Alba Ayala

Influencia de los problemas crónicos de salud en las dimensiones del cuestionario EQ-5D: estudio en personas mayores institucionalizadas y no instituzionalizadas

Background: Chronic medical conditions represent risk factors for health related quality of life (HRQOL). The aim of this study is to analyze the influence of self-reported chronic health conditions in HRQOL, measured through the EQ-5D dimensions, in non-institutionalized and institutionalized older adults. Methods: Data were obtained from two studies of quality of life in population aged 60 years or over, in Spain, with a sample of 1,106 community-dwelling adults and 234 residents of care facilities. To analyse the influence of the most prevalent chronic health conditions on HRQOL multiple logistic regression models were adjusted using as dependent variable each EQ-5D dimension, controlling for socio-demographic variables. Results: The chronic health conditions that most influenced the HRQOL of both groups were depression (OR range in the different EQ-5D dimensions: 1.97-6.48), followed by arthrosis/arthritis (OR: 2.81-6.00), sleep problems (OR: 2.81-4.61), diabetes (OR: 1.68-3.44) and hypertension (OR: 1.42-2.45). These problems affected differentially the EQ-5D dimensions and the two groups considered. Pain/discomfort and mobility were the EQ-5D dimensions where more difficulties were reported. Conclusions: The results of this work indicate that the debilitating effect of chronic health conditions on the HRQOL is different for institutionalized and non-institutionalized older adults. They also highlight the importance of promoting healthy ageing to attenuate the negative impact of chronic health conditions on HRQOL in old age.

EQ-5D rated by proxy in institutionalized older adults with dementia: Psychometric pros and cons

Measurement of health‐related quality of life in people with dementia is a challenge, because of their special characteristics and the difficulties that this term entails itself. The present study aimed at assessing the psychometric properties of the EQ‐5D rated by a familiar or a professional caregiver of institutionalized older adults with dementia.

Assessing autonomic symptoms of Parkinson's disease with the SCOPA-AUT: a new perspective from Rasch analysis

Background:  The Scale for Outcomes in Parkinson’s disease (PD) for Autonomic Symptoms (SCOPA‐AUT) is a specific scale to assess autonomic dysfunction in PD patients. It was developed and validated under the classic test theory approach. This study sought to test whether the SCOPA‐AUT meets item response theory standards for reliability, internal construct validity, response category ordering, and differential item functioning by gender and age group.

Multimorbidity and functional status in community-dwelling older adults

BACKGROUND Multimorbidity is common in older people and may contribute to many adverse health events, such as disability. The aim of the study was to investigate how chronic health conditions (single, paired, and grouped) affect functional independence. METHOD We used two samples (a one-time, convenience sample and a nationally representative cross-sectional survey) of community-dwelling people of 65 years old or over, with a total of 2818 subjects in Spain. To assess functional independence, we used the Barthel index, administered as an interview. Information about the presence of 11 chronic health problems was collected by interview or review of their medical chart. Explanatory factor analysis was performed to assess associations between chronic health conditions. RESULTS Diabetes mellitus and hypertension emerged as the pair of chronic health conditions that most affected functional status [OR 1.98; 95% CI (1.51-2.60)], followed by visual and hearing impairment. A synergistic effect was found (p<0.05) for the cardiovascular disease and hypertension pair. Four multimorbidity groups emerged from the factor analysis: sensory and bone; cancer, lung and gastrointestinal; cardiovascular and metabolic; neuropsychiatric disorders. The neuropsychiatric disorders group was the most strongly associated with physical impairment [OR 4.94; 95% CI (2.71-8.99)], followed by the sensory and bones group [OR 1.90; 95% CI (1.56-2.31)]. CONCLUSION Despite its low prevalence, the neuropsychiatric disorders group was most strongly associated with lower functional status. Analysis of the relationship between chronic medical conditions and functional status could be useful to develop primary health care strategies to improve functional independence in older people with comorbidities.

Chronic conditions, disability, and quality of life in older adults with multimorbidity in Spain

BACKGROUND As the population ages, the prevalence of multimorbidity also increases, with consequences to several health outcomes such as disability and quality of life (QoL). This study aimed at analyzing the relationships between chronic conditions, disability, and QoL of older adults with multimorbidity in Spain. METHOD Data on older adults aged 65 years or more, with at least two chronic health conditions were drawn from three cohort studies. Sample size was 705, 443, and 4995, respectively. For each cohort, the impact of the following chronic health conditions was analyzed: asthma, cancer, cardiac, diabetes, hypertension, mental health disorders, osteoarticular conditions, and stroke. Disability and QoL measures varied according to the survey. RESULTS In older adults with multimorbidity, the most prevalent conditions were osteoarticular (59.08-67.80%) and hypertension (50.64-60.03%). The presence of disability was significantly associated to having osteoarticular (OR range: 1.53 to 2.646), diabetes (OR: 1.86 to 1.71), or mental health disorders (OR: 2.19 to 3.36) in most cohorts. Disability (OR: 1.67 to 7.67), osteoarticular conditions (OR: 3.37 to 5.10), and mental health disorders (OR: 1.83 to 4.27) showed the highest effects on lower QoL than the population. CONCLUSION The presence of disability and diverse chronic conditions has a negative effect on QoL of older adults affected by multimorbidity in Spain. Public health and primary care interventions focusing on the integrated care of older adults with multimorbidity might give special attention to mental health and osteoarticular conditions.

Should the SCOPA-COG be modified?: a Rasch analysis perspective

Background and purpose:  The SCales for Outcomes in PArkinson’s disease‐Cognition (SCOPA‐COG) is a specific measure of cognitive function for Parkinson’s disease (PD) patients. Previous studies, under the frame of the classic test theory, indicate satisfactory psychometric properties. The Rasch model, an item response theory approach, provides new information about the scale, as well as results in a linear scale. This study aims at analysing the SCOPA‐COG according to the Rasch model and, on the basis of results, suggesting modification to the SCOPA‐COG.

Quality of life across three groups of older adults differing in cognitive status and place of residence.

Health‐related quality of life (HRQOL) in older adults is determined by personal conditions, as well as by the social and physical environment. The purpose of the present study was to describe the factors related to health conditions and residential environment that influence HRQOL of older adults.

Self-perceived health and quality of life by activity status in community-dwelling older adults.

The present study aimed at analyzing whether activity status is associated with self‐perceived health status and quality of life (QoL) in community‐dwelling older adults.

Which factors are associated with mortality in institutionalized older adults with dementia

Residential facilities are increasingly used as a resource for dependent older adults and a high percentage of patients with dementia die there. Information about the leading medical causes and exposures to risk factors of mortality in institutionalized older patients with dementia could guide the development of clinical management interventions. The data of 387 institutionalized adults aged over 60, diagnosed with dementia, was analyzed retrospectively. Information about sociodemographic, comorbidities, quality of life and leisure and free time variables was collected in a survey answered by caregivers; after 19 months, information was collected on the result variable (living vs. deceased). A multivariate logistic regression model was created to determine the factors associated with mortality, which were: age (odds ratio (OR)=1.986; 95% confidence interval (CI): 1.229-3.209); diabetes (OR=2.322; 1.350-3.996); hypertension (OR=1.695; 1.044-2.752); diseases of the genitourinary system (OR=2.455;1.419-4.248), worsening of health over last twelve months (OR=1.653; 1.018-2.685) and not performing passive (OR=1.616; 0.968-2.700) or social (OR=2.242; 1.170-4.299) leisure activities. Besides age, the number of comorbid illnesses and the inability to perform leisure activities predicted mortality in institutionalized adults with dementia. These predictors might be useful clinical markers for identifying patients at increased risk for mortality.

Rasch analysis of the International Wellbeing Index in older adults

BACKGROUND The International Wellbeing Index is a measure of general quality of life formed by two scales: the Personal Wellbeing Index (PWI) and the National Wellbeing Index (NWI). This paper studies the psychometric properties of the PWI and NWI, using Rasch analysis and classic psychometric methods. METHODS The PWI and NWI were applied to a representative sample of 1106 community-dwelling adults, aged 60 years and over, residing in Spain. Mean ± standard deviation age was 72.07 ± 7.83 years and 56.3% were women. RESULTS Five PWI items (achieving in life, relationships, safety, community connectedness, and future security), and five NWI items (economic situation, state of environment, social conditions, business, and national security of the country) fitted the Rasch model. After adjusting the response scale format, satisfactory fit was obtained, with good reliability (person separation index of 0.91 for both the PSI and NWI), local independency of items, and strict unidimensionality. The measures showed adequate external construct validity with related measures. CONCLUSIONS The PWI and the NWI, with fewer items and simpler response scale formats, provided valid and reliable linear measures in older adults, according to Rasch and classic psychometric analyses.