In neuropsychiatric tradition, Alzheimer's disease (AD) is a clinical diagnosis that requires demonstration of a progressive memory-predominant type of dementia and exclusion of alternative causes. This simple set of criteria is neither sensitive for early clinical stages of AD since amnestic dementia only arises when the underlying neurodegeneration is fairly advanced, nor is it specific because it also occurs in other brain disorders involving the medial temporal lobe and cannot be easily distinguished from AD on clinical grounds. Efforts to identify AD before full-blown amnestic dementia develops, i.e. at a prodromal or even asymptomatic stage, and to treat the driving components of the pathology rather than its end products, are fueling the search for diagnostic indicators that unveil the neurodegeneration independently of its typical clinical manifestation. Such indicators are termed biomarkers in current technical parlance.

Background: Behavioral and psychological symptoms of dementia (BPSDs) are routinely cited as important predictors of caregiver burden and depression. Although BPSDs include a wide variety of patient behaviors, they are routinely grouped together as one construct to differentiate them from cognitive symptoms of dementia. Determining the specific BPSDs that result in increased depression and burden for caregivers may elucidate the stress process for caregivers and facilitate the development of effective interventions for caregivers.

Methods: We conducted a systematic review of English-language articles published from 1990 to 2010 to determine whether there are known symptoms or symptom clusters which exert undue negative impact on caregiver depression and burden. Additionally, we review systems used for classifying BSPD symptom clusters and determine whether there have been any mechanisms studied by which individual BPSD symptoms negatively affect caregivers. Finally, we examine how the role of timing of symptoms has been examined within the literature.

Results: Thirty-five original research articles examined the impact of an individual behavior symptom on caregiver burden or depression/depressive symptoms. The studies had no consistent system for categorizing symptoms. Although depression, aggression, and sleep disturbances were the most frequently identified patient symptoms to impact negatively on caregivers, a wide range of symptoms was associated with caregiver burden and depression.

Conclusions: The evidence is not conclusive as to whether some symptoms are more important than others. The studies reviewed were largely exploratory relative to the differential impact of individual BPSDs and did not focus on testing causal mechanisms by which specific symptoms exert more impact on caregiver mental health than others. Future research may benefit from the re-conceptualization of BPSDs from the perspective of their impact on the caregiver to examine hypothesis-driven differences among BPSD symptom clusters.

Background: Many studies have investigated factors associated with the rate of decline and evolution from mild cognitive impairment (MCI) to Alzheimer's disease (AD) dementia in elderly patients. In this analysis, we compared the rates of decline to dementia estimated from three common global measures of cognition: Mini-Mental State Examination (MMSE) score, Clinical Dementia Rating sum of boxes (CDR-SB) score, and a neuropsychological tests composite score (CS).

Methods: A total of 2,899 subjects in the National Alzheimer's Coordinating Center Uniform Data Set aged 65+ years diagnosed with amnestic mild cognitive impairment (aMCI) were included in this analysis. Population-averaged decline to dementia rates was estimated and compared for standardized MMSE, CDR-SB, and CS using Generalized Estimating Equations (GEE). Associations between rate of decline and several potential correlates of decline were also calculated and compared across measures.

Results: The CDR-SB had the steepest estimated slope, with a decline of 0.49 standard deviations (SD) per year, followed by the MMSE with 0.22 SD per year, and finally the CS with 0.07 SD per year. The rate of decline of the three measures differed significantly in a global test for differences (p < 0.0001). Age at visit, body mass index (BMI) at visit, Apolipoprotein E (APOE) ɛ4 allele status, and race (black vs. white) had significantly different relationships with rate of decline in a global test for difference among the three measures.

Conclusions: These results suggest that both the rate of decline and the effects of AD risk factors on decline to dementia can vary depending on the evaluative measure used.

Background: Several observational studies have suggested a link between health status and rate of decline among individuals with Alzheimer's disease (AD). We sought to quantify the relationship in a population-based study of incident AD, and to compare global comorbidity ratings to counts of comorbid conditions and medications as predictors of AD progression.

Methods: This was a case-only cohort study arising from a population-based longitudinal study of memory and aging, in Cache County, Utah. Participants comprised 335 individuals with incident AD followed for up to 11 years. Patient descriptors included sex, age, education, dementia duration at baseline, and APOE genotype. Measures of health status made at each visit included the General Medical Health Rating (GMHR), number of comorbid medical conditions, and number of non-psychiatric medications. Dementia outcomes included the Mini-Mental State Examination (MMSE), Clinical Dementia Rating – sum of boxes (CDR-sb), and the Neuropsychiatric Inventory (NPI).

Results: Health status tended to fluctuate over time within individuals. None of the baseline medical variables (GMHR, comorbidities, and non-psychiatric medications) was associated with differences in rates of decline in longitudinal linear mixed effects models. Over time, low GMHR ratings, but not comorbidities or medications, were associated with poorer outcomes (MMSE: β = –1.07 p = 0.01; CDR-sb: β = 1.79 p < 0.001; NPI: β = 4.57 p = 0.01).

Conclusions: Given that time-varying GMHR, but not baseline GMHR, was associated with the outcomes, it seems likely that there is a dynamic relationship between medical and cognitive health. GMHR is a more sensitive measure of health than simple counts of comorbidities or medications. Since health status is a potentially modifiable risk factor, further study is warranted.

Background: Despite the need for community services to support the intensive levels of care provided by dementia family caregivers, findings consistently indicate low rates of service utilization. This study aims to explore the extent of service use and examine the factors that may influence the use of services in a sample of family caregivers of Persons With Dementia (PWD).

Methods: Two hundred and seventy-two family caregivers completed a questionnaire assessing caregiver burden, knowledge and use of services, dementia severity, frequency of problem behaviors and socio-demographic characteristics.

Results: The rate of service use was modest with 39.9% using any of the available services. Reasons for non-use included lack of time (26.2%), perceived lack of need (18.5%), and presence of domestic help (21%). Separate regression models were evaluated to identify factors associated with caregiver service use and PWD service-use. Caregiver employment status (OR = 0.53, CI = 0.30–0.94) and knowledge of available services (OR = 4.22, CI = 2.23–7.98) contributed significantly to the model distinguishing caregiver service users from non-users. Knowledge of available services (OR = 2.14, CI = 1.23–3.71) was the only significant predictor of service use targeted at the PWD.

Conclusions: Given that knowledge significantly increased the odds of service use, strategies should be designed to raise awareness about the availability of dementia support services in the community and provide a deeper understanding about the value of such services. Future research should employ larger sample sizes and explore factors not measured in this study that might potentially better explain use of services.

Background: Large-scale nationwide data describing the end-of-life characteristics of older people with dementia are lacking. This paper describes the dying process and end-of-life care provided to elderly people with mild or severe dementia in Belgium. It compares with elderly people dying without dementia.

Methods: A nationwide retrospective mortality study was conducted, via representative network of general practitioners (GPs) in 2008 in Belgium, with weekly registration of all deaths (aged ≥ 65) using a standardized form. GPs reported on diagnosis and severity of dementia, aspects of end-of-life care and communication, and on the last week of life in terms of symptoms that caused distress as judged by the GP, and the patients’ physical and cognitive abilities.

Results: Thirty-one percent of our sample (1,108 deaths) had dementia (43% mildly, 57% severely). Of those, 26% died suddenly, 59% in care home, and 74% received palliative treatment, versus 37%, 19%, and 55% in people without dementia. GP–patient conversations were less frequent among those with (45%) than those without (73%) dementia, and 11% of both groups had a proxy decision-maker. During the last week of life, physical and psychological distress was common in both groups. Of older people with dementia, 83% were incapable of decision-making and 83% were bedridden; both significantly higher percentages than found in the group without dementia (24% and 52%).

Conclusions: Several areas of end-of-life care provision could be improved. Early communication and exploration of wishes and appointment of proxy decision-makers are important components of an early palliative care approach which appears to be initiated too infrequently.

Background: With rapid aging, Singapore faces an increasing proportion of the population with age-related dementia. We used system dynamics methodology to estimate the number and proportion of people with mild, moderate, and severe dementia in future years and to examine the impact of changing family composition on their likely living arrangements.

Methods: A system dynamics model was constructed to estimate resident population, drawing birth and mortality rates from census data. We simulate future mild, moderate, and severe dementia prevalence matched with estimates of total dementia prevalence for the Asian region that includes Singapore. Then, integrating a submodel in which family size trends were projected based on fertility rates with tendencies for dependent elderly adults with dementia to live with family members, we estimate likely living arrangements of the future population of individuals with dementia.

Results: Though lower than other previous estimates, our simulation results indicate an increase in the number and proportion of people in Singapore with severe dementia. This and the concurrent decrease in family size point to an increasing number of individuals with dementia unlikely to live at home.

Conclusions: The momenta of demographic and illness trends portend a higher number of individuals with dementia less likely to be cared for at home by family members. Traditions of care for frail elderly found in the diverse cultures of Singapore will be increasingly difficult to sustain, and care options that accommodate these demographic shifts are urgently needed.

Background: This paper provides an overview of the findings from the dementia module of the 2010 Northern Ireland Life and Times (NILT) Survey: an annual survey recording public attitudes to major social policy issues. Northern Ireland, in line with many other developed countries, recently released a Dementia Strategy. The opportunity to explore the knowledge and attitudes of the general public to dementia at a national level in Northern Ireland is timely and valuable. This paper reports on an initial exploration of these attitudes, based on bivariate analysis across demographic groups.

Methods: Data were analyzed using SPSS (Version 19). Descriptive and summary statistics were produced. A series of categorical bivariate relationships were tested (chi-square) and tests of association (Cramer's V) were reported. We discuss both knowledge-related findings and attitudinal findings.

Results: We found that the general public in Northern Ireland have a reasonably good level of knowledge about dementia. However, attitudinal measures indicate the stereotyping and infantilization of people with dementia.

Conclusions: This NILT module provides a unique source of data on attitudes to, and knowledge of, dementia. A key strength is that it provides statistically representative data with national level coverage. This information can be used to target public health education policies more effectively and to inform delivery of health and social services. The success of the module leads us to believe that it stands as a blue-print for collecting information on dementia in other social surveys.

Background: We assessed the association between medical illness burden and anxiety symptoms, hypothesizing that greater illness burden would be associated with symptoms of anxiety, and that optimism would buffer, while pessimism would exacerbate, this relationship.

Methods: We recruited 109 older adults, aged 65 years and older, from primary care and geriatric clinics to participate in this cross-sectional, interview-based study. Participants completed the Snaith Clinical Anxiety Scale and the Life Orientation Test – Revised, a measure of optimism/pessimism. A physician-rated measure of illness burden, the Cumulative Illness Rating Scale, was also administered.

Results: Supporting our hypotheses, greater levels of overall optimism weakened, and pessimism strengthened, the association between illness burden and anxiety symptoms, after accounting for the effects of demographic, cognitive, functional, and psychological covariates.

Conclusions: Bolstering positive and reducing negative future expectancies may aid in the prevention of psychological distress in medically ill older adults. Therapeutic strategies to enhance optimism and reduce pessimism, which may be well-suited to primary care and other medical settings, and to which older adults may be particularly amenable, may contribute to reduced health-related anxiety.

Background: This study aimed to determine: (1) the prevalence of depression, anxiety, and depression associated with anxiety (DA); (2) the risk factor profile of depression, anxiety, and DA; (3) the course of depression, anxiety, and DA over 24 months.

Methods: Two-year longitudinal study of 20,036 adults aged 60+ years. We used the Patient Health Questionnaire and the Hospital Anxiety and Depression Scale anxiety subscale to establish the presence of depression and anxiety, and standard procedures to collect demographic, lifestyle, psychosocial, and clinical data.

Results: The prevalence of anxiety, depression, and DA was 4.7%, 1.4%, and 1.8%. About 57% of depression cases showed evidence of comorbid anxiety, while only 28% of those with clinically significant anxiety had concurrent depression. There was not only an overlap in the distribution of risk factors in these diagnostic groups but also differences. We found that 31%, 23%, and 35% of older adults with anxiety, depression, and DA showed persistence of symptoms after two years. Repeated anxiety was more common in women and repeated depression in men. Socioeconomic stressors were common in repeated DA.

Conclusions: Clinically significant anxiety and depression are distinct conditions that frequently coexist in later life; when they appear together, older adults endure a more chronic course of illness.

Background: Previous studies have shown that the presence of depressive symptoms among older persons was evidently associated with subsequent physical and functional decline. However, few studies have directly examined the impact of changes in depressive symptoms or depressed mood on changes in functional ability. The present prospective study examined whether changes in the levels and remission of depressive symptoms were associated with changes in functional ability among community-living older persons who were treated for depressive symptoms in a primary care setting.

Methods: Older persons aged 60 and above with depressive symptoms (N = 267) were followed up in a primary care treatment program over 12 months. Geriatric Depression Scale (GDS-15), and instrumental and basic activities of daily living (IADL and ADL) were measured at baseline and at 12-month follow-up. The associations of GDS change scores and conversion to non-depressed status with ADL and IADL change scores, controlling for baseline covariates including chronic medical comorbidity and Mini-Mental State Examination (MMSE), were examined in multiple regression analyses.

Results: An improvement in GDS scores (baseline score minus 12-month score) was significantly associated with improvement (12-month score minus baseline score) in ADL (β = 0.355, p < 0.001) and IADL scores (β = 0.165, p = 0.018) after adjusting for baseline functional status, MMSE, chronic medical comorbidities, and other variables. In particular, conversion in GDS status to “non-depressive” state (GDS ≤4) was associated with an improvement in ADL change scores (β = 0.281, p = 0.019).

Conclusion: In depressed older persons, an improvement in depressive symptoms was associated with improved functional ability.

Background: Depression is a common and treatable illness in late-life. However, many do not seek treatment and may suffer from the stigma of the illness, which may vary across cultures. The aim of this study was to compare attitudes about depression in primary care practices in South Korea, Russia, and the USA.

Methods: A cross-sectional study was undertaken using a self-administered questionnaire and PHQ-9 diagnostic survey with 1,094 patients aged 60–93 years who attended a primary care clinic in Korea, Russia, or the USA.

Results: The mean age of participants was 71 years, with 61% being female. US patients were older and had higher education levels. Russian participants were more likely to be widowed and had lower self-rated health. The majority of participants agreed that depression is a kind of disease (Korea 77%, Russia 61%, USA 79%). Only 6% of US patients believed depression means a person is weak, compared to 78% (Korea) and 61% (Russia). Fewer US patients endorsed depression as a normal part of aging (29% vs. Korea at 42% and Russia at 54%). Among participants in the USA, age correlated negatively with endorsement of a medical model of depression (p = <0.001).

Conclusions: Though there was wide variation between countries in attitudes about depression, the majority of each endorsed items reflected a medical model of depression. Korean and Russian participants endorsed the view of depression as a personal weakness more than participants in the USA. Demographic correlates of negative attitudes about depression were moderate to weak.

Background: The study was undertaken to describe the frequency of HIV-associated neurocognitive disorders (HAND) and depressive symptoms in an older population with human immunodeficiency virus (HIV).

Methods: A cross-sectional analysis of patients aged 50 years or older infected with HIV was carried out in an outpatient setting in Brazil from March to November 2008. Patients selected were submitted to cognitive evaluation using the Mini-Mental State Examination and International HIV Dementia Scale, and also to functional and depression evaluations.

Results: Among the 52 patients evaluated, the frequency of neurocognitive disorder was 36.5%, while for dementia the frequency was 13.5%. No risk factors were identified. Among the patients with cognitive impairment, 73.7% had cortical impairment. The frequency of depressive symptoms was of 34.6%. The female gender was identified as a risk factor (p = 0.018) and patients with depressive symptoms had greater functional impairment (p < 0.001).

Conclusion: HAND and depressive symptoms are common in an older population. Patients with cognitive impairment achieved lower scores on the cortical assessment scales. Depressive symptoms are a stronger factor for functional impairment.

Background: Cognitive impairment and depression are common and disabling non-motor symptoms of Parkinson's disease (PD). Previous studies have shown associations between them but the nature of the relationship remains unclear. In chronic illness, problem- or task-oriented coping strategies are associated with better outcome but often require higher level cognitive functioning. The present study investigated, in a sample of patients with PD, the relationships between cognitive function, choice of coping strategies, and a broad index of outcome including depression, anxiety, and health-related quality of life (QoL). It was hypothesized that the coping strategy used could mediate the association between cognition and outcome.

Methods: 347 participants completed the Coping Inventory for Stressful Situations, the Hospital Anxiety and Depression Scale, the Parkinson's Disease Questionnaire-8, the Unified Parkinson's Disease Rating Scale, and the Addenbrooke's Cognitive Examination–Revised. Structural Equation Modeling was used to test the hypothesized model of cognition, coping, and outcome based on a direct association between cognition and outcome and an indirect association mediated by coping.

Results: Overall, poorer cognition predicted less use of task-oriented coping, which predicted worse outcome (a latent variable comprised of higher depression and anxiety and lower QoL). The analyses suggested a small indirect effect of cognition on outcome mediated by coping.

Conclusions: The findings suggest that patients who fail to employ task-oriented coping strategies may be at greater risk of depression, anxiety, and poor health-related QoL. Even mild to moderate cognitive impairment may contribute to reduced use of task-oriented coping. Suitably adapted cognitive–behavioral approaches may be useful to enable the use of adaptive coping strategies in such patients.

Background: Increasing out-of-pocket health expenditure among older people worsens the inequitable access to essential health services in low and middle-income countries (LMIC). We investigated various socioeconomic and health factors associated with out-of-pocket and catastrophic health expenditures among rural older people in India.

Methods: We recruited 1,000 participants aged above 65 years from Kaniyambadi block, Vellore, India. We assessed their out-of-pocket health expenditure, health service utilization, socioeconomic profiles, disability, cognition, and health status by standard instruments. We employed appropriate multivariate statistics evaluating these determinants.

Results: Male gender, poor sanitation, diabetes, tuberculosis, malaria, respiratory ailments, gastrointestinal diseases, dementia, depression, and disability were associated with higher out-of-pocket expenditures. Illiteracy, tuberculosis, diabetes, and dementia increased the risk for catastrophic health expenditures, while pension schemes protected against it. Income inequalities were associated with inequities on education, disease prevalence, and access to safe water, sanitation, and nutrition.

Conclusions: Interactions between determinants of out-of-pocket health expenditure, economic inequality, and inequities on essential health care delivery to older people are complex. We highlight the need for equitable health services and policies, focusing on both medical and social determinants.

Background: Attitudes are known to exert a powerful influence on a range of behaviors. The objective of this study was to investigate the contribution of attitudes toward one's own aging to satisfaction with life and physical and mental health measured in a sample of community-dwelling older adults.

Methods: Adults who were part of a larger study of health and well-being in rural and regional Australia aged ≥60 years (N = 421) completed a cross-sectional postal survey comprising the Attitudes to Aging Questionnaire, the 12-Item Short Form Health Survey (SF-12), the Satisfaction with Life Scale, the Geriatric Anxiety Inventory, and the Center for Epidemiological Studies Depression Scale.

Results: Overall, attitudes to aging were positive in this sample. More positive attitudes to aging were associated with higher levels of satisfaction with life, better self-report physical and mental health on the SF-12, and lower levels of anxiety and depression, after controlling for confounding variables. Better financial status and being employed were both associated with more positive attitudes to aging and better self-reported physical health. Relationship status was also significantly associated with mental health and satisfaction with life, but not physical health.

Conclusion: The promotion of successful aging is increasingly becoming important in aging societies. Having positive attitudes to aging may contribute to healthier mental and physical outcomes in older adults. Overcoming negative stereotypes of aging through change at the societal and individual level may help to promote more successful aging.

Background: Little research has examined the diagnostic utility and factor structure of commonly used posttraumatic stress disorder (PTSD) assessment instruments in older persons.

Methods: A total of 206 adults aged 60 or older (mean age = 69 years; range = 60–92), who resided in the Galveston Bay area when Hurricane Ike struck in September 2008, completed a computer-assisted telephone interview two–five months after this disaster. Using the PTSD Checklist (PCL), PTSD symptoms were assessed related both to this disaster and to participants’ worst lifetime traumatic event. Total PCL scores were compared to PCL-based, Diagnostic and Statistical Manual of Mental Disorders, 4th edition (DSM-IV)-derived probable diagnoses of PTSD to determine optimal cut scores. Confirmatory factor analyses (CFAs) were conducted to evaluate PTSD symptom structure.

Results: Receiver operating characteristic analyses indicated that a PCL score of 39 achieved optimal sensitivity and specificity in assessing a PCL-based, algorithm-derived DSM-IV diagnosis of worst event-related PTSD; and that a score of 37 optimally assessed probable Ike-related PTSD. CFAs revealed that a recently proposed five-factor model – comprised of re-experiencing, avoidance, numbing, dysphoric arousal, and anxious arousal factors – provided a better fitting representation of both worst event- and disaster-related PTSD symptoms than alternative models. Current Ike-related anxious arousal symptoms demonstrated a significantly stronger association with current generalized anxiety than depressive symptoms, thereby supporting the construct validity of this five-factor model of PTSD symptomatology.

Conclusions: A PCL score of 37 to 39 may help identify probable PTSD in older persons. The expression of PTSD symptoms in older adults may be best characterized by a recently proposed five-factor model with distinct dysphoric arousal and anxious arousal clusters.

The occurrence of mania in the geriatric population is rare. Furthermore, there were only six case reports of elderly patients with secondary mania resulting from treatment with cholinesterase inhibitors. In all cases, patients had a prior psychiatric history. We report the case of an elderly patient with no prior history of psychiatric or other organic disorders who experienced first episode mania following treatment with rivastigmine. We discuss the possible mechanism of mania in this patient.

Over recent years in the UK, emphasis has been placed on appropriate diagnosis and referral of patients with dementia. In guidelines published by the British Geriatrics Society (BGS) and Faculty of Old Age Psychiatrists consensus group (Forsyth et al., 2006), a cognitive screening algorithm was developed, which consists of initial screening for cognitive impairment with the Mini-Mental State Examination (MMSE) and CLOX1 (an executive clock drawing task). If the scores meet cut-off points indicated in the algorithm (MMSE <24 or CLOX1 <11), further assessments with the Confusion Assessment Method (CAM) and the Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE) are applied with the aim to differentiate between delirium (CAM positive, IQCODE negative), delirium and chronic impairment (CAM positive, IQCODE positive), or chronic cognitive impairment (CAM negative, IQCODE positive).