Therefore, they have no value for assessing the safety of amalgam.

Elimination of xenobiotics in a female patient with fibromyalgia, chronic fatigue, and trunk obesity.

We describe the case of a 28-year-old woman, who had been suffering for more than 5 years from severe fatigue, myofascial pain, obstipation, obesity of trunk, abdominal striae, oedema, tinnitus, folliculitis, and facial swelling. The patient also showed a secondary adrenocortical insufficiency. From the anamnesis we assumed that environmental factors could account for the symptoms. The therapy consisted of dietary advise, chelating agents, supplements, and acupuncture. Under this therapy the patient became completely symptom-free. No such case has ever been reported before. We report mainly on the CAM diagnostic and therapeutic procedures, which are discussed together with the assumed pathogenetic factors.