National and International Comparisons of Gynecological Research in Germany Based on a Bibliometric Analysis of Publications.

Background: Recent years have seen a considerable shift from male doctors to female doctors in the field of gynecology. Female doctors are traditionally more involved with planning and maintaining their family. For gynecology, this could be associated with a risk that research activities will decrease, particularly if results are published in scientific journals. Methods: In view of this shift, a comparative observational study was carried for 2022 in which 1306 publications were matched to 1786 female and male doctors reported on the websites of the 44 locations of university gynecology departments in Germany. In addition, the volume of publications issued between 2014 and 2022 was compared for Germany, France, the United Kingdom, and the United States. In Germany, the volume of publications in Gynecology was additionally compared with the publication outputs of the specialties Urology and Trauma Surgery. Results: Since 2014, the increase in the numbers of publications in the field of Gynecology in Germany was lower (225%) than that of the countries with which it was compared (238%/252%/260% for F/UK/USA). When Gynecology was compared with other medical specialties in Germany, the number of publications in Urology were found to have increased at a lower rate (196%) while the number of publications in the field of Trauma Surgery increased by more (286%) than that of Gynecology. At the start of 2023, the percentage of women who were working as doctors at the lowest hierarchical level (junior doctor) was 81%. The publication output per capita of female doctors working at lower levels in the medical hierarchy, i.e., working as junior doctors and senior physicians, was between 40% and 80% lower than that of male doctors working at the same level. However, female directors published as much as male directors did. In the lower hierarchy levels, men were up to 14% more likely to be without an academic title. Predictors for more extensive publication activities by young female and male doctors include the extent and quality of publications by doctors in senior positions, the presence of a comprehensive cancer center or an institute for human genetics at the location where the young doctors were working, and joint publications with foreign authors. Conclusion: For the German Society of Gynecology and Obstetrics, the results suggest a number of approaches to promote young researchers. The support provided to young female doctors is especially important as this should help to retain them as junior researchers over the long term.

The bone evaluation study (BEST): patient care and persistence to treatment of osteoporosis in Germany.

OBJECTIVE: Data on fracture frequency and medical care of patients with osteoporosis are still insufficient. We aimed to analyze frequency of osteoporosis-related fractures and multiple fractures, re-fracture rates, treatment prevalence, and persistence to osteoporosis-related medication in Germany. METHODS AND MATERIALS: Using claims data of a state health insurer (2006 - 2009), we performed a retrospective "real world" analysis. Inclusion criteria were age of 50 years or older and an osteoporosis diagnosis or a prescription for defined osteoporosis-related medication. We assessed fractures, frequencies, and the number of multiple fractures per patient as well as time to follow-up fracture and drug persistence using Kaplan-Meier analysis. RESULTS: Within the observation period, 27% of the osteoporosis patients sustained fractures; of those with fractures, 69% had multiple fractures. For patients with multiple fractures, re-fracture rate after 360 days was between 69% for patients who received parathyroid hormone and 85% for patients who received no anti-osteoporotic medication 360 days before follow-up fracture. In the patient population, persistence rates after 1 year were between 58% for parathyroid hormone and 2% for other osteoporosis-specific drugs (alfacalcidol, fluorides, nandrolone, calcitonin). CONCLUSIONS: In Germany, the number of patients with osteoporosis-attributable fractures is high. There are still deficits in proper treatment as well as in drug persistence. Low persistence lead to a relatively high proportion of patients with follow-up fractures.

The epidemiology of osteoporosis--Bone Evaluation Study (BEST): an analysis of routine health insurance data.

BACKGROUND: Osteoporosis is a widespread disease of the skeleton that becomes more common with advancing age. Its prevalence is still inadequately documented. The goal of this study is to determine how common osteoporosis is in Germany. METHODS: The routine billing data of a large statutory health insurance carrier in Germany (the TK company) from the years 2006 to 2009 were anonymized and retrospectively analyzed. Insurees aged 50 and above with osteoporosis were identified either from their bearing the diagnosis of osteoporosis or of osteoporosis-related fractures, or from their having received prescription medication for osteoporosis. The prevalence and incidence of osteoporosis and the frequency of osteoporotic fractures were calculated for TK insurees and extrapolated to the overall German population. RESULTS: The prevalence of osteoporosis among persons aged 50 and above, as revealed by diagnoses of osteoporosis or osteoporotic fractures, or by the prescription of medication for osteoporosis, was found to be 14% (240,657 of 1.7 million insurees) in the year 2009; the sex-specific prevalence was 24% in women and 6% in men. An extrapolation of these figures implies that 6.3 million persons in Germany have osteoporosis. The incidence of osteoporosis in the same age group, as revealed by a diagnosis of osteoporosis or prescription of medication for osteoporosis, was found to be 2.1% per year, with 104,528 insurees having an index event for osteoporosis (initial diagnosis of osteoporosis or first prescription of a medication for osteoporosis). An extrapolation of this figure implies that 885,000 persons newly develop osteoporosis in Germany each year. Over the period of observation, 52% of the affected persons (total, 172,473 persons) sustained fractures, many of which were multiple. CONCLUSION: Osteoporosis is still common in Germany. The large number of insurees with single and multiple fractures implies that the treatment of this disease in Germany needs to be improved.

Influence on persistence and adherence with oral bisphosphonates on fracture rates in osteoporosis.

BACKGROUND AND AIM: Oral bisphosphonates have been shown to reduce the risk of fractures in patients with osteoporosis. It can be assumed that the clinical effectiveness of oral bisphosphonates depends on persistence with therapy. METHODS: The influence of persistence with and adherence to oral bisphosphonates on fracture risk in a real-life setting was investigated. Data from 4451 patients with a defined index prescription of bisphosphonates were included. Fracture rates within 180, 360, and 720 days after index prescription were compared between persistent and non-persistent patients. In an extended Cox regression model applying multiple event analysis, the influence of adherence was analyzed. Persistence was defined as the duration of continuous therapy; adherence was measured in terms of the medication possession ratio (MPR). RESULTS: In patients with a fracture before index prescription, fracture rates were reduced by 29% (p = 0.025) comparing persistent and non-persistent patients within 180 days after the index prescription and by 45% (p < 0.001) within 360 days. The extended Cox regression model showed that good adherence (MPR >/= 0.8) reduced fracture risk by about 39% (HR 0.61, 95% CI 0.47-0.78; p < 0.01). CONCLUSIONS: In patients with osteoporosis-related fractures, good persistence and adherence to oral bisphosphonates reduced fracture risk significantly.

Future relevance of genetic testing: a systematic horizon scanning analysis.

OBJECTIVES: The aim of this study was to identify research and development on genetic testing to find out if research addresses important disease areas, how far it is from potential clinical use, and what consequences might arise for the prioritization of health technology assessment (HTA) activities. Also a horizon scanning methodology developed in Germany is demonstrated. METHODS: A systematic search on genetic testing was conducted in an innovation database (ZIM database). Based on a daily monitoring of literature and Internet sources, reports from 2003 up to 2005 were classified related to the type of innovation, the addressed disease categories, and the developmental phase of the technology. More detailed analyses for the most frequently addressed groups of diseases were conducted. RESULTS: From 239 relevant reports, 41 percent referred to neoplasms; 10 percent to diseases of the cardiovascular system; 9 percent to diseases of the nervous system; 7 percent to mental and behavioral disorders; and 5 percent to endocrine, nutritional, and metabolic diseases. A total of 69 percent of research is situated in basic preclinical research, 22 percent in clinical/experimental research, and 6 percent are genetic tests being used. Diagnostic applications were most frequently reported (28 percent), followed by therapeutic prediction (22 percent), preventive prediction (18 percent), pharmacogenetics (16 percent), and screening (16 percent). CONCLUSIONS: Widespread diseases are frequently addressed in research. HTA on genetic testing might focus on innovations addressing neoplastic diseases (in particular breast, colon, and prostate cancers) and pharmacogenetic applications for therapeutic prediction. The horizon scanning approach seems useful in the early steps of HTA processes to identify emerging new technologies that might have significant impact on future health care.

Risk assessment in diabetes management: how do general practitioners estimate risks due to diabetes?

OBJECTIVES: To evaluate the ability of general practitioners (GPs) in Germany to estimate the risk of patients with diabetes developing complications. METHODS: An interview study using a structured questionnaire to estimate risks of four case vignettes having diabetes-specific complications within the next 10 years, risk reduction and life expectancy potential. A representative random sample of 584 GPs has been drawn, of which 150 could be interviewed. We compared GPs' estimates among each other (intraclass correlation coefficient (ICC) and Cohen's (multirater-) kappa) and with risks for long-term complications generated by the multifactor disease model "Mellibase", which is a knowledge-based support system for medical decision management. RESULTS: The risk estimates by GPs varied widely (ICC 0.21 95% CI (0.13 to 0.36)). The average level of potential risk reduction was between 47% and 70%. Compared with Mellibase values, on average, the GPs overestimated the risk threefold. Mean estimates of potential prolongation of life expectancy were close to 10 years for each patient, whereas the Mellibase calculations ranged from 3 to 10 years. CONCLUSIONS: Overestimation could lead to unnecessary care and waste of resources.

The impact of pharmaceuticals on the decline of cardiovascular mortality in Germany.

PURPOSE: The effect of innovative medicines and surgical interventions on the decline of (cardiovascular) mortality is often called into question. The increase in general economic prosperity is often seen as the main reason for the continuous increase in life expectancy. The purpose of this study is to investigate the extent to which mortality from cardiovascular diseases has been affected by pharmaceuticals and other medical interventions over the last 30 years in Germany. METHODS: Main outcome measures were the time series of direct method death rates (DMDR) of cardiovascular and non-cardiovascular mortalities. To control for socioeconomic and secular trends the difference between both time series was calculated. The impact of interventions on mortality was analysed by developing two linear regression models: The onset model analyses whether the introduction of interventions influences mortality or not. The consumption model estimates the quantitative impact of interventions in two phases. RESULTS: Cardiovascular mortality as a percentage of total mortality fell from 40 to 38% over the study period. All investigated interventions had statistically significant effects on the decline of cardiovascular diseases, which is expressed by the standardised regression coefficient: onset model: preventive behaviour index (PBI) -8.3, angioplasty/CABG -0.6, antithrombotic agents -1.5, diuretics -0.9, beta-blockers -1.0, calcium channel blockers -0.8 and ACE inhibitors -1.1 (all interventions p < 0.01); consumption model: innovative drugs phase I -7.5 (p = 0.017), innovative drugs phase II -6.9 (p < 0.01), PBI -13.1 (p < 0.01) and angioplasty/CABG -9.9 (p < 0.01). CONCLUSIONS: All innovative drug classes and surgical interventions had a positive effect on the decline of cardiovascular mortality.

Comparison of the effects of diclofenac or other non-steroidal anti-inflammatory drugs (NSAIDs) and diclofenac or other NSAIDs in combination with proton pump inhibitors (PPI) on hospitalisation due to peptic ulcer disease.

PURPOSE: Up to 25% of patients taking non-steroidal anti-inflammatory drugs (NSAIDs) chronically experience gastrointestinal side effects. This report aims to determine the gastroprotective effects of proton pump inhibitors (PPI) in patients taking NSAIDs, especially diclofenac. METHODS: From the claims database of a German sickness fund with 1.4 million beneficiaries, we used data from patients enrolled in the health plan continuously from 2000 until 2004 with an inpatient diagnosis of peptic ulcer disease in 2003 and 2004. For our nested case-control study, we matched these cases for calendar time with up to 10 controls per case. Our main outcome measure were the adjusted odds ratios (ORs) for peptic ulcer disease associated with diclofenac and other NSAIDs. RESULTS: In the study population of 752 613 beneficiaries, 979 cases and 10 319 controls were identified. A stratified analysis according to the prescription of diclofenac alone or in combination with PPI showed that diclofenac prescriptions increased the risk for hospitalisation due to peptic ulcer significantly (adjusted OR 2.4 [95%CI 1.94, 3.05]). If PPI were prescribed concomitantly with diclofenac, we observed a risk reduction (OR 1.3 [95%CI 0.7, 2.3]). The significance of the PPI effect was shown using an interaction term in a regression model without stratification, where a risk reduction of 60% (OR 0.4 [95%CI 0.2, 0.7], p < 0.05) was found. CONCLUSIONS: The concomitant prescription of PPI and diclofenac decreases the hospitalisation risk due to peptic ulcer significantly. The results support the use of PPI as gastroprotective agents in patients who receive NSAIDs.

Do health-related labour costs weaken the competitiveness of the economy?

BACKGROUND: At least in Germany, it is widely assumed that healthcare-related labour costs weaken the competitiveness of national industries. However, there is a lack of knowledge about the amount of employers' financial burden in Germany and in other competing countries, as well as the impact on market prices of German goods. OBJECTIVE: To quantify the health-related labour costs for employers in seven countries and different industries, and identify the effects of current reforms in Germany on the financial burden of employers. METHODS: We calculated the spending on health in Germany and the burden on German employers (by branch of production). We then compared the total burden with that of six other countries. A univariate analysis was then conducted to examine the connection between health-related labour costs and employment. RESULTS: In 2000, employers paid 41.2% of the total of 283.3 billion spent on health matters in Germany. These total costs account for 3.2% of the gross output (UK: 1.8%, Switzerland: 1.9%, Poland: 2.1%, US: 3.2%, France: 3.6%, The Netherlands: 3.7%). Health-related labour costs account for 10.6% of the total labour costs. The health-related labour costs per employee are on average 3013 (from 2752 to 4793 in healthcare and the chemical industry, respectively). In the UK and the US there are corresponding labour costs of 1836 and 4256 per employee, respectively. The current health reform (2003) would reduce the labour costs by only 0.7% after 4 years (based on 2000, with all factors remaining constant). Employment increased by 3.7% from 1995 to 2000 (textile industry: -26.8%, vehicle manufacture: +18.3%). There is no empirical connection between employment and health-related labour costs. Labour costs increased by a higher amount than the health-related labour costs. CONCLUSIONS: The burden on German employers is moderate when compared internationally. The current reform of the German health system is not expected to improve companies' financial situation or German competitiveness. Restrictions on the range of medical services would provide a relatively small amount of relief for employers.

Risk and potential risk reduction in diabetes type 2 patients in Germany.

Avoiding serious complications such as stroke, myocardial infarction, and amputations in diabetes patients is the main interest of long-term treatment. Given the considerable prevalence of diabetes type 2 in industrialized countries this is a major public health concern as well as a burden to health care systems. The present study estimated the current risk of major complications occurring in the German diabetes type 2 population and explored the potential for further risk reduction. Risk reduction can be achieved when physiological and behavioral parameters (HbAlc, blood pressure, cholesterol level, body mass index, smoking) are set to target values recommended in guidelines. To estimate individual risk and potential risk reduction the multifactor disease model Mellibase was employed. Data were obtained from the German Health Survey of 1998, which includes a sample of 7,124 individuals representative of the German population. The survey shows a prevalence rate of 6.3% for diabetes type 2 in persons older than 35 years. The analyses reveal that the overall potential for risk reduction is moderate (e.g., the average reduction potential of the 10-year risk of stroke is 5.7%). A majority of parameter ranges found in the patient population are either already close to the recommended values (HbA1c), are not alarmingly higher than in the general population (blood pressure) or have little impact on risk reduction. In addition nonmodifiable risk factors such as duration of the illness and advanced age constrain possible improvements. However, there is a wide variation in the actual risk between individuals (e.g., the 10-year risk of stroke varies between 2.2% and 79.8%), and thus a wide variation in potential risk reduction (the risk reduction potential for stroke varies between 0% and 53.4%). Intensified treatment should therefore (a) focus on relevant subgroups of patients taking their risk reduction potential into account and (b) aim at improvement in the overall metabolic profile rather than concentrating on single risk factors.

Resource use and treatment costs after kidney transplantation: impact of demographic factors, comorbidities, and complications.

BACKGROUND: Our goal was to quantify outcomes, resource use, and treatment costs for the first 2 years after renal transplantation in a "real-life" European setting and to assess the impact of preoperative risk factors and postoperative complications on treatment costs. METHODS: Inpatient and outpatient records of all patients who received a renal transplant at Medizinische Hochschule Hannover, Germany, between January 1998 and July 2000, were evaluated. Key clinical events were recorded. Direct costs were calculated for primary hospitalization, the remainder of year 1, and year 2 after transplantation. Cost of organ procurement, pretransplant care, and transplant surgery were excluded. Cost consequences for key clinical events were determined. RESULTS: Of 204 patients undergoing transplantation, 195 and 149 completed 1 year and 2 years of follow-up, respectively. The outcomes of years 1 and 2, respectively, were as follows: graft failure, 5.4%, 0.7%; acute rejection, 35.9%, 5.4%; cytomegalovirus (CMV) infection, 29.2%, 2.0%; and delayed graft function, 30.9%. Costs for primary hospitalization, the remainder of year 1, and year 2 averaged Euro 15,380, Euro 18,636, and Euro 14,484, respectively. Cost-driving events included graft failure Euro 36,228), acute rejection (Euro 9,638), delayed graft function (Euro7,359), and CMV infection (Euro 4,149). Graft failure and acute rejection for year 1 also added significantly to the costs for year 2. CONCLUSIONS: These results show that posttransplant clinical outcomes result in a significant increase in treatment costs. Because the economic impact of primary causes of chronic rejection (acute rejection and CMV) and delayed graft function is substantial, careful selection of the most appropriate immunosuppressive regimen is essential.