Introduction: Symptom amelioration in older patients with very late onset schizophrenia-like psychosis (VLOSLP) is often difficult, with limited psychotropic response reports yielding variable findings. Information about atypical (second generation) antipsychotic use in this population is scant.

Methods: A consecutive sample of geriatric psychiatry outpatients and inpatients with psychotic disorders were retrospectively identified over a 31-month period based on systematic information abstraction from an electronic medical record (e-record). After exclusion criteria were applied, 8/138 outpatients and 13/362 inpatients met inclusion criteria for VLOSLP and had been naturalistically treated with an atypical antipsychotic during hospitalization or nine months of outpatient care. Mandatorily completed e-record standardized symptom severity response ratings were converted into positive treatment response thresholds.

Results: 38% of outpatients and 77% of inpatients (mean age = 76 years for both groups; mean age of onset of psychosis = 70 years for outpatients and 74 years for inpatients) met criteria for positive treatment response to an atypical antipsychotic (either aripiprazole, olanzapine, quetiapine, or risperidone) with sign/symptom amelioration, rather than eradication.

Conclusions: Various atypical antipsychotics at geriatric doses yielded a positive treatment response in nearly two-thirds of VLOSLP patients. Patients with less chronic, more severe symptoms responded at a higher rate. Prospective, double-blind, placebo-controlled trials with representative subject samples are needed to validate these preliminary findings.

Background: The objective of this study was to investigate the relationship between social network and cognitive decline, taking into account the potential bias of reverse causality.

Methods: The study sample comprised 2055 elderly participants without dementia. We assessed baseline social functioning across four variables: size of social network, satisfaction with relationships, perception of being understood, and participation in social activities. A neuropsychological battery was proposed at baseline and repeated throughout follow-up. Linear mixed models were used to investigate the relationship between social network and baseline cognitive performances and cognitive decline during the 20-year follow-up.

Results: When controlling for the reverse causality bias by excluding participants who developed dementia during the study follow-up and after adjusting for covariates, the results showed that better social functioning at baseline was associated with better initial performances in the Isaacs Set Test and the Wechsler Paired Associate Test. However, there was no significant association with further cognitive decline. By contrast, when the bias of reverse causality was not controlled for (i.e. no exclusion of participants who developed dementia), the association between social network and global cognitive decline measured by MMSE was found to be statistically significant.

Conclusion: With the opportunity to exclude participants who developed dementia, and the particularly long follow-up of participants, we were able to investigate the relationship between social networks and age-related cognitive decline with a minimization of reverse causality bias. The results suggest that even though higher social functioning is concomitantly associated with better cognitive performances, it may not prevent subsequent decline.

Background: Western policy initiatives prioritize early diagnosis of dementia, but minority ethnic (ME) people currently present later to dementia specialist care than their indigenous counterparts. In order to allow the development of rational interventions, we completed this first study to explore the link between attitudes to help-seeking for dementia and the help-seeking pathway in the ME and indigenous population.

Methods: We purposively recruited a maximum variation sample comprising 18 family carers of people with dementia from the major UK ethnic groups. We used semi-structured interviews to determine the barriers to and facilitators of help-seeking, and the pathways to diagnosis. Two researchers independently coded interviews and recruitment continued until theoretical saturation was reached.

Results: ME carers, in contrast to the indigenous population, tended to delay help-seeking until they could no longer cope or until others commented on the problems. They often thought that families should look after their own elders and a diagnosis alone was purposeless. This appeared to relate to beliefs about the etiology of cognitive impairment, negative beliefs about psychiatry and their sense of familial responsibility.

Conclusions: ME carer beliefs were an important barrier to early diagnosis. Further work should explore whether an intervention can modify these attitudes, so that families understand that a diagnosis may allow planning and avoidance of crises; rather than signifying a failure in duty, disloyalty, or relinquishing of the caring role. Further research should focus on developing interventions to tackle barriers to help-seeking in ethnic minorities so that healthcare access can be equitable for all.

Background: Neuropsychiatric symptoms (NPS) are common in patients with dementia, and cause distress for patients. Studies on the prevalence, incidence, persistence and resolution of NPS in patients living in nursing homes are sparse. The aim of this study was to evaluate the course of NPS in patients with dementia living in Norwegian nursing homes.

Methods: 169 patients from seven Norwegian nursing homes were assessed five times over a period of 16 months with the Neuropsychiatric Inventory (NPI). The severity and the frequency of the NPI were analyzed.

Results: 91.7% of the patients had at least one clinically significant NPS at one or more assessments over the 16 months. Irritability (63.5%), agitation (51.0%) and disinhibition (50.0%) had the highest cumulative prevalence, while irritability (42.6%), disinhibition (37.8%) and depression (31.5%) showed the highest cumulative incidence. Delusion, agitation and irritability were enduring symptoms while the other symptoms had high resolution rates. The severity of the NPS did not vary significantly over time.

Conclusion: Almost every patient in Norwegian nursing homes had at least one clinically significant NPS over 16 months, but individual NPS show a fluctuating course. This should influence how we monitor and treat NPS in patients with dementia.

Background: The relationship between weight and dementia risk has not been investigated in populations with relatively low body mass index (BMI) such as the Yoruba. This study set out to achieve this objective using a prospective observational design.

Methods: The setting was Idikan Ward in Ibadan City, Nigeria. The participants were all aged 65 years or older and were enrolled in the Indianapolis-Ibadan Dementia Project. Repeated cognitive assessments and clinical evaluations were conducted to identify participants with dementia or MCI during 10 years of follow-up (mean duration: 5.97 years). BMI measures, information on alcohol, smoking history, cancer, hypertension, diabetes, heart attack, stroke and depression were collected at each follow-up evaluation. Mixed effect models adjusted for covariates were used to examine the differences in BMI among participants who developed dementia or MCI and those who remained cognitively normal during the follow-up.

Results: This analysis included 1559 participants who had no dementia at their first BMI measurements. There were 136 subjects with incident dementia, 255 with MCI and 1168 with normal cognition by the end of the study. The mean BMI at baseline was higher for female participants (22.31; SD = 4.39) than for male (21.09; SD = 3.61, p < 0.001). A significantly greater decline in BMI was found in those with either incident dementia (p < 0.001) or incident MCI (p < 0.001) compared to normal subjects.

Conclusion: Decline in BMI is associated with incident MCI and dementia in elderly Yoruba. This observation calls for close monitoring of weight loss in elderly individuals which may indicate future cognitive impairment for timely detection and tailored interventions.

Background: Preliminary studies suggest beneficial effects of animal-assisted activities (AAA) on behavioral and psychological symptoms of dementia (BPSD), but data are inconsistent. This study aimed to assess the effect of AAA with dogs on cognition, BPSD, emotional status and motor activity in severe Alzheimer's disease (AD).

Methods: Ten patients attending an Alzheimer Day Care Center (ADCC) participated in a repeated measures study, which included: two weeks' pre-intervention, three weeks' control activity with plush dogs (CA), and three weeks' AAA. Cognitive function (Severe Impairment Battery), mood (Cornell Scale for Depression in Dementia; CSDD), BPSD (Neuropsychiatric Inventory; NPI) and agitation (Cohen-Mansfield Agitation Inventory; CMAI) were assessed at baseline and after each period. Observed Emotion Rating Scale (OERS) for emotional status, Agitated Behavior Mapping Instrument (ABMI) and a checklist for motor activity were completed across the study periods, both during intervention sessions and after three hours.

Results: Cognition and NPI were unchanged across the study. Declines in the CMAI and CSDD scores after AAA were not significant, while the NPI anxiety item score decreased in comparison with CA (CA 3.1±2.3, AAA 1.5±2.7, p = 0.04). OERS “sadness” decreased (p = 0.002), while “pleasure” (p = 0.016) and “general alertness” (p = 0.003) increased during AAA compared with CA sessions, and observed sadness remained lower after three hours (p = 0.002). Motor activity increased significantly during AAA.

Conclusion: In this sample of severe AD patients in ADCC, AAA was associated with a decrease in anxiety and sadness and an increase in positive emotions and motor activity in comparison with a control activity.

Background: Despite high levels of participation in dementia education, general practitioners (GPs) and residential care facility (RCF) staff report perceived learning needs. Small group education, which is flexible, individualized, practical and case-based, is sought. We aimed to develop educational interventions for GPs and RCF staff tailored to meet their perceived educational needs.

Methods: We used a consultative process to develop education programs. A flexible program for RCF staff was developed in 30-minute blocks, which could be combined in sessions of different lengths. The RCF program aimed to facilitate sustainable change by engaging local “Dementia Champions”. For GPs, face-to-face and self-directed packages were developed. We collected participant feedback to evaluate the program.

Results: GPs and RCF staff were recruited as part of a larger intervention study. Sixteen of the 27 GPs who were offered the dementia education participated. Two of the 16 GPs participated in both learning packages. A total of 45 GP feedback responses were received from 16 GPs: 28 out of 45 GPs (62%) reported that the participants' learning needs were entirely met. Eighteen of 19 facilities offered the intervention participated and 326 RCF staff attended one or more of the 94 RCF education sessions. Feedback was collected from 93 sessions: 1013 out of 1067 RCF staff feedback responses (95%) reported that the session met the participants' learning needs. Qualitative feedback was also strongly positive.

Conclusion: Participants perceived the education programs as meeting their needs. Despite explicit attempts to provide flexible delivery options, overall participation rates remained low.

Background: The Consortium to Establish a Registry for Alzheimer's Disease Neuropsychological Assessment Battery (CERAD-NAB) offers information on the clinical diagnosis of Alzheimer's disease (AD) and gives a profile of cognitive functioning. This study explores the effects of age, education and gender on participants' performance on eight subtests in the Chinese-Cantonese version of the CERAD-NAB.

Methods: The original English version of the CERAD-NAB was translated and content-validated into a Chinese-Cantonese version to suit the Hong Kong Chinese population. The battery was administered to 187 healthy volunteers aged 60 to 94 years. Participants were excluded if they had neurological, medical or psychiatric disorders (including dementia). Stepwise multiple linear regression analyses were performed to assess the relative contribution of the demographic variables to the scores on each subtest.

Results: The Cantonese version of CERAD-NAB was shown to have good content validity and excellent inter-rater reliability. Stepwise multiple regression analyses revealed that performances on seven and four out of eight subtests in the CERAD-NAB were significantly influenced by education level and age, respectively. Age and education had significant effects on participants' performance on many tests. Gender also showed a significant effect on one subtest.

Conclusions: The preliminary data will serve as an initial phase for clinical interpretation of the CERAD-NAB for Cantonese-speaking Chinese elders.

Molecular neuroimaging techniques such as PET are proving valuable in the early and differential diagnosis of Alzheimer's disease (AD). With the advent of new therapeutic strategies aimed at reducing β-amyloid (Aβ) burden in the brain to potentially prevent or delay functional and irreversible cognitive loss, there is increased interest in developing agents that allow assessment of Aβ burden in vivo.

Amyloid imaging with PET has proven useful in the discrimination of dementias, showing significantly higher Aβ burden in the gray matter of AD patients when compared with healthy controls or patients with frontotemporal dementia. ApoE ɛ4 carriers, independent of diagnosis or disease severity, present with higher Aβ burden than non-ɛ4 carriers. Amyloid imaging matches histopathological reports in aging and dementia, reflecting the true regional density of Aβ plaques in cortical areas. It also appears to be more sensitive than FDG-PET for the diagnosis of AD.

In healthy older people there is an increasing prevalence of amyloid positive scans with age, rising from 20% in the seventh decade to 60% in the ninth decade. Of people with mild cognitive impairment (MCI), 40–60% present with detectable cortical Aβ deposition. In both groups, Aβ deposition is associated with a higher risk for cognitive decline and dementia due to AD. These observations suggest that Aβ deposition is not part of normal aging, supporting the hypothesis that it occurs well before the onset of symptoms and is likely to represent preclinical AD in asymptomatic persons and prodromal AD in MCI. Further longitudinal observations, coupled with different disease-specific tracers and biomarkers, are required to confirm this hypothesis and further elucidate the precise role of Aβ deposition in the course of AD.

Background: The economic cost of dementia is high and can be predicted by cognitive and neuropsychiatric profiles. The differential costs of the various subtypes of dementia are unknown in Argentina, and this study therefore aimed to compare these costs.

Methods: Patients with a diagnosis of dementia of Alzheimer-type (DAT), frontotemporal dementia (FTD) and vascular dementia (VaD), and their primary caregivers, were evaluated between 2002 and 2008.

Results: 104 patients with dementia (DAT = 44, FTD = 34, VaD = 26) were screened and matched by age and educational level with 29 healthy subjects. Demographic variables showed no significant differences among dementia patients. The annual direct costs were US$4625 for DAT, US$4924 for FTD, and US$5112 for VaD (p > 0.05 between groups). In the post hoc analysis VaD showed higher hospitalization costs than DAT (p < 0.001). VaD exhibited lower medication costs than FTD (p < 0.001). DAT exhibited higher anti-dementia drug costs; FTD had higher psychotropic costs. In the multivariate analysis, depression, activities of daily living, and caregiver burden were correlated with direct costs (r2 = 0.76).

Conclusions: The different dementia types have different costs. Overall, costs increased with the presence of behavioral symptoms, depression and functional impairment of activities of daily living.

Background: The purpose of this study is to identify factors that predict nursing home placement among community-dwelling Alzheimer's disease (AD) patients with psychosis and/or agitation in a randomized clinical trial (ClinicalTrials.gov number, NCT00015548).

Methods: 418 participants with AD enrolled in the Clinical Antipsychotic Trial of Intervention Effectiveness – AD (CATIE-AD) trial of anti-psychotic medications and having no evidence of nursing home use at baseline were followed at 9 months post-random assignment using data provided by caregiver proxy. χ2 tests, t-tests and Cox proportional hazard modeling were used to examine the baseline correlates of nursing home use.

Results: Of outpatients with no prior nursing home use, 15% were placed in a nursing home in the 9 months following baseline, with the average time to placement being 122 days. Bivariate analyses indicate that those with prior outpatient mental health use at study entry were more likely to be admitted; so too were those with worse physical functioning – i.e. lower scores on the AD Cooperative Study Activities of Daily Living Scale (ADCS-ADL), lower utility scores on the Health Utility Index (HUI)-III, and worse cognition on the Mini-mental State Examination. Controlling for other factors, non-Hispanic white race (hazard ratio [HR] = 2.16) and prior mental health use (HR = 1.87) increased the likelihood of admission. Those with higher ADCS-ADL scores were less likely to be placed (HR = 0.97).

Conclusions: Factors leading to nursing home entry among psychotic/agitated AD patients are similar to the general population, though high incidence of nursing home entry highlights the importance of accounting for such utilization in health economic studies of AD outcomes. It also highlights the importance of using information on ADLs and other characteristics to develop profiles identifying those at greater or lesser risk of nursing home entry and, in so doing, inform population planning associated with AD and identification of those patients and caregivers who might benefit most from interventions to prevent eventual placement.

Background: Given the potential adverse effects of antipsychotics, high use in nursing homes creates concern. Our study goal was to explore the use of antipsychotics in relation to resident characteristics, and to assess the appropriateness of antipsychotic prescribing in Belgian nursing homes.

Methods: Data were used from a cross-sectional study (Prescribing in Homes for the Elderly; PHEBE) conducted in 76 nursing homes in Belgium. Antipsychotics were classified into typical and atypical, using the anatomical therapeutic and chemical classification. Ten inappropriate antipsychotic prescribing indicators were selected from the updated Beers criteria (2003), Bergen District Nursing Home Study (BEDNURS) indicators, and Screening Tool of Older People's Prescriptions criteria (STOPP).

Results: The residents' mean age was 84.8 years, 78.1% of whom were female. The prevalence of antipsychotic utilization was 32.9%. Antipsychotics were mainly indicated for dementia-related agitation, and psychosis with/without dementia. Higher use of antipsychotics was found for dementia (OR: 3.27; 95% CI: 2.61–4.09), insomnia (OR: 1.38; 95% CI: 1.10–1.73), depression (OR: 1.30; 95% CI: 1.03–1.65), and age <80 years (OR: 1.79; 95% CI: 1.38–2.33). Inappropriate antipsychotic prescribing indicators scoring the highest among users were: long-term use (92.6%), use despite risk of falling (45.6%), combined use with other psychotropics (31.8%), and duplicate use (15.1%). Inappropriate prescribing was associated with depression (OR: 3.41) and insomnia (OR: 2.17).

Conclusion: The indicator-driven analysis of antipsychotic prescribing quality revealed a need for improvement, with the main prescribing problems relating to duration and combination of therapies. Risks/benefits of off-label use need to be evaluated more consciously at the start of therapy, and at periodic re-evaluations.

Background: Quality of life (QOL) is increasingly recognized as the main target of currently available dementia care. Its assessment has grown exponentially in the dementia field, but few studies have examined predictive factors for QOL taking caregiver variables into account. We examined patient and caregiver factors related to the QOL of dementia patients.

Methods: The study design was cross-sectional. 161 couples of community residing dementia patients and their primary caregivers were interviewed. QOL was measured by the ADRQL, a proxy-rated, dementia-specific QOL instrument. Demographic factors were collected and clinical characteristics assessed using validated scales.

Results: In univariate analyses several patient and caregiver characteristics appeared associated with patient QOL. In multivariate analyses, independent predictors of worse patient QOL were behavioral and depressive symptoms of dementia patients, dependency in basic activities of daily living, poorer cognitive function, use of antipsychotic medication, caregiver burden, and caregiver not being an adult child. The adjusted R2 of the final, seven-factor model was 0.598.

Conclusions: QOL for a person with dementia is a complex issue that is associated with several patient and caregiver factors. Efforts to improve patients’ QOL should be addressed for both patients and caregivers. The measurement of QOL should be included, when possible, as a standard measurement tool, in everyday dementia clinical practice.

Background: A growing body of research evidence indicates that improving communication with people living with dementia (PLWD) has a positive effect on their quality of life. Policy initiatives internationally highlight the prevalence of poor communication practices in care environments in general and medical contexts in particular as priority areas for improvement. Currently available communication interventions exhibit shortcomings, and their application remains unusual.

Methods: A spectrum of multidisciplinary professional and lay stakeholders, including PLWD, took part in an iterative consultation process in the UK. This aimed to develop a communications advice package which would meet their needs, and involved observation of practice in a variety of care contexts and semi-structured focus group and individual interviews.

Results: Lay participants reported dissatisfaction with current communicative practices, particularly during contact with medical professionals. Both lay and professional participants reported general dissatisfaction with currently available communication advice. An agreed version of a dementia toolkit for effective communication (DEMTEC) was produced. This consists of three “levels”. The foundation Level 1 details beliefs about the psychosocial effects of dementia on communication, as well as empowering approaches to communication involving PLWD. Level 2 consists of practical considerations and advice in eight key areas. Level 3 uses case studies to show how the principles and advice in preceding levels are applicable to individuals in different care contexts and at different stages of dementia.

Conclusion: The project has produced a free-to-users instrument that is empirically supported and adaptable to individual PLWD and to a range of health, care and sociocultural environments.

Background: Late-life depression may be undiagnosed due to symptom expression. These analyses explore the structure of depressive symptoms in older patients diagnosed with major depression by identifying clusters of patients based on their symptom profiles.

Methods: The sample comprised 366 patients enrolled in a naturalistic treatment study. Symptom profiles were defined using responses to the Center for Epidemiologic Studies Depression Scale (CES-D), the Hamilton Rating Scale for Depression (HAM-D) and the depression section of the Diagnostic Interview Schedule (DIS) administered at enrollment. Latent class analysis (LCA) was used to place patients into homogeneous clusters. As a final step, we identified a risk profile from representative items across instruments selected through variable reduction techniques.

Results: A model with four discrete clusters provided the best fit to the data for the CES-D and the DIS depression module, while three clusters best fit the HAM-D. Using LCA to identify clusters of patients based on their endorsement of seventeen representative symptoms, we found three clusters of patients differing in ways other than severity. Age, sex, education, marital status, age of onset, functional limitations, level of perceived stress and subjective social support were differentially distributed across clusters.

Conclusions: We found considerable heterogeneity in symptom profiles among older adults with an index episode of major depression. Clinical indicators such as depression history may play less of a role differentiating clusters of patients than variables such as stress, social support, and functional limitations. These findings can help conceptualize depression and potentially reduce misdiagnosis for this age group.

Background: Only a small number of studies on the natural disease course in behavioral variant frontotemporal dementia (bvFTD) have been conducted. This is surprising because knowledge about the progression of symptoms is a precondition for the design of clinical drug trials.

Methods: The aim of the present study was to examine the cognitive decline of 20 patients with mild bvFTD over one year using the Consortium to Establish a Registry for Alzheimer's Disease – Neuropsychological Assessment Battery (CERAD-NAB).

Results: Within an average follow-up interval of 13 months, patient scores declined significantly in the Mini-mental-State-Examination (MMSE) and the CERAD-NAB subtests of naming, verbal and nonverbal memory. No significant changes were found in the CERAD-NAB subtests of category fluency, recognition, and visuoconstruction. The average annualized decline on the MMSE was 4.0 ± 4.9 points. Ceiling effects were detected in Figures Copy, Word List Recognition and Modified Boston Naming Test. Though the included patient group was rather homogeneous regarding severity of dementia, the cognitive changes were very heterogeneous.

Conclusion: Given the heterogeneity of cognitive decline, the design of a test battery for clinical trials in FTD will be challenging. A cognitive battery should definitely include the MMSE, Word List Learning and Word List Delayed Recall.

Background: Informal, unpaid, and lifelong older caregivers of adults with intellectual disabilities (ID) are usually female and most often are mothers of adults with ID. However, research exploring different predictors of subjective and objective burden among these older female caregivers is sparse. The objective of this study was to examine whether the subjective and objective burden as well as positive appraisals are predicted by the same or different variables linked to the caregivers and the adults with ID.

Methods: Face-to-face interview questionnaires were administered in a city in Taiwan in 2006–2007 and 350 female family caregivers aged 55 years and older completed the interview in their homes. The independent variables included adult care demands and caregiver variables, while the dependent variables were caregivers’ subjective burden, caregivers’ objective burden and caregivers’ positive appraisals.

Results: The results demonstrated that adult care demands were associated more with the objective than the subjective caregiving burden. The strongest predictors of both subjective and objective burden were the care recipient's instrumental activities of daily living functionality, caregiver's age, and caregiver's health status. The significant predictors for positive caregiving appraisals were the caregiver's age and the caregiver's level of social support.

Conclusions: The results indicate that both the subjective and objective burdens were mostly related to the same factors, that is, to the characteristics of the older female caregivers and the recipients of care with ID. On the other hand, positive attitudes towards caregiving roles were only associated with caregiver variables.

Background: Cognitive status has been reported to be an important predictor of rehabilitation outcome. The Montreal Cognitive Assessment (MoCA) was designed to overcome some of the limitations of established cognitive screening tools such as the Mini-Mental State Examination (MMSE). The purpose of this study is to evaluate the psychometric characteristics of the MoCA as a screening tool in a geriatric rehabilitation program and its ability to predict rehabilitation outcome.

Methods: Forty-seven geriatric rehabilitation program patients participated in the study. Assessments of each patient's functional (Functional Independence Measure) and cognitive status (MMSE and MoCA) were performed. Information on discharge destinations were obtained and rehabilitation efficacy and efficiency scores were calculated.

Results: Significant correlations were found between the MoCA and other cognitive status measures. Cognitive status at admission and successful rehabilitation were also associated. Defining rehabilitation success on the basis of relative functional efficacy (an indicator that includes the patient's potential for improvement), the sensitivity and specificity of the MoCA were 80% and 30% respectively. The attention subscale of the MoCA was also uniquely predictive of rehabilitation success. The attention subscale (cutoff 5/6) of the MoCA had a sensitivity of 40% and specificity of 90%, as did the MMSE.

Conclusions: As a cognitive screening tool, the MoCA appears to have acceptable psychometric properties. Results suggest that the MoCA can have a considerable advantage over the MMSE in sensitivity and equivalence in specificity using both total and attention scale scores. The MoCA may be a more useful measure for detecting cognitive impairment and predicting rehabilitation outcome in this population.

Background: Cognitive and psychiatric features are important components of dementia. Early onset dementia (EOD) has been found to be associated with a greater genetic basis. If this is the case, EOD could have genetic association with psychiatric illnesses, given the presence of more behavioral disturbances in this condition. There is a definite need to explore the presence of psychiatric symptoms and disorders in families of patients with dementia.

Methods: The authors compared 52 proband families of dementia and 45 control families in order to assess the familial co-aggregation of major psychiatric illnesses. The cumulative risk in first degree relatives in the two groups for major psychiatric illnesses was calculated using Kaplan Meier Survival analysis. Early onset and late onset dementia proband families were compared separately with control families for the same.

Results: There was a significantly higher morbid risk for psychosis in dementia proband families (generalized Wilcoxon, Breslow −4.165, p = 0.041). Also, the morbid risk was higher in early onset dementia proband families (generalized Wilcoxon, Breslow −6.16, p = 0.013) while it was not so in late onset dementia proband families (generalized Wilcoxon, Breslow −2.99, p = 0.084)

Conclusion: There is a possible genetic overlap between dementia and psychosis. This appears to be more pronounced with early onset dementia than with late onset dementia.