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The aim of the intervention proposed in the present study is to assess the effect of a cognitive stimulation (CS) intervention program in an individual and long-term format, for non-institutionalized elderly people with neurocognitive disorders and in a situation of social vulnerability. Specifically, to test the effectiveness of CS on the global cognitive state, on mood state, on quality of life and on functional state. The program will be composed by 50 sessions, including three of assessment sessions (pre, intra and post-intervention). Each session will have a duration of 45 minutes with a weekly frequency. Control group participants will maintain their treatment as usual.
According to World Health Organization, between 2000 and 2050, the proportion of the planet's inhabitants over 60 years of age will double, from 11% to 22%. Specifically, this age group will increase from 605 million to 2000 million worldwide by the middle of the century.
As for Portugal, according to data from the National Statistics Institute, the resident population was composed by 21.5% of elderly people. This percentage was higher than the European Union average of 28 countries (EU28), which does not reach 20%, with Portugal being the fourth country with the highest percentage of elderly people.
Aging implies an increased risk for the development of biological, socioeconomic and psychosocial vulnerabilities, derived from biological decline and from an increase in pathologies associated with aging itself. In view of the current Covid-19 pandemic, the risk of vulnerability is heightened.
There are several chronic diseases that affect the elderly. Regarding mental disorders, the most frequent as age, are neurocognitive disorders. The diagnostic criteria for this pathology emphasize cognitive changes, and as such, it is clinically based on cognitive and memory decline.
There is evidence that in the early stages of neurocognitive disorders, people are able to learn and improve their cognitive function through interventions, such as cognitive stimulation. There are three types of cognitive intervention: cognitive stimulation, cognitive rehabilitation and cognitive training. Cognitive rehabilitation is an individual approach to cognitive impairment and improves daily functioning. Cognitive training is designed for the patient to perform a set of tasks in order to improve or maintain cognitive function through guided practice. Cognitive stimulation is an intervention where the cognitive domains are not used isolated, but rather integrated. Cognitive stimulation can be structured in an individual or group format. Individual cognitive stimulation includes activities designed to stimulate cognition, conducted only with the therapist and the patient.
In a Portuguese study, with participants in the same geographic area, who applied individual cognitive stimulation therapy to patients with mild neurocognitive disorder, over a year, a significant improvement was found in the intervention group in terms of cognitive performance and a reduction of depressive symptoms, with a moderate to large effect size, suggesting that cognitive stimulation therapy is effective in an individual format.
According to this evidence, the National Institute for Health and Clinical Excellence recommended cognitive stimulation as a non-pharmacological therapy for people with mild to moderate neurocognitive disorder.
In a systematic review about cognitive stimulation, studies showed a strong evidence that cognitive stimulation has a positive impact on cognitive performance, depression, activities of daily living and behavior in people with neurocognitive disorders.
Considering the previous information, the aim of this project is to apply cognitive stimulation in an individual format to improve cognitive status and performance, quality of life and functionality, and reduce depressive symptoms in non-institutionalized elderly people in a vulnerable social context with a diagnosis of neurocognitive disorder.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Intervention Group | Experimental | Intervention group will receive 47 sessions of individual CS and participate in 3 evaluation sessions. The CS program will last 1 year and each individual CS session will last approximately 45 minutes. |
|
| Control Group | No Intervention | Participants assigned to the control group will maintain their usual treatment in the institution, participating in the activities previously assigned to their individual care plan. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Cognitive Stimulation | Behavioral | The intervention includes 50 sessions, over the course of one year, being that 3 of those sessions will be the pretest, intratest and posttest evaluations. The intervention sessions will last approximately 45 minutes and they will be developed according to the following structure: welcoming and greeting the participants (5 minutes); reality orientation therapy (10 minutes), cognitive stimulation [CS] activity (25 minutes); return to calm and closure of the session, and session evaluation (5 minutes). CS sessions will be conducted in an individual intervention format. The intervention sessions will include several activities based on different non-pharmacological therapies (e.g., reminiscence therapy, reality orientation therapy, cognitive training) whose effectiveness in older adults with neurocognitive disorders has been scientifically proven. All individual CS sessions will be conducted by one therapist (clinical psychologist) with more than five years of experience in CS. |
| Measure | Description | Time Frame |
|---|---|---|
| Cognitive state evaluated through Mini-Mental State Examination | Significant statistic improvement in the participant's test scores between pre-intervention, intra-intervention and postintervention assessments. Mini-Mental State Examination is a brief screening test for cognitive function. Assesses 6 cognitive functions: orientation, registration, attention and calculation, recall, language and visuoconstructive ability. Global score ranges from 0-30 points, higher scores indicate better cognitive function. | Pre-intervention |
| Change in cognitive state evaluated through Mini-Mental State Examination | Significant statistic improvement in the participant's test scores between pre-intervention, intra-intervention and postintervention assessments. Mini-Mental State Examination is a brief screening test for cognitive function. Assesses 6 cognitive functions: orientation, registration, attention and calculation, recall, language and visuoconstructive ability. Global score ranges from 0-30 points, higher scores indicate better cognitive function. | 6 months after the beginning of the intervention |
| Change in cognitive state evaluated through Mini-Mental State Examination | Significant statistic improvement in the participant's test scores between pre-intervention, intra-intervention and postintervention assessments. Mini-Mental State Examination is a brief screening test for cognitive function. Assesses 6 cognitive functions: orientation, registration, attention and calculation, recall, language and visuoconstructive ability. Global score ranges from 0-30 points, higher scores indicate better cognitive function. | 12 months after the beginning of the intervention |
| Cognitive performance evaluated through Montreal Cognitive Assessment | It's a 32-item mild cognitive impairment screening instrument that assesses eight cognitive functions: visuospatial/executive, naming, memory, attention, language, abstraction, delayed recall and orientation. Montreal Cognitive Assessment score is calculated by adding the points of the tasks successfully completed, and it ranges from 0 to 30 points, being that higher scores indicate better cognitive performance. |
| Measure | Description | Time Frame |
|---|---|---|
| Depressive symptoms evaluated through Geriatric Depression Scale -15 | Significant statistic improvement in the participant's test scores between pre-intervention, intra-intervention and postintervention assessments. Geriatric Depression Scale -15 is a screening test for depressive symptoms in elderly adults. Assesses depression in the elderly by distinguishing between depressive and dementia symptoms. This instrument does not include somatic conditions common to the elderly, such as appetite, sleep or sexual disturbances, or lower energy level. The overall score ranges from 0 to 15. The higher the score, the greater the severity of the depressive symptoms. |
| Measure | Description | Time Frame |
|---|---|---|
| Sociodemographic data collected through a sociodemographic questionnaire | Sociodemographic data will be collected using a sociodemographic questionnaire, designed specifically for this study, regarding information about age, gender, literacy, health conditions, among others. | Pre-intervention |
| Adherence to the intervention and dropouts evaluated through a session form |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Susana I Justo Henriques, PhD | Health Sciences Research Unit: Nursing (UICISA: E), ESEnfC | Principal Investigator |
| Ana E Marques Castro, MSc | CEDIARA - Assoc. Solidariedade Social de Ribeira de Fráguas | Principal Investigator |
| Enrique Pérez Sáez, PhD | National Reference Centre for Alzheimer's and Dementia Care, Imserso | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Cediara - Social Solidarity Association of Ribeira de Fráguas | Ribeira de Fráguas | Albergaria-a-Velha | 3850-705 | Portugal |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| Background | Apóstolo JLA, Bobrowicz-Campos EM, Reis, IAC, Henriques SJ., Correia CAV. Exploring the screening capacity of the European Portuguese version of the 15-item Geriatric Depression Scale. Revista de Psicopatología y Psicología Clínica. 2018; 23(2): 99-107. https://doi.org/10.5944/rppc.vol.23.num.2.2018.21050 | ||
| Background | Apóstolo JL, Loureiro LMJ, Carvalho IA, Alves I, Batista DF, Sfetcu R. Contribution to the adaptation of the Geriatric Depression Scale-15 into Portuguese. Revista de Enfermagem Referencia. 2014; IV(3): 65-73. https://doi.org/10.12707/RIV14033 | ||
| 23534370 | Background | Barrios H, Verdelho A, Narciso S, Goncalves-Pereira M, Logsdon R, de Mendonca A. Quality of life in patients with cognitive impairment: validation of the Quality of Life-Alzheimer's Disease scale in Portugal. Int Psychogeriatr. 2013 Jul;25(7):1085-96. doi: 10.1017/S1041610213000379. Epub 2013 Mar 27. | |
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| ID | Term |
|---|---|
| D019965 | Neurocognitive Disorders |
| D003704 | Dementia |
| D060825 | Cognitive Dysfunction |
| D012919 | Social Behavior |
| ID | Term |
|---|---|
| D001523 | Mental Disorders |
| D001927 | Brain Diseases |
| D002493 | Central Nervous System Diseases |
| D009422 | Nervous System Diseases |
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|
| Pre-intervention |
| Change in cognitive performance evaluated through Montreal Cognitive Assessment | It's a 32-item mild cognitive impairment screening instrument that assesses eight cognitive functions: visuospatial/executive, naming, memory, attention, language, abstraction, delayed recall and orientation. Montreal Cognitive Assessment score is calculated by adding the points of the tasks successfully completed, and it ranges from 0 to 30 points, being that higher scores indicate better cognitive performance. | 6 months after the beginning of the intervention |
| Change in cognitive performance evaluated through Montreal Cognitive Assessment | It's a 32-item mild cognitive impairment screening instrument that assesses eight cognitive functions: visuospatial/executive, naming, memory, attention, language, abstraction, delayed recall and orientation. Montreal Cognitive Assessment score is calculated by adding the points of the tasks successfully completed, and it ranges from 0 to 30 points, being that higher scores indicate better cognitive performance. | 12 months after the beginning of the intervention |
| Pre intervention |
| Change in depressive symptoms evaluated through Geriatric Depression Scale -15 | Significant statistic improvement in the participant's test scores between pre-intervention, intra-intervention and postintervention assessments. Geriatric Depression Scale -15 is a screening test for depressive symptoms in elderly adults. Assesses depression in the elderly by distinguishing between depressive and dementia symptoms. This instrument does not include somatic conditions common to the elderly, such as appetite, sleep or sexual disturbances, or lower energy level. The overall score ranges from 0 to 15. The higher the score, the greater the severity of the depressive symptoms. | 6 months after the beginning of the intervention |
| Change in depressive symptoms evaluated through Geriatric Depression Scale -15 | Significant statistic improvement in the participant's test scores between pre-intervention, intra-intervention and postintervention assessments. Geriatric Depression Scale -15 is a screening test for depressive symptoms in elderly adults. Assesses depression in the elderly by distinguishing between depressive and dementia symptoms. This instrument does not include somatic conditions common to the elderly, such as appetite, sleep or sexual disturbances, or lower energy level. The overall score ranges from 0 to 15. The higher the score, the greater the severity of the depressive symptoms. | 12 months after the beginning of the intervention |
| Quality of life evaluated through Quality of Life - Alzheimer's Disease: score | Significant statistic improvement in the participant's test scores between pre-intervention assessment and postintervention assessment. Quality of Life - Alzheimer's Disease is an instrument to assess quality of life in people diagnosed with dementia, gathering information from the patient and the caregiver. It is composed by 13 items regarding perception of health, mood, functional abilities, interpersonal relationships and hobbies, decision making ability and life in general. It has good psychometric characteristics and it's use has been recommended to evaluate psychosocial interventions. Scores range between 13 - 52 points. Higher scores indicate better quality of life. | Pre-intervention |
| Change in quality of life evaluated through Quality of Life - Alzheimer's Disease: score | Significant statistic improvement in the participant's test scores between pre-intervention assessment and postintervention assessment. Quality of Life - Alzheimer's Disease is an instrument to assess quality of life in people diagnosed with dementia, gathering information from the patient and the caregiver. It is composed by 13 items regarding perception of health, mood, functional abilities, interpersonal relationships and hobbies, decision making ability and life in general. It has good psychometric characteristics and it's use has been recommended to evaluate psychosocial interventions. Scores range between 13 - 52 points. Higher scores indicate better quality of life. | 6 months after the beginning of the intervention |
| Change in quality of life evaluated through Quality of Life - Alzheimer's Disease: score | Significant statistic improvement in the participant's test scores between pre-intervention assessment and postintervention assessment. Quality of Life - Alzheimer's Disease is an instrument to assess quality of life in people diagnosed with dementia, gathering information from the patient and the caregiver. It is composed by 13 items regarding perception of health, mood, functional abilities, interpersonal relationships and hobbies, decision making ability and life in general. It has good psychometric characteristics and it's use has been recommended to evaluate psychosocial interventions. Scores range between 13 - 52 points. Higher scores indicate better quality of life. | 12 months after the beginning of the intervention |
| Functional status is assessed using the Lawton and Brody Instrumental Activities of Daily Living. | It's an instrument that assesses the independence level of the elderly people regarding IADL's. A score is assigned according to the person's ability to perform a given task. A set of three, four or five options is suggested for each question, which is scored from 1 to 3, 1 to 4 or 1 to 5 points. The highest score corresponds to a greater degree of dependency. If a task does not apply because the person did not perform it in the pre-morbid period, the score for that task is not included in the total score, that is, the maximum possible score includes only the maximum scores of the tasks that the person performed. The score ranges from 8 to 30 points (a score of 8 points means that th person is independent; between 9 and 20 points means a moderate dependency; greater than 20 points means severe dependency). | Pre-intervention |
| Change in functional status is assessed using the Lawton and Brody Instrumental Activities of Daily Living. | It's an instrument that assesses the independence level of the elderly people regarding IADL's. A score is assigned according to the person's ability to perform a given task. A set of three, four or five options is suggested for each question, which is scored from 1 to 3, 1 to 4 or 1 to 5 points. The highest score corresponds to a greater degree of dependency. If a task does not apply because the person did not perform it in the pre-morbid period, the score for that task is not included in the total score, that is, the maximum possible score includes only the maximum scores of the tasks that the person performed. The score ranges from 8 to 30 points (a score of 8 points means that th person is independent; between 9 and 20 points means a moderate dependency; greater than 20 points means severe dependency). | 6 months after the beginning of the intervention |
| Change in functional status is assessed using the Lawton and Brody Instrumental Activities of Daily Living. | It's an instrument that assesses the independence level of the elderly people regarding IADL's. A score is assigned according to the person's ability to perform a given task. A set of three, four or five options is suggested for each question, which is scored from 1 to 3, 1 to 4 or 1 to 5 points. The highest score corresponds to a greater degree of dependency. If a task does not apply because the person did not perform it in the pre-morbid period, the score for that task is not included in the total score, that is, the maximum possible score includes only the maximum scores of the tasks that the person performed. The score ranges from 8 to 30 points (a score of 8 points means that th person is independent; between 9 and 20 points means a moderate dependency; greater than 20 points means severe dependency). | 12 months after the beginning of the intervention |
Adherence to the intervention and dropouts will be assessed using a session form, designed specifically for this study, completed by the technician after each session, regarding the attendance and mood/behavior of the participants throughout the intervention sessions. |
| [Pre, intra (6 months) and post intervention (12 months)] |
| Background |
| Clare L, Woods RT. Cognitive training and cognitive rehabilitation for people with early-stage Alzheimer's disease: A review. Neuropsychological Rehabilitation. 2004; 14: 385-401. https://doi.org/10.1080/09602010443000074 |
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| 11236819 | Background | Davis RN, Massman PJ, Doody RS. Cognitive intervention in Alzheimer disease: a randomized placebo-controlled study. Alzheimer Dis Assoc Disord. 2001 Jan-Mar;15(1):1-9. doi: 10.1097/00002093-200101000-00001. |
| Background | Filipin F, Feldman M, Taragano FE, Martelli M, Sánchez V, García V, … Dillon C. The efficacy of cognitive stimulation on depression and cognition in elderly patients with cognitive impairment: A retrospective cohort study. AIMS Medical Science. 2015; 3(1): 1-14. https://doi.org/10.3934/medsci.2016.1.1 |
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| Background | Lobbia A, Carbone E, Faggian S, Gardini S, Piras F, Spector E, Borella E. The efficacy of cognitive stimulation therapy (CST) for people with mild-to-moderate dementia: A review. European Psychologist. 2018; 24(3): 257-277. https://doi.org/10.1027/1016-9040/a000342 |
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| 18297476 | Background | Moniz-Cook E, Vernooij-Dassen M, Woods R, Verhey F, Chattat R, De Vugt M, Mountain G, O'Connell M, Harrison J, Vasse E, Droes RM, Orrell M; INTERDEM group. A European consensus on outcome measures for psychosocial intervention research in dementia care. Aging Ment Health. 2008 Jan;12(1):14-29. doi: 10.1080/13607860801919850. |
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| Background | Wilson B. Towards a comprehensive model of cognitive rehabilitation. Neuropsychological Rehabilitation. 2002; 12(2): 97-110. https://doi.org/10.1080/09602010244000020 |
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| 35012439 | Derived | Justo-Henriques SI, Perez-Saez E, Marques-Castro AE, Carvalho JO. Effectiveness of a year-long individual cognitive stimulation program in Portuguese older adults with cognitive impairment. Neuropsychol Dev Cogn B Aging Neuropsychol Cogn. 2023 May;30(3):321-335. doi: 10.1080/13825585.2021.2023458. Epub 2022 Jan 11. |
| D003072 | Cognition Disorders |
| D001519 | Behavior |