Anja Wollny

Prediction of Dementia by Subjective Memory Impairment Effects of Severity and Temporal Association With Cognitive Impairment

CONTEXT Subjective memory impairment (SMI) is receiving increasing attention as a pre-mild cognitive impairment (MCI) condition in the course of the clinical manifestation of Alzheimer disease (AD). OBJECTIVES To determine the risk for conversion to any dementia, dementia in AD, or vascular dementia by SMI, graded by the level of SMI-related worry and by the temporal association of SMI and subsequent MCI. DESIGN Longitudinal cohort study with follow-up examinations at 1(1/2) and 3 years after baseline. SETTING Primary care medical record registry sample. PARTICIPANTS A total of 2415 subjects without cognitive impairment 75 years or older in the German Study on Aging, Cognition and Dementia in Primary Care Patients. MAIN OUTCOME MEASURES Conversion to any dementia, dementia in AD, or vascular dementia at follow-up 1 or follow-up 2 predicted by SMI with or without worry at baseline and at follow-up 2 predicted by different courses of SMI at baseline and MCI at follow-up 1. RESULTS In the first analysis, SMI with worry at baseline was associated with greatest risk for conversion to any dementia (hazard ratio [HR], 3.53; 95% confidence interval [CI], 2.07-6.03) or dementia in AD (6.54; 2.82-15.20) at follow-up 1 or follow-up 2. The sensitivity was 69.0% and the specificity was 74.3% conversion to dementia in AD. In the second analysis, SMI at baseline and MCI at follow-up 1 were associated with greatest risk for conversion to any dementia (odds ratio [OR], 8.92; 95% CI, 3.69-21.60) or dementia in AD (19.33; 5.29-70.81) at follow-up 2. Furthermore, SMI at baseline and amnestic MCI at follow-up 1 increased the risk for conversion to any dementia (OR, 29.24; 95% CI, 8.75-97.78) or dementia in AD (60.28; 12.23-297.10), with a sensitivity of 66.7% and a specificity of 98.3% for conversion to dementia in AD. CONCLUSION The prediction of dementia in AD by SMI with subsequent amnestic MCI supports the model of a consecutive 3-stage clinical manifestation of AD from SMI via MCI to dementia.

Risk factors for incident mild cognitive impairment – results from the German Study on Ageing, Cognition and Dementia in Primary Care Patients (AgeCoDe)

Luck T, Riedel‐Heller SG, Luppa M, Wiese B, Wollny A, Wagner M, Bickel H, Weyerer S, Pentzek M, Haller F, Moesch E, Werle J, Eisele M, Maier W, van den Bussche H, Kaduszkiewicz H for the AgeCoDe Study Group. Risk factors for incident mild cognitive impairment – results from the German Study on Ageing, Cognition and Dementia in Primary Care Patients (AgeCoDe).

Motivational Reserve: Motivation-Related Occupational Abilities and Risk of Mild Cognitive Impairment and Alzheimer Disease

Midlife motivational abilities, that is, skills to initiate and persevere in the implementation of goals, have been related to mental and physical health, but their association with risk of mild cognitive impairment (MCI) and Alzheimers disease (AD) has not yet been directly investigated. This relation was examined with data from the German Study on Ageing, Cognition, and Dementia in Primary Care Patients (AgeCoDe). A total of 3,327 nondemented participants (50.3% of a randomly selected sample) aged 75-89 years were recruited in primary care and followed up twice (after 1.5 and 3 years). Motivation-related occupational abilities were estimated on the basis of the main occupation (assessed at follow-up II) using the Occupational Information Network (O* NET) database, which provides detailed information on worker characteristics and abilities. Cox proportional hazards models were used to evaluate the relative risk of developing MCI and AD in relation to motivation-related occupational abilities, adjusting for various covariates. Over the 3 years of follow-up, 15.2% participants developed MCI and 3.0% developed AD. In a fully adjusted model, motivation-related occupational abilities were found to be associated with a reduced risk of MCI (HR: 0.77; 95% CI: 0.64-0.92). Motivation-related occupational abilities were associated with reduced risk of AD in ApoE ε4 carriers (HR: 0.48; CI: 0.25-0.91), but not in noncarriers (HR: 0.99; CI: 0.65-1.53). These results suggest that midlife motivational abilities are associated with reduced risk of MCI in general and with reduced risk of AD in ApoE ε4 carriers. Revealing the mechanisms underlying this association may inform novel prevention strategies for decelerating cognitive decline in old age.

Are patients with dementia treated as well as patients without dementia for hypertension, diabetes, and hyperlipidaemia?

BACKGROUND Patients suffering from dementia are at risk of being treated differently by GPs from patients without it. Explanations for this could be stigmatisation, treatment with a palliative approach, and the result of the disease process. AIM To ascertain whether patients with dementia are treated differently, the index diseases of hypertension, diabetes, and hyperlipidaemia were used to measure care. DESIGN OF STUDY Retrospective matched control study. SETTING German general practice. METHOD Sixteen GP practices recruited all their patients with dementia and at least one of the index diseases. Patients without dementia but only the index diseases were matched for age, sex, index disease, and practice, resulting in 216 pairs of patients with and without dementia. From the files, blood pressure, blood sugar/glycated haemoglobin, cholesterol, the dates of measurement, the number of doctor-patient contacts, and the prescribed medication to treat the three conditions under scrutiny were documented. For analysis, t-tests and χ(2)-tests were used. RESULTS No differences were found in treatment outcomes between the two patients groups, except one significant difference: one of the two documented systolic blood pressure values is lower in the dementia group. Furthermore, patients with dementia more often do not receive any medication or are treated with low-priced medications for hypertension (nearly significant). CONCLUSION GPs do not seem to treat patients with dementia differently. The use of lower-priced antihypertensive medication could be the only indication for some kind of difference in approach.

Cued Recall and Other Cognitive Tasks to Facilitate Dementia Recognition in Primary Care

To compare the accuracy of commonly used tasks with that of the Visual Association Test (VAT), a conceptually different test involving cued recall of pictorial stimuli, in the recognition of dementia within primary care.

Improvement of primary health care of patients with poorly regulated diabetes mellitus type 2 using shared decision-making – the DEBATE trial

BackgroundSince 2004, a national Disease Management Program (DMP) has been implemented in Germany, which includes educational measures aimed at patients with type-2 diabetes (T2D). However, about 15-20% of T2D patients remain in poor metabolic control. Qualitative research shows that one reason for this might be an increasing frustration of general practitioners (GPs) with the management of their poorly regulated T2D patients over time. We aim at approaching this problem by improving the GP-patient-communication and fostering shared decision-making.Methods/DesignAn educative intervention will be tested within a multi-centred cluster-randomized controlled trial (RCT) in Germany. We include 20 GPs in three regions. Each of the 60 GPs will recruit about 13 patients meeting the inclusion criteria (total of 780 patients). GPs allocated to the intervention group will receive a peer-visit from a specifically trained GP-colleague who will motivate them to apply patient-centred communication techniques including patient-centred decision aids. GPs allocated to the control group will not take part in any intervention program, but will provide care as usual to their patients. The primary inclusion criterion for patients at the time of the recruitment is an HbA1c-level of over 8.0. Primary outcome is the change of HbA1c at 6, 12, 18, and 24 months compared to HbA1c at baseline. Secondary outcomes include patient’s participation in the process of shared decision-making and quality of life.DiscussionIf this intervention proves to be effective it may be integrated into the existing Disease Management Program for T2D in Germany.

The Assessment of Changes in Cognitive Functioning: Age-, Education-, and Gender-Specific Reliable Change Indices for Older Adults Tested on the CERAD-NP Battery: Results of the German Study on Ageing, Cognition, and Dementia in Primary Care Patients (AgeCoDe)

OBJECTIVES The Consortium to Establish a Registry for Alzheimers Disease-Neuropsychological (CERAD-NP) battery represents a commonly used neuropsychological instrument to measure cognitive functioning in the elderly. This study provides normative data for changes in cognitive function that normally occur in cognitively healthy individuals to interpret changes in CERAD-NP test scores over longer time periods. DESIGN Longitudinal cohort study with three assessments at 1.5-year intervals over a period of 3 years. SETTING : Primary care medical record registry sample. PARTICIPANTS As part of the German Study on Ageing, Cognition, and Dementia in Primary Care Patients, a sample of 1,450 cognitively healthy general practitioner patients, age 75 years and older, was assessed. MEASUREMENTS Age-, education-, and gender-specific Reliable Change Indices (RCIs) were computed for a 90% confidence interval for selected subtests of the CERAD-NP battery. RESULTS Across different age, education, and gender subgroups, changes from at least six to nine points in Verbal Fluency, four to eight points in Word List Memory, two to four points in Word List Recall, and one to four points in Word List Recognition indicated significant (i.e. reliable) changes in CERAD-NP test scores at the 90% confidence level. Furthermore, the calculation of RCIs for individual patients is demonstrated. CONCLUSIONS Smaller changes in CERAD-NP test scores can be interpreted with only high uncertainty because of probable measurement error, practice effects, and normal age-related cognitive decline. This study, for the first time, provides age-, education-, and gender-specific CERAD-NP reference values on the basis of RCI methods for the interpretation of cognitive changes in older-age groups.

Optimizing polypharmacy among elderly hospital patients with chronic diseases--study protocol of the cluster randomized controlled POLITE-RCT trial.

BackgroundTreatment of patients with multimorbidity is challenging. A rational reduction of long-term drugs can lead to decreased mortality, less acute hospital treatment, and a reduction of costs. Simplification of drug treatment schemes is also related to higher levels of patient satisfaction and adherence. The POLITE-RCT trial will test the effectiveness of an intervention aiming at reducing the number of prescribed long-term drugs among multimorbid and chronically ill patients. The intervention focuses on the interface between primary and secondary health care and includes a pharmacist-based, patient-centered medication review prior to the patients discharge from hospital.MethodsThe POLITE-RCT trial is a cluster randomized controlled trial. Two major secondary health care providers of Mecklenburg-Western Pomerania, Germany, take part in the study. Clusters are wards of both medical centers. All wards where patients with chronic diseases and multimorbidity are regularly treated will be included. Patients aged 65+ years who take five or more prescribed long-term drugs and who are likely to spend at least 5 days in the participating hospitals will be recruited and included consecutively. Cluster-randomization takes place after a six-month baseline data collection period. Patients of the control group receive care as usual. The independent two main primary outcomes are (1) health-related quality of life (EQ-5D) and (2) the difference in the number of prescribed long-term pharmaceutical agents between intervention and control group. The secondary outcomes are appropriateness of prescribed medication (PRISCUS list, Beers Criteria, MAI), patient satisfaction (TSQM), patient empowerment (PEF-FB-9), patient autonomy (IADL), falls, re-hospitalization, and death. The points of measurement are at admission to (T0) and discharge from hospital (T1) as well as 6 and 12 months after discharge from the hospital (T2 and T3). In 42 wards, 1,626 patients will be recruited.DiscussionIn case of positive evaluation, the proposed study will provide evidence for a sustainable reduction of polypharmacy by enhancing patient-centeredness and patient autonomy.Trial registrationCurrent Controlled Trials ISRCTN42003273

Converting habits of antibiotic prescribing for respiratory tract infections in German primary care--the cluster-randomized controlled CHANGE-2 trial.

BackgroundWith an average prescription rate of 50%, in German primary care antibiotics are still too frequently prescribed for respiratory tract infections. The over-prescription of antibiotics is often explained by perceived patient pressure and fears of a complicated disease progression. The CHANGE-2 trial will test the effectiveness of two interventions to reduce the rate of inappropriate antibiotic prescriptions for adults and children suffering from respiratory tract infections in German primary care.Methods/DesignThe study is a three-arm cluster-randomized controlled trial that measures antibiotic prescription rates over three successive winter periods and reverts to administrative data of the German statutory health insurance company AOK. More than 30,000 patients in two regions of Germany, who visit their general practitioner or pediatrician for respiratory tract infections will be included. Interventions are: A) communication training for general practitioners and pediatricians and B) intervention A plus point-of-care testing. Both interventions are tested against usual care. Outcome measure is the physicians’ antibiotic prescription rate for respiratory tract infections derived from data of the health insurance company AOK. Secondary outcomes include reconsultation rate, complications, and hospital admissions.DiscussionMajor aim of the study is to improve the process of decision-making and to ensure that patients who are likely to benefit from antibiotics are treated accordingly. Our approach is simple to implement and might be used rapidly among general practitioners and pediatricians. We expect the results of this trial to have major impact on antibiotic prescription strategies and practices in Germany, both among general practitioners and pediatricians.Trial registrationThe study is registered at the Current Controlled Trials Ltd (ISRCTN01559032)

Awareness of local dementia services among general practitioners with academic affiliation

Background and aims: Cooperation with specialized services is one important resource for general practitioners (GPs) in managing dementia patients and caregivers. Methods: In a questionnaire study among GPs involved in university teaching (n=137) we asked if GPs knew of four types of local dementia services. A linear regression analysis was conducted to find associations with GPs’ awareness. Results: Day care services could be named by over two-thirds of GPs, patient support groups by nearly half, carer support groups and memory clinics by only 40%. Greater awareness of services was associated with better theoretical knowledge of dementia and GP practices in urban areas. Conclusions: In the light of the specificity of our GP sample, our results display remarkably poor awareness of institutions caring for demented patients and their relatives. A more active approach in acquainting GPs with dementia services, especially in rural areas, may enhance awareness and cooperation.