The clinical utility of the Cornell Scale for Depression in Dementia as a routine assessment in nursing homes

Age-Friendly Framework in Post-Acute and Long-Term Care: Implementing the 4Ms in Long-Term Care

Age-Friendly Health Systems is an initiative of The John A. Hartford Foundation and the Institute for Healthcare Improvement, in partnership with the American Hospital Association and the Catholic Health Association of the United States that uses a framework to ensure high-quality, person-centered care for older adults. The framework, called the 4 Ms, includes what matters, mobility, medications, and mentation. This work outlines a practical, evidence- based approach to implementing 4 Ms care in long-term care (LTC).

Outcome measures from international older adult care home intervention research: a scoping review

BACKGROUND

Care homes are increasingly important settings for intervention research to enhance evidence-informed care. For such research to demonstrate effectiveness, it is essential that measures are appropriate for the population, setting and practice contexts.

OBJECTIVE

To identify care home intervention studies and describe the resident outcome measures used.

DESIGN

Scoping review.

METHODS

We reviewed international care home research published from 2015 to August 2022. We searched MEDLINE, EMBASE, CINAHL and ASSIA. We included any intervention study conducted in a care home, reporting resident outcomes. We extracted resident outcome measures, organised these using the domains of an adapted framework and described their use.

RESULTS

From 7,330 records screened, we included 396 datasets reported in 436 publications. These included 12,167 care homes and 836,842 residents, with an average of 80 residents per study. The studies evaluated 859 unique resident outcomes 2,030 times using 732 outcome measures. Outcomes were evaluated between 1 and 112 times, with 75.1% of outcomes evaluated only once. Outcome measures were used 1-120 times, with 68.4% of measures used only once. Only 14 measures were used ≥20 times. Functional status, mood & behaviour and medications were the commonest outcome domains assessed. More than half of outcomes were assessed using scales, with a fifth using existing records or administrative data.

CONCLUSIONS

There is significant heterogeneity in the choice and assessment of outcomes for intervention research in care homes. There is an urgent need to develop a consensus on useful and sensitive tools for care homes, working with residents, families and friends and staff.

Predictive validity of the Cornell Scale for depression in dementia among older adults with and without dementia: A systematic review and meta-analysis

This review analyzes the predictive validity of the Cornell Scale for Depression in Dementia (CSDD), considering cognitive function. Electronic searches were performed using MEDLINE, EMBASE, CINAHL, and PsycINFO databases. Overall, 20 studies were reviewed, including 3,499 older adults, with and without dementia, who satisfied the selection criteria. Participants were stratified into the dementia, non-dementia, and mixed groups, and the diagnostic performance of the CSDD was assessed using receiver operating characteristic (ROC) curves. In the dementia and non-dementia groups, the area under the curve was ≥ 0.9, confirming high accuracy of the test. The pooled sensitivity was the highest in the dementia group (0.87), followed by the mixed group (0.84) and non-dementia group (0.82). In the subgroup analysis based on the Mini-Mental State Examination (MMSE), the ROC curve was 0.90 for older adults with MMSE scores < 15 and 0.87 for those with an MMSE score ≥ 15. Therefore, the CSDD can be considered excellent tool for assessing depression in all older adults, although its predictive ability is better for older adults with dementia compared to that in those without dementia. It can be used as a first-line screening tool for depression, regardless of cognitive function.

Detecting depression in persons living in long-term care: a systematic review and meta-analysis of diagnostic test accuracy studies

OBJECTIVE

Depressive disorders are common in long-term care (LTC), however, there is no one process used to detect depressive disorders in this setting. Our goal was to describe the diagnostic accuracy of depression detection tools used in LTC settings.

METHODS

We conducted a systematic review and meta-analysis of diagnostic accuracy measures. The databases PubMed, EMBASE, PsycINFO and CINAHL were searched from inception to 10 September 2021. Studies involving persons living in LTC, assisted living residences or facilities, comparing diagnostic accuracy of depression tools with a reference standard, were included. The Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2) tool was used to assess risk of bias.

RESULTS

We identified 8,463 citations, of which 20 studies were included in qualitative synthesis and 19 in meta-analysis. We identified 23 depression detection tools (including different versions) that were validated against a reference standard. At a cut-off point of 6 on the Geriatric Depression Scale-15 (GDS-15), the pooled sensitivity was 73.6% (95% confidence interval (CI) 43.9%-76.5%), specificity was 76.5% (95% CI 62.9%-86.7%), and an area under the curve was 0.83. There was significant heterogeneity in these analyses. There was insufficient data to conduct meta-analysis of other screening tools. The Nursing Homes Short Depression Inventory (NH-SDI) had a sensitivity ranging from 40.0% to 98.0%. The 4-item Cornell Scale for Depression in Dementia (CSDD) had the highest sensitivity (67.0%-90.0%) for persons in LTC living with dementia.

CONCLUSIONS

There are 23 tools validated for detection of depressive disorders in LTC, with the GDS-15 being the most studied. Tools developed specifically for use in LTC settings include the NH-SDI and CSDD-4, which provide briefer options to screen for depression. However, more studies of both are needed to examine tool accuracy using meta-analyses.

Screening for depression in older adults with cognitive impairment in the homecare setting: a systematic review

OBJECTIVE

Previous systematic reviews have examined depression screening in older adults with cognitive impairment (CI) in outpatient and inpatient clinics, nursing homes, and residential care. Despite an increasing number of older adults with CI receiving care in their homes, less is known about best depression screening practices in homecare. The objective of this review is to identify evidence-based practices for depression screening for individuals with CI receiving homecare by assessing tool performance and establishing the current evidence for screening practices in this setting.

METHODS

This review is registered under PROSPERO (ID: CRD42018110243). A systematic search was conducted using MEDLINE, EMBASE, Health and Psychosocial Abstracts, PsycINFO and CINAHL. The following criteria were used: assessment of depression at home in older adults (>55 years) with CI, where performance outcomes of the depression screening tool were reported.

RESULTS

Of 5,453 studies, only three met eligibility criteria. These studies evaluated the Patient Health Questionnaire (n = 236), the Geriatric Depression Scale (n = 79) and the Mental Health Index (n = 1,444) in older adults at home with and without CI. Psychometric evaluation demonstrated moderate performance in the subsamples of people with CI.

CONCLUSION

At present, there is insufficient evidence to support best practices in screening for depression in people with CI in homecare.

Ecological Momentary Assessment of Depression in People With Advanced Dementia: Longitudinal Pilot Study

Background

Barriers to assessing depression in advanced dementia include the presence of informant and patient recall biases. Ecological momentary assessment provides an improved approach for mood assessment by collecting observations in intervals throughout the day, decreasing recall bias, and increasing ecological validity.

Objective

This study aims to evaluate the feasibility, reliability, and validity of the modified 4-item Cornell Scale for Depression in Dementia for Momentary Assessment (mCSDD4-MA) tool to assess depression in patients with advanced dementia.

Methods

A intensive longitudinal pilot study design was used. A total of 12 participants with advanced dementia were enrolled from an inpatient psychogeriatric unit. Participants were assessed using clinical depression assessments at admission and discharge. Research staff recorded observations four times a day for 6 weeks on phones with access to the mCSDD4-MA tool. Descriptive data related to feasibility were reported (ie, completion rates). Statistical models were used to examine the interrater reliability and construct and predictive validity of the data.

Results

Overall, 1923 observations were completed, representing 55.06% (1923/3496) of all rating opportunities with 2 raters and 66.01% (1923/2913) with at least one rater. Moderate interrater reliability was demonstrated for all items, except for lack of interest. Moderate correlations were observed between observers and patient-reported outcomes, where observers reported fewer symptoms relative to participants’ self-reports. Several items were associated with and able to predict depression.

Conclusions

The mCSDD4-MA tool was feasible to use, and most items in the tool showed moderate reliability and validity for assessing depression in dementia. Repeated and real-time depression assessment in advanced dementia holds promise for the identification of clinical depression and depressive symptoms.

The Music Engagement Program for people with Alzheimer's disease and dementia: Pilot feasibility trial outcomes

Alzheimer's disease and dementia are common, highly disabling conditions frequently requiring residential care. This exploratory proof-of-concept study aimed to determine if the specialised Music Engagement Program (MEP) was sustainable, acceptable, and effective in improving quality of life, emotional wellbeing, and depression symptoms in this population. Sixteen residents, six staff members, and three family and community members took part in the evaluation of the MEP for people living with dementia in a residential aged-care nursing home in Canberra, Australia. Multiple methods were used. Quantitative evaluation assessed residents' depression symptoms (Cornell scale) at pre- and post-intervention, and emotional wellbeing pre- and post-session. Qualitative interviews with staff, and family and community members addressed the MEP's acceptability and potential sustainability. Results showed residents' mean depression scores were reduced from pre- to post-intervention (p = .039; d_z = 0.72). Interviews established multiple benefits for residents including improved mood, calmness, and reduced aggression. However, staff did not believe it was feasible to continue the MEP sessions beyond the trial period without an external facilitator, citing potential difficulties in adhering to internal activities due to time constraints. This pilot study provides encouraging preliminary evidence for the MEP's acceptability and potential effectiveness for improving depression and wellbeing in this group.

High vision-related quality of life indices reduce the odds of depressive symptoms in aged care facilities

Objective: To examine the association between vision-related quality of life (VRQoL) and depressive symptoms in residents with vision impairment (VI) in aged care facilities.Methods: In this cross-sectional study using baseline data from a cluster-randomized controlled trial (ACTRN12615000587505) assessing the effectiveness of a novel eye care model, 186 English-speaking residents (mean age 84 years, SD[standard deviation] = 8.7; 33.9% male) with VI and moderate cognitive functioning or better were recruited from 38 facilities across Victoria, Australia. VRQoL was measured using Rasch-transformed scores from the 'Reading'; 'Mobility', and 'Emotional' scales of the Impact of Vision Impairment for Residential Care (IVI-RC) questionnaire. Outcomes were presence of depressive symptoms (binary score: Cornell Scale for Depression in Dementia [CSDD] > 0 vs. CSDD = 0) and severity of depressive symptoms (continuous CSDD score; sample range 1-21). Independent associations with presence and severity of depressive symptoms were examined using zero-inflated logistic and linear multivariable models, respectively.Results: Of the 186 participants, n = 79 (42.5%), n = 94 (50.5%) and n = 13 (7%) reported no, mild (scores 1-7), and clinically significant depressive symptoms (score ≥8), respectively. Better vision-related Mobility (OR = 0.64; 95% CI: 0.44, 0.95, p = 0.02) was associated with reduced odds of depressive symptoms. With every unit improvement in vision-related Reading (β=-0.48; 95% CI: -0.94, -0.01, p = 0.04) and Emotional (β=-0.56; 95% CI: -1.09, -0.02, p = 0.04), severity of depressive symptoms reduced, independent of sociodemographic and medical issues.Conclusion: Better VRQoL was independently associated with reduced depressive symptoms. Supporting older people in aged care to maintain optimal levels of vision-specific functioning, independence, and emotional well-being may protect their mental health.

Depressive symptoms in long term care facilities in Western Canada: a cross sectional study

BACKGROUND

The main objective is to better understand the prevalence of depressive symptoms, in long-term care (LTC) residents with or without cognitive impairment across Western Canada. Secondary objectives are to examine comorbidities and other factors associated with of depressive symptoms, and treatments used in LTC.

METHODS

11,445 residents across a random sample of 91 LTC facilities, from 09/2014 to 05/2015, were stratified by owner-operator model (private for-profit, public or voluntary not-for-profit), size (small: < 80 beds, medium: 80-120 beds, large > 120 beds), location (Calgary and Edmonton Health Zones, Alberta; Fraser and Interior Health Regions, British Columbia; Winnipeg Health Region, Manitoba). Random intercept generalized linear mixed models with depressive symptoms as the dependent variable, cognitive impairment as primary independent variable, and resident, care unit and facility characteristics as covariates were used. Resident variables came from the Resident Assessment Instrument - Minimum Data Set (RAI-MDS) 2.0 records (the RAI-MDS version routinely collected in Western Canadian LTC). Care unit and facility variables came from surveys completed with care unit or facility managers.

RESULTS

Depressive symptoms affects 27.1% of all LTC residents and 23.3% of LTC resident have both, depressive symptoms and cognitive impairment. Hypertension, urinary and fecal incontinence were the most common comorbidities. Cognitive impairment increases the risk for depressive symptoms (adjusted odds ratio 1.65 [95% confidence interval 1.43; 1.90]). Pain, anxiety and pulmonary disorders were also significantly associated with depressive symptoms. Pharmacologic therapies were commonly used in those with depressive symptoms, however there was minimal use of non-pharmacologic management.

CONCLUSIONS

Depressive symptoms are common in LTC residents -particularly in those with cognitive impairment. Depressive symptoms are an important target for clinical intervention and further research to reduce the burden of these illnesses.

Evaluation of the Music Engagement Program for people with Alzheimer's disease and dementia: Study protocol for a pilot trial

BACKGROUND

Alzheimer's disease and dementia are prevalent conditions globally. People with Alzheimer's disease and dementia commonly experience mental health problems, negative emotional states, and behavioural disturbance. Music therapy has previously been used in this population to improve symptoms of mental health problems; however, there is a paucity of evidence-based programs that also explore positive outcomes such as overall quality of life, social outcomes, as well as the acceptability and sustainability of these programs.

AIMS

This project aims to evaluate the effectiveness of the specialised Music Engagement Program (MEP) in improving quality of life, wellbeing, and depression symptoms, in aged-care residents with Alzheimer's disease and dementia. The project also aims to explore how the MEP could be applied and maintained on a broader level throughout the aged-care community.

METHODS

The intervention will take place over 8 weeks in an aged-care facility for people living with dementia in Canberra, Australia. Weekly 45-60-min group singing sessions will be led by a music facilitator.

RESULTS

The results of the study will be submitted for publication in relevant academic journals and mental health conferences, disseminated to participants on request, to the residential care facility, and via the lead researcher's website.

CONCLUSIONS

This study can provide an indication of the feasibility of the MEP in enhancing the mental health and wellbeing of individuals with Alzheimer's disease and dementia. Further investigation will be required to establish the MEP's ability to be maintained on an ongoing basis with minimal costs and administrative support.

TRIAL REGISTRATION

Australian New Zealand Clinical Trial Registry (ANZCTR): ACTRN12618001690246.

Measurement validity of the Patient-Health Questionnaire-9 in US nursing home residents

OBJECTIVES

The objective of this study was to assess the measurement properties of the self-reported Patient Health Questionnaire-9 (PHQ-9) and its 10-item observer version (PHQ-10OV) among nursing home residents.

METHODS

We conducted a retrospective study of Minimum Data Set 3.0 assessments for national cohorts of Medicare Fee-for-Service beneficiaries who were newly admitted or incident long-stay residents in 2014-2015 at US nursing homes (NHs) certified by the Center for Medicare and Medicaid Services. Statistical analyses included examining internal reliability with McDonald's omega, structural validity with confirmatory factor analysis, and hypothesis testing for expected gender differences and criterion validity with descriptive statistics. The Chronic Condition Warehouse depression diagnoses were used as an administrative reference standard.

RESULTS

Both the PHQ-9 and PHQ-10OV had good internal reliability with omega values above 0.85. The self-reported scale yielded good model fit for a one-factor solution, while the PHQ-10OV had slightly poorer fit and a lower standardized factor loading on the additional irritability item. Both scales appear sufficiently one-dimensional given that somatic items had higher factor loading on a general depression factor than on a somatic subfactor. We were unable to obtain expected gender differences on the PHQ-10OV scale. The PHQ-9 and PHQ-10OV were both highly specific but had poor sensitivity compared with an administrative reference standard.

CONCLUSIONS

The PHQ-9 appears to be a valid and promising measurement instrument for research about depression among NH residents, while the validity of the PHQ-10OV should be examined further with a structured psychiatric interview as a stronger criterion standard.

The 2002 NIMH Provisional Diagnostic Criteria for Depression of Alzheimer's Disease (PDC-dAD): Gauging their Validity over a Decade Later

Presented herein is evidence for criterion, content, and convergent/discriminant validity of the NIMH-Provisional Diagnostic Criteria for depression of Alzheimer's Disease (PDC-dAD) that were formulated to address depression in Alzheimer's disease (AD). Using meta-analytic and systematic review methods, we examined criterion validity evidence in epidemiological and clinical studies comparing the PDC-dAD to Diagnostic and Statistical Manual of Mental Disorders fourth edition (DSM-IV), and International Classification of Disease (ICD 9) depression diagnostic criteria. We estimated prevalence of depression by PDC, DSM, and ICD with an omnibus event rate effect-size. We also examined diagnostic agreement between PDC and DSM. To gauge content validity, we reviewed rates of symptom endorsement for each diagnostic approach. Finally, we examined the PDC's relationship with assessment scales (global cognition, neuropsychiatric, and depression definition) for convergent validity evidence. The aggregate evidence supports the validity of the PDC-dAD. Our findings suggest that depression in AD differs from other depressive disorders including Major Depressive Disorder (MDD) in that dAD is more prevalent, with generally a milder presentation and with unique features not captured by the DSM. Although the PDC are the current standard for diagnosis of depression in AD, we identified the need for their further optimization based on predictive validity evidence.

Clinically significant discrepancies between sleep problems assessed by standard clinical tools and actigraphy

Background

Sleep disturbances are widespread among nursing home (NH) patients and associated with numerous negative consequences. Identifying and treating them should therefore be of high clinical priority. No prior studies have investigated the degree to which sleep disturbances as detected by actigraphy and by the sleep-related items in the Cornell Scale for Depression in Dementia (CSDD) and the Neuropsychiatric Inventory – Nursing Home version (NPI-NH) provide comparable results. Such knowledge is highly needed, since both questionnaires are used in clinical settings and studies use the NPI-NH sleep item to measure sleep disturbances. For this reason, insight into their relative (dis)advantages is valuable.

Method

Cross-sectional study of 83 NH patients. Sleep was objectively measured with actigraphy for 7 days, and rated by NH staff with the sleep items in the CSDD and the NPI-NH, and results were compared. McNemar's tests were conducted to investigate whether there were significant differences between the pairs of relevant measures. Cohen's Kappa tests were used to investigate the degree of agreement between the pairs of relevant actigraphy, NPI-NH and CSDD measures. Sensitivity and specificity analyses were conducted for each of the pairs, and receiver operating characteristics (ROC) curves were designed as a plot of the true positive rate against the false positive rate for the diagnostic test.

Results

Proxy-raters reported sleep disturbances in 20.5% of patients assessed with NPI-NH and 18.1% (difficulty falling asleep), 43.4% (multiple awakenings) and 3.6% (early morning awakenings) of patients had sleep disturbances assessed with CSDD. Our results showed significant differences (p<0.001) between actigraphy measures and proxy-rated sleep by the NPI-NH and CSDD. Sensitivity and specificity analyses supported these results.

Conclusions

Compared to actigraphy, proxy-raters clearly underreported NH patients' sleep disturbances as assessed by sleep items in NPI-NH and CSDD. The results suggest that the usefulness of proxy-rater measures of sleep may be questionable and further research is needed into their clinical value. The results highlight the need for NH staff to acquire and act on knowledge about sleep and sleep challenges among NH patients.

Trial registration

Registered at www.clinicaltrials.gov (registration number NCT02238652) on July 7th 2014 (6 months after study initiation).

Depression Case Finding in Individuals with Dementia: A Systematic Review and Meta-Analysis

OBJECTIVES

To compare the diagnostic accuracy of depression case finding tools with a criterion standard in the outpatient setting among adults with dementia.

DESIGN

Systematic review and meta-analysis.

SETTING

Studies of older outpatients with dementia.

PARTICIPANTS

Elderly outpatients (clinic and long-term care) with dementia (N = 3,035).

MEASUREMENTS

Prevalence of major depression and diagnostic accuracy measures including sensitivity, specificity, and likelihood ratios.

RESULTS

From the 11,539 citations, 20 studies were included for qualitative synthesis and 15 for a meta-analysis. Tools included were the Montgomery Åsberg Depression Rating Scale, Cornell Scale for Depression in Dementia (CSDD), Geriatric Depression Scale (GDS), Center for Epidemiologic Studies Depression Scale (CES-D), Hamilton Depression Rating Scale (HDRS), Single Question, Nijmegen Observer-Rated Depression Scale, and Even Briefer Assessment Scale-Depression. The pooled prevalence of depression in individuals with dementia was 30.3% (95% CI = 22.1-38.5). The average age was 75.2 (95% CI = 71.7-78.7), and mean Mini-Mental State Examination scores ranged from 11.2 to 24. The diagnostic accuracy of the individual tools was pooled for the best-reported cutoffs and for each cutoff, if available. The CSDD had a sensitivity of 0.84 (95% CI = 0.73-0.91) and a specificity of 0.80 (95% CI = 0.65-0.90), the 30-item GDS (GDS-30) had a sensitivity of 0.62 (95% CI = 0.45-0.76) and a specificity 0.81 (95% CI = 0.75-0.85), and the HDRS had a sensitivity of 0.86 (95% CI = 0.63-0.96) and a specificity of 0.84 (95% CI = 0.76-0.90). Summary statistics for all tools across best-reported cutoffs had significant heterogeneity.

CONCLUSION

There are many validated tools for the detection of depression in individuals with dementia. Tools that incorporate a physician interview with patient and collateral histories, the CSDD and HDRS, have higher sensitivities, which would ensure fewer false-negatives.

Development and Validation of a Short Version of the Cornell Scale for Depression in Dementia for Screening Residents in Nursing Homes

OBJECTIVES

To develop and validate a short version of the Cornell Scale for Depression in Dementia (CSDD-19) for routine detection of depression in nursing homes.

SETTING

Australian nursing homes.

METHODS

A series of cross-sectional studies were conducted involving: 1) descriptive analysis of pooled data from five nursing home studies that used the CSDD-19 (N = 671) to identify patterns of responses and missing data on individual CSDD items; 2) analysis of four of the five studies (N = 556) to assess CSDD-19 for unidimensionality, item fit, and differential item functioning using Rasch modeling to develop a shorter version, the CSDD-4; 3) validation of the CSDD-4 against the DSM-IV using the fifth study of 115 residents and through expert consultations; and 4) evaluation of the clinical utility of CSDD-4 using an independent cohort of 92 nursing home residents.

RESULTS

Four items from the original CSDD-19 were found to be most suitable for depression screening: anxiety, sadness, lack of reactivity to pleasant events, and irritability. The CSDD-4 highly correlated with the original scale (N = 474, r = 0.831, p < 0.001), with acceptable internal consistency (Cronbach's alpha = 0.70). At the cutoff score of less than 2, sensitivity and specificity of CSDD-4 were 81% and 51%, respectively, for the independent cohort (N = 92), of whom 50% had dementia. The CSDD-4 had an area under the curve (AUC) of 0.73 (z = 3.47, p < 0.001), which was compatible with the CSDD-19 (AUC = 0.69, z = 2.89, p < 0.01).

CONCLUSIONS

The CSDD-4 is valid for routine screening of depression in nursing homes. Its adoption is feasible and practical for nursing home staff, and may facilitate more comprehensive assessment and management of depression in nursing home residents.

Depression and Depression Treatment in a Population-Based Study of Individuals Over 60 Years Old Without Dementia

OBJECTIVE

To estimate the prevalence of depression in a population-based sample of older adults, and to identify the individual profile of people who received depression treatment.

DESIGN

Cross-sectional.

SETTING

Central area (Kungsholmen) in Stockholm, Sweden.

PARTICIPANTS

A randomized population-based sample of individuals aged 60 years and older (N = 3,084) without dementia from the Swedish National Study of Aging and Care in Kungsholmen examined between 2001 and 2004.

MEASUREMENTS

Experienced physicians carried out a semi-structured psychiatric examination including the Comprehensive Psychopathological Rating Scale. Depression was diagnosed according to DSM-IV-TR and DSM-5 criteria. Information regarding drug treatment and psychotherapy was collected during the examination and is based on self-report.

RESULTS

The prevalence of depression was 5.9% (major depression: 0.8%, minor depression: 5.1%). In the total sample, 8.3% were prescribed an antidepressant and 0.9% were treated with psychotherapy. Among individuals with depression, fewer than one-third received treatment with psychotherapy or antidepressants, but almost half were prescribed anxiolytic or hypnotic drugs. Individuals with self-reported depression and anxiety were more likely to receive depression treatment whereas individuals with depression who reported insomnia were less likely to receive depression treatment.

CONCLUSIONS

Our findings indicate that even in a central urban area of a country with an advanced healthcare system depression in old age is often unrecognized and untreated. In addition, almost half of those with depression received potentially inappropriate drug treatment with anxiolytics or hypnotics.