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1.
Age Ageing ; 45(2): 280-6, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26656237

RESUMEN

OBJECTIVE: the objectives of this study were: (i) to estimate the rate of discrepancy between participant single-item self-reports of good memory and poor performance on a list-learning task and (ii) to identify the factors including age, gender and health status that influence these discrepant classifications. STUDY DESIGN AND SETTINGS: in total, 14,172 individuals, aged 45-85, were selected from the 2008-09 Canadian Community Health Survey on Healthy Aging. We examined the individual characteristics of participants with and without discrepancies between memory self-reports and performance with a generalised linear model, adjusting for potential covariates. RESULTS: the mean age of respondents was 62.9 years with 56.7% being female, 53.8% having post-secondary graduation and 83% being born in Canada. Higher discrepant classification rates we observed for younger people (6.77 versus 3.65 for lowest and highest group), female (5.90 versus 3.68) and with higher education (6.17 versus 3.52). Discrepant classification rates adjusted with all covariates were higher for those without chronic diseases (5.37 [95% Confidence Interval (CI): 4.16, 6.90] versus 4.05 95% CI: 3.38, 4.86; P = 0.0127), those who did not drink alcohol (5.87 95% CI: 4.69, 7.32 versus 3.70 95% CI: 3.00, 4.55; P < 0.0001), lonely participants (5.45 95% CI: 4.20, 7.04 versus 3.99 95% CI: 3.36, 4.77; P = 0.0081) and bilingual participants (5.67 95% CI: 4.18, 7.64 versus 3.83 95% CI: 3.27, 4.50; P = 0.0102). CONCLUSION: the findings of this study suggest that the self-reported memory and memory performance differ in a substantial proportion of the population. Therefore, relying on a self-reported memory status may not accurately capture those experiencing memory difficulties.


Asunto(s)
Envejecimiento/psicología , Trastornos de la Memoria/psicología , Recuerdo Mental , Autoinforme , Factores de Edad , Anciano , Anciano de 80 o más Años , Consumo de Bebidas Alcohólicas/efectos adversos , Consumo de Bebidas Alcohólicas/psicología , Canadá/epidemiología , Distribución de Chi-Cuadrado , Femenino , Encuestas Epidemiológicas , Humanos , Aprendizaje , Estilo de Vida , Modelos Lineales , Soledad , Masculino , Trastornos de la Memoria/diagnóstico , Trastornos de la Memoria/epidemiología , Persona de Mediana Edad , Análisis Multivariante , Pruebas Neuropsicológicas , Valor Predictivo de las Pruebas , Reproducibilidad de los Resultados , Factores de Riesgo , Factores Socioeconómicos
2.
J Int Neuropsychol Soc ; 20(2): 157-67, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24352047

RESUMEN

The impact of stereotype threat and self-efficacy beliefs on neuropsychological test performance in a clinical traumatic brain injury (TBI) population was investigated. A total of 42 individuals with mild-to-moderate TBI and 42 (age-, gender-, educationally matched) healthy adults were recruited. The study consisted of a 2 (Type of injury: control, TBI) × 2 (Threat Condition: reduced threat, heightened threat) between-participants design. The purpose of the reduced threat condition was to reduce negative stereotyped beliefs regarding cognitive effects of TBI and to emphasize personal control over cognition. The heightened threat condition consisted of an opposing view. Main effects included greater anxiety, motivation, and dejection but reduced memory self-efficacy for head-injured-groups, compared to control groups. On neuropsychological testing, the TBI-heightened-threat-group displayed lower scores on Initial Encoding (initial recall) and trended toward displaying lower scores on Attention (working memory) compared to the TBI-reduced-threat-group. No effect was found for Delayed Recall measures. Memory self-efficacy mediated the relation between threat condition and neuropsychological performance, indicating a potential mechanism for the threat effect. The findings highlight the impact of stereotype threat and self-referent beliefs on neuropsychological test performance in a clinical TBI population.


Asunto(s)
Lesiones Encefálicas/complicaciones , Trastornos del Conocimiento , Cultura , Conducta Estereotipada/fisiología , Adulto , Análisis de Varianza , Lesiones Encefálicas/psicología , Trastornos del Conocimiento/diagnóstico , Trastornos del Conocimiento/etiología , Trastornos del Conocimiento/psicología , Emociones , Femenino , Desamparo Adquirido , Humanos , Masculino , Persona de Mediana Edad , Motivación , Pruebas Neuropsicológicas , Análisis de Regresión , Autoimagen , Adulto Joven
3.
Artículo en Inglés | MEDLINE | ID: mdl-37934029

RESUMEN

OBJECTIVES: Baltes and Baltes' "selective optimization with compensation" model is pertinent to driving but evidence about the use of compensation using longitudinal designs is scarce. Therefore, we sought to determine if older drivers reduced their engagement in distracting behaviors while driving, over a 6-year period. METHODS: We used data captured over several annual assessments from a cohort of 583 drivers aged 70 and older to determine if their engagement in 12 distracting behaviors (e.g., listening to the radio, talking with passengers) declined over time. We adjusted our multivariable model for several potential confounders of the association between our outcome variable and time. RESULTS: Overall, and after adjustment for potential confounders, the participants reduced their engagement in distracting behaviors over the study period (odds ratio [OR] = 0.96, 95% confidence interval [CI] = 0.95-0.97). Baseline age was negatively associated with engagement in distracting behaviors (OR = 0.95, 95% CI = 0.94-0.96). Men engaged in more distracting behaviors than women (OR = 1.15, 95% CI = 1.03-1.27), as did participants living in the largest urban centers compared to participants living in the smallest areas (OR = 1.21, 95% CI = 1.04-1.41). The number of kilometers driven per year (for every 10,000 km) was positively associated with the proportion of distracting behaviors drivers engaged in (OR = 1.13, 95% CI = 1.08-1.19). DISCUSSION: Drivers in our cohort reduced their engagement in distracting behaviors over the study period. This suggests that older drivers adjust their driving over time, which aligns with age-related theories and models about compensation.


Asunto(s)
Conducción de Automóvil , Masculino , Humanos , Femenino , Anciano , Anciano de 80 o más Años , Estudios Longitudinales , Recolección de Datos
4.
J Gerontol A Biol Sci Med Sci ; 78(12): 2348-2355, 2023 12 01.
Artículo en Inglés | MEDLINE | ID: mdl-36794785

RESUMEN

BACKGROUND: Assessing an older adult's fitness-to-drive is an important part of clinical decision making. However, most existing risk prediction tools only have a dichotomous design, which does not account for subtle differences in risk status for patients with complex medical conditions or changes over time. Our objective was to develop an older driver risk stratification tool (RST) to screen for medical fitness-to-drive in older adults. METHODS: Participants were active drivers aged 70 and older from 7 sites across 4 Canadian provinces. They underwent in-person assessments every 4 months with an annual comprehensive assessment. Participant vehicles were instrumented to provide vehicle and passive Global Positioning System (GPS) data. The primary outcome measure was police-reported, expert-validated, at-fault collision adjusted per annual kilometers driven. Predictor variables included physical, cognitive, and health assessment measures. RESULTS: A total of 928 older drivers were recruited for this study beginning in 2009. The average age at enrollment was 76.2 (standard deviation [SD] = 4.8) with 62.1% male participants. The mean duration for participation was 4.9 (SD = 1.6) years. The derived Candrive RST included 4 predictors. Out of 4 483 person-years of driving, 74.8% fell within the lowest risk category. Only 2.9% of person-years were in the highest risk category where the relative risk for at-fault collisions was 5.26 (95% confidence interval = 2.81-9.84) compared to the lowest risk group. CONCLUSIONS: For older drivers whose medical conditions create uncertainty regarding their fitness-to-drive, the Candrive RST may assist primary health care providers when initiating a conversation about driving and to guide further evaluation.


Asunto(s)
Conducción de Automóvil , Humanos , Masculino , Anciano , Anciano de 80 o más Años , Femenino , Conducción de Automóvil/psicología , Accidentes de Tránsito/prevención & control , Canadá/epidemiología , Examen Físico , Medición de Riesgo
5.
Int J Behav Nutr Phys Act ; 9: 148, 2012 Dec 18.
Artículo en Inglés | MEDLINE | ID: mdl-23245612

RESUMEN

BACKGROUND: Due to physiological and cognitive changes that occur with aging, accurate physical activity (PA) measurement in older adults represents a unique challenge. The primary purpose of this study was to systematically review measures of PA and their use and appropriateness with older adults. A secondary aim was to determine the level of agreement between PA measures in older adults. METHODS: Literature was identified through electronic databases. Studies were eligible if they examined the correlation and/or agreement between at least 2 measures, either indirect and/or direct, of PA in older adults (> 65 years of age). RESULTS: Thirty-six studies met eligibility criteria. The indirect and direct measures of PA across the studies differed widely in their ability to address the key dimensions (i.e., frequency, intensity, time, type) of PA in older adults. The average correlation between indirect and direct measures was moderate (r=0.38). The correlation between indirect and other indirect measures (r=0.29) was weak, while correlations between direct measures with other direct measures were high (real world: r= 0.84; controlled settings: r=0.92). Agreement was strongest between direct PA measures with other direct measures in both real world and laboratory settings. While a clear trend regarding the agreement for mean differences between other PA measures (i.e., direct with indirect, indirect with indirect) did not emerge, there were only a limited number of studies that reported comparable units. CONCLUSIONS: Despite the lack of a clear trend regarding the agreement between PA measures in older adults, the findings underscore the importance of valid, accurate and reliable measurement. To advance this field, researchers will need to approach the assessment of PA in older adults in a more standardized way (i.e., consistent reporting of results, consensus over cut-points and epoch lengths, using appropriate validation tools). Until then researchers should be cautious when choosing measures for PA that are appropriate for their research questions and when comparing PA levels across various studies.


Asunto(s)
Ejercicio Físico , Evaluación Geriátrica/métodos , Anciano , Humanos
6.
Prev Med ; 54(5): 309-12, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22405707

RESUMEN

OBJECTIVE: The promotion of dog walking among owners who do not walk their dogs regularly may be a viable physical activity intervention aperture, yet research is very limited and no intervention studies have employed control groups. Therefore, the purpose of this pilot study was to examine the viability of dog walking for physical activity intervention using messages targeting canine exercise. METHOD: Inactive dog owners (n=58) were randomized to either a standard control condition or the intervention (persuasive material about canine health from walking and a calendar to mark walks) after completing a baseline questionnaire package and wearing a pedometer for one week. Participants (standard condition n=28; intervention condition n=30) completed the six and 12 week follow-up questionnaire packages. RESULTS: Intention to treat analyses showed that both groups increased physical activity significantly across the 12 weeks (η(2)=0.09 to 0.21). The intervention group resulted in significantly higher step-counts compared to the control group (Δ 1823 steps) and showed significantly higher trajectories from baseline to 12 weeks in the self-reported physical activity measures (η(2)=0.11 to 0.27). CONCLUSION: The results are promising for the viability of increasing dog walking as a means for physical activity promotion and suggest that theoretical fidelity targeting canine exercise may be a helpful approach.


Asunto(s)
Actividades Cotidianas/psicología , Conductas Relacionadas con la Salud , Promoción de la Salud/métodos , Evaluación de Resultado en la Atención de Salud , Mascotas , Caminata , Adulto , Animales , Colombia Británica , Perros , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Monitoreo Ambulatorio/psicología , Monitoreo Ambulatorio/estadística & datos numéricos , Proyectos Piloto , Conducta Sedentaria , Encuestas y Cuestionarios , Factores de Tiempo , Caminata/fisiología , Caminata/psicología , Caminata/estadística & datos numéricos
7.
Int Psychogeriatr ; 24(11): 1738-48, 2012 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-22651993

RESUMEN

BACKGROUND: Many scoring systems exist for clock drawing task variants, which are common dementia screening measures, but all have been derived from clinical samples. This study evaluates and combines errors from two published scoring systems for the Clock Drawing Test (CDT), the Lessig and Tuokko methods, in order to create a simple yet optimal scoring procedure to screen for dementia using a Canadian population-based sample. METHODS: Clock-drawings from 356 participants (80 with dementia, 276 healthy controls) from the Canadian Study on Health and Aging were analyzed using logistic regression and Receiver Operating Characteristic curves to determine a new, simplified, population-based CDT scoring system. The new Jouk scoring method was then compared to other commonly used systems (e.g. Shulman, Tuokko, Watson, Wolf-Klein). RESULTS: The Jouk scoring system reduced the Lessig system even further to include five critical errors: missing numbers, repeated numbers, number orientation, extra marks, and number distance, and produced a sensitivity of 81% and a specificity of 68% with a cut-off score of one error. With regard to other traditionally used scoring methods, the Jouk procedure had one of the most balanced sensitivities/specificities when using a population-based sample. CONCLUSIONS: The results from this study improve our current state of knowledge concerning the CDT by validating the simplified scoring system proposed by Lessig and her colleagues in a more representative sample to mimic conditions a general clinician or researcher will encounter when working among a wide-ranging population and not a dementia/memory clinic. The Jouk CDT scoring system provides further evidence in support of a simple and reliable dementia-screening tool that can be used by clinicians and researchers alike.


Asunto(s)
Demencia , Evaluación Geriátrica , Pruebas de Inteligencia/normas , Tamizaje Masivo , Pruebas Neuropsicológicas/normas , Curva ROC , Factores de Edad , Anciano , Anciano de 80 o más Años , Envejecimiento , Sesgo , Canadá/epidemiología , Demencia/diagnóstico , Demencia/epidemiología , Demencia/psicología , Errores Diagnósticos/prevención & control , Escolaridad , Femenino , Evaluación Geriátrica/clasificación , Evaluación Geriátrica/métodos , Encuestas Epidemiológicas , Humanos , Modelos Logísticos , Masculino , Tamizaje Masivo/métodos , Tamizaje Masivo/normas , Valor Predictivo de las Pruebas , Proyectos de Investigación
8.
J Appl Gerontol ; 41(5): 1274-1282, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-35238672

RESUMEN

We examined the positive association between perceived community age-friendliness and self-reported quality of life for older adults. A total of 171 participants, aged 77-96 years, completed a mail-in questionnaire package that included measures of health (SF-36 Physical), social participation (Social Participation Scale), community age-friendliness (Age-Friendly Survey [AFS]), and quality of life (WHO Quality of Life). Hierarchical regression models including age, gender, driving status, finances, health, social participation, and AFS scores explained 8 to 21 per cent of the variance in quality of life scores. Community age-friendliness was a statistically significant variable in all models, accounting for three to six and a half per cent of additional variance in quality of life scores. Although the proportion of variance explained by age-friendliness was small, our findings suggest that it is worthwhile to further investigate whether focused, age-friendly policies, interventions, and communities could play a role towards successful and healthy aging.


Asunto(s)
Envejecimiento Saludable , Calidad de Vida , Anciano , Humanos , Autoinforme , Participación Social , Encuestas y Cuestionarios
9.
Clin Neuropsychol ; 36(8): 2168-2187, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-34470568

RESUMEN

Objective: Creation of normative data with regression corrections for demographic covariates reduces risk of small cell sizes compared with traditional normative approaches. We explored whether methods of correcting for demographic covariates (e.g., full regression models versus hybrid models with stratification and regression) and choice of covariates (i.e., correcting for age with or without sex and/or education correction) impacted reliability and validity of normative data. Method: Measurement invariance for sex and education was explored in a brief telephone-administered cognitive battery from the Canadian Longitudinal Study on Aging (CLSA; after excluding persons with neurological conditions N = 12,350 responded in English and N = 1,760 in French). Results: Measurement invariance was supported in hybrid normative models where different age-based regression models were created for groups based on sex and education level. Measurement invariance was not supported in full regression models where age, sex, and education were simultaneous predictors. Evidence for reliability was demonstrated by precision defined as the 95% inter-percentile range of the 5th percentile. Precision was higher for full regression models than for hybrid models but with negligible differences in precision for the larger English sample. Conclusions: We present normative data for a remotely administered brief neuropsychological battery that best mitigates measurement bias and are precise. In the smaller French speaking sample, only one model reduced measurement bias, but its estimates were less precise, underscoring the need for large sample sizes when creating normative data. The resulting normative data are appended in a syntax file.


Asunto(s)
Envejecimiento , Humanos , Estudios Longitudinales , Pruebas Neuropsicológicas , Reproducibilidad de los Resultados , Canadá , Envejecimiento/psicología
10.
Can Geriatr J ; 24(3): 222-236, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-34484505

RESUMEN

BACKGROUND AND OBJECTIVES: While a range of psychotherapeutic interventions is available to support individuals with dementia, comprehensive reviews of interventions are limited, particularly with regard to outcomes related to adjustment and acceptance. The current review assesses studies that evaluated the impact of various forms of psychotherapeutic interventions on acceptance and adjustment to changing life circumstances for older adults with cognitive impairment. RESEARCH DESIGN AND METHODS: A systematic search of PubMed, PsycINFO, and CINAHL databases was conducted, restricted to articles published in English within the last 16 years (from 2003 to 2019). Twenty-four articles were identified that examined the effects of psychotherapeutic interventions on outcomes related to acceptance and adjustment which included internalizing symptoms, quality of life, self-esteem, and well-being. Fifteen studies examined interventions targeted towards individuals with cognitive impairment, while nine studies also targeted their caregivers. RESULTS: Interventions that impacted outcomes related to acceptance and adjustment (e.g., adaptation, depressive symptoms, helplessness, self-esteem, and quality of life) varied in their theoretical approach, which incorporated elements of cognitive behavioural therapy (CBT), problem-solving therapy, psychotherapy, reminiscence therapy, interpersonal therapy, mindfulness-based therapy, and meaning-based, compassion-focused therapy. Among all interventions, reductions in depression were the most commonly reported treatment outcome particularly among interventions that incorporated problem-focused and meaning-based therapies. Mixed findings were reported with regard to outcomes related to helplessness, quality of life, self-esteem, and life satisfaction indices for individuals with cognitive impairment. DISCUSSION AND IMPLICATIONS: There is some support for the effectiveness of psychotherapeutic interventions on improving acceptance and adjustment in older adults with cognitive impairment, particularly with regard to reducing depressive symptoms.

11.
Neuroepidemiology ; 35(4): 298-302, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20962538

RESUMEN

BACKGROUND: We evaluated the utility of the telephone-administered Mental Alternation Test (MAT, an oral variant of the Trail-Making Test) for remote assessment of cognitive functioning in older adults. We examined (1) the sensitivity of MAT scores to cognitive change across 4 age groups, (2) practice effects associated with repeat administration, and (3) the uniformity of practice effects across age groups. METHODS: Community-dwelling volunteers were recruited randomly and categorized as young-middle-aged (45-54 years; n = 51), middle-aged (55-64 years; n = 58), young-old (65-74 years; n = 43) or old-old (75-85 years; n = 43). The participants completed the MAT twice within 2 weeks. The data were analyzed using mixed ANOVA. RESULTS: We found an effect of age on MAT performance [F(3, 191) = 11.37; p < 0.001], with planned comparisons revealing significantly lower scores in the old-old (p < 0.05). The scores on the second MAT administration were significantly higher than on the first administration [F(1, 191) = 12.82; p < 0.001], but this practice effect did not differ across age groups. CONCLUSIONS: The MAT was sensitive to cognitive decline in older adulthood. Practice effects were measurable but uniform across the observed age cohorts. As a brief telephone-administered test, the MAT represents a promising measure of cognitive functioning in older adults that is feasible for use in large-scale epidemiological studies.


Asunto(s)
Envejecimiento/psicología , Trastornos del Conocimiento/diagnóstico , Entrevistas como Asunto , Pruebas Neuropsicológicas/normas , Factores de Edad , Anciano , Anciano de 80 o más Años , Análisis de Varianza , Estudios de Cohortes , Estudios Transversales , Estudios de Factibilidad , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Sensibilidad y Especificidad
12.
Can J Aging ; 29(2): 173-83, 2010 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-20478080

RESUMEN

Using a case scenario involving a marginally competent elderly woman living alone at risk, we assessed the care decisions made by older adults (n = 82) and health care professionals (HCPs, n = 87), and identified differences in the values underlying the care decisions. Overall, participants did not place a high value on independence when they appraised the risk to the client as high and safety as low. Under these conditions, elderly respondents tended to be more paternalistic in their decisions about care, while HCPs tended to be more beneficient. If the values of HCPs differ from those of elderly people, how likely is it that the care provided to marginally competent elderly people will be congruent with their wishes? The care provided by HCPs might be improved by incorporating knowledge of the values and perspectives of other older adults.


Asunto(s)
Toma de Decisiones , Evaluación Geriátrica , Personal de Salud , Competencia Mental , Medición de Riesgo , Adulto , Anciano , Actitud del Personal de Salud , Beneficencia , Femenino , Humanos , Higiene , Vida Independiente , Masculino , Persona de Mediana Edad , Paternalismo , Seguridad , Muestreo , Valores Sociales
13.
Clin Neuropsychol ; 34(1): 174-203, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-30638131

RESUMEN

Objective: We present descriptive information on the cognitive measures used in the Canadian Longitudinal Study on Aging (CLSA) Comprehensive Cohort, relate this to information on these measures in the extant literature, and identify key considerations for their use in research and clinical practice.Method: The CLSA Comprehensive Cohort is composed of 30,097 participants aged 45-85 years at baseline who provided a broad range of sociodemographic, physical, social, and psychological health information via questionnaire and took part in detailed physical and cognitive assessments. Cognitive measures included: the Rey Auditory Verbal Learning Test - immediate and 5-min delayed recall, Animal Fluency, Mental Alternation Test (MAT), Controlled Oral Word Association Test (COWAT), Stroop Test - Victoria Version, Miami Prospective Memory Test (MPMT), and a Choice Reaction Time (CRT) task.Results: CLSA Comprehensive Cohort sample sizes were far larger than previous studies, and performances on the cognitive measures were similar to comparable groups. Within the CLSA Comprehensive Cohort, main effects of age were observed for all cognitive measures, and main effects of language were observed for all measures except the CRT. Interaction effects (language × age) were observed for the MAT, MPMT Event-based score, all time scores on the Stroop Test, and most COWAT scores. Main effects of education were observed for all measures except for the MPMT Time score in the French sample, and interaction effects (age × education) were observed for the RAVLT (immediate and delayed) for the English sample and the Stroop Dot time for the French sample.Conclusion: This examination of the cognitive measures used in the CLSA Comprehensive Cohort lends support to their use in large studies of health and aging. We propose further exploration of the cognitive measures within the CLSA to make this information relevant to and available for clinical practice.


Asunto(s)
Envejecimiento/psicología , Cognición/fisiología , Anciano , Anciano de 80 o más Años , Canadá , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad
14.
Can J Aging ; 39(3): 385-392, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32723412

RESUMEN

The purpose of this study was to examine whether vehicle type based on size (car vs. other = truck/van/SUV) had an impact on the speeding, acceleration, and braking patterns of older male and female drivers (70 years and older) from a Canadian longitudinal study. The primary hypothesis was that older adults driving larger vehicles (e.g., trucks, SUVs, or vans) would be more likely to speed than those driving cars. Participants (n = 493) had a device installed in their vehicles that recorded their everyday driving. The findings suggest that the type of vehicle driven had little or no impact on per cent of time speeding or on the braking and accelerating patterns of older drivers. Given that the propensity for exceeding the speed limit was high among these older drivers, regardless of vehicle type, future research should examine what effect this behaviour has on older-driver road safety.


Asunto(s)
Conducción de Automóvil/estadística & datos numéricos , Automóviles/clasificación , Anciano , Anciano de 80 o más Años , Conducción de Automóvil/legislación & jurisprudencia , Automóviles/estadística & datos numéricos , Canadá , Femenino , Humanos , Estudios Longitudinales , Masculino
15.
J Int Neuropsychol Soc ; 15(3): 416-25, 2009 May.
Artículo en Inglés | MEDLINE | ID: mdl-19402928

RESUMEN

Neuropsychological batteries are often translated for use across populations differing in preferred language. Yet, equivalence in construct measurement across groups cannot be assumed. To address this issue, we examined data from the Canadian Study of Health and Aging, a large study of older adults. We tested the hypothesis that the latent variables underlying the neuropsychological battery administered in French or English were the same (invariant). The best-fitting baseline model, established in the English-speaking Exploratory sample (n = 716), replicated well in the English-speaking Validation sample (n = 715), and the French-speaking sample (FS, n = 446). Across the English- and FSs, two of the factors, Long-term Retrieval and Visuospatial speed, displayed invariance, that is, reflected the same constructs measured in the same scales. In contrast, the Verbal Ability factor showed only partial invariance, reflecting differences in the relative difficulty of some tests of language functions. This empirical demonstration of partial measurement invariance lends support to the continued use of these translated measures in clinical and research contexts and illustrates a framework for detailed evaluation of the generality of models of cognition and psychopathology, across groups of any sort.


Asunto(s)
Envejecimiento/fisiología , Trastornos del Conocimiento/diagnóstico , Comparación Transcultural , Lenguaje , Pruebas Neuropsicológicas , Traducción , Anciano , Anciano de 80 o más Años , Canadá , Análisis Factorial , Femenino , Humanos , Masculino , Modelos Estadísticos
16.
Can J Aging ; 28(3): 221-9, 2009 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-19860977

RESUMEN

ABSTRACTCanadians are living longer, and older persons are making up a larger share of the population (14% in 2006, projected to rise to 20% by 2021). The Canadian Longitudinal Study on Aging (CLSA) is a national longitudinal study of adult development and aging that will recruit 50,000 Canadians aged 45 to 85 years of age and follow them for at least 20 years. All participants will provide a common set of information concerning many aspects of health and aging, and 30,000 will undergo an additional in-depth examination coupled with the donation of biological specimens (blood and urine). The CLSA will become a rich data source for the study of the complex interrelationship among the biological, physical, psychosocial, and societal factors that affect healthy aging.


Asunto(s)
Envejecimiento , Diseño de Investigaciones Epidemiológicas , Estudios Longitudinales , Anciano , Anciano de 80 o más Años , Biomarcadores , Canadá , Femenino , Conductas Relacionadas con la Salud , Servicios de Salud/estadística & datos numéricos , Humanos , Estilo de Vida , Masculino , Salud Mental , Persona de Mediana Edad , Pruebas Neuropsicológicas , Examen Físico , Apoyo a la Investigación como Asunto , Apoyo Social
17.
Psychol Assess ; 31(9): 1081-1091, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31135167

RESUMEN

Large-scale studies present the opportunity to create normative comparison standards relevant to populations. Sampling weights applied to the sample data facilitate extrapolation to the population of origin, but normative scores are often developed without the use of these sampling weights because the values derived from large samples are presumed to be precise estimates of the population parameter. The present article examines whether applying sample weights in the context of deriving normative comparison standards for measures of cognition would affect the distributions of regression-based normative data when using data from a large population-based study. To address these questions, we examined 3 cognitive measures from the Canadian Longitudinal Study on Aging tracking cohort (N = 14,110, Age 45-84 years at recruitment): Rey Auditory Verbal Learning Test - Immediate Recall, Animal Fluency, and the Mental Alternation Test. The use of sampling weights resulted in similar model parameter estimates to unweighted regression analyses and similar cumulative frequency distributions to the unweighted analyses. We randomly sampled progressively smaller subsets from the full database to test the hypothesis that sampling weights would help maintain the estimates from the full sample, but discovered that the weighted and unweighted estimates were similar and were less precise with smaller samples. These findings suggest that although use of sampling weights can help mitigate biases in data from sampling procedures, the application of weights to adjust for sampling biases do not appreciably impact the normative data, which lends support to the current practice in creation of normative data. (PsycINFO Database Record (c) 2019 APA, all rights reserved).


Asunto(s)
Cognición , Pruebas Neuropsicológicas , Proyectos de Investigación , Anciano , Anciano de 80 o más Años , Sesgo , Canadá , Interpretación Estadística de Datos , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Modelos Estadísticos , Valores de Referencia
18.
Clin Neuropsychol ; 33(1): 137-165, 2019 01.
Artículo en Inglés | MEDLINE | ID: mdl-29431015

RESUMEN

OBJECTIVE: The aim of this study was to verify the effect of age, education and sex on Miami Prospective Memory Test (MPMT) performance obtained at baseline of the Canadian Longitudinal Study on Aging (CLSA) by neurologically healthy French- and English-speaking subsamples of participants (N = 18,511). METHOD: The CLSA is a nation-wide large epidemiological study with participants aged 45-85 years old at baseline. The MPMT is an event- and time-based measure of prospective memory, with scores of intention, accuracy and need for reminders, administered as part of the Comprehensive data collection. Participants who did not self-report any conditions that could impact cognition were selected, which resulted in 15,103 English- and 3408 French-speaking participants. The samples are stratified according to four levels of education and four age groups (45-54; 55-64; 65-74; 75+). RESULTS: There is a significant age effect for English- and French-speaking participants on the Event-based, Time-based, and Event- + Time-based scores of the MPMT. The effect of the education level was also demonstrated on the three MPMT scores in the English-speaking group. The score 'Intention to perform' was the most sensitive to the effect of age in both the English and French samples. Sex had no impact on performance on the MPMT. CONCLUSIONS: This study confirms the impact of age and level of education on this new prospective memory task. It informs future research with this measure including the development of normative data in French- and English-speaking Canadians on the Event-based and Time-based MPMT.


Asunto(s)
Memoria Episódica , Pruebas Neuropsicológicas/normas , Anciano , Anciano de 80 o más Años , Envejecimiento , Canadá , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Estudios Prospectivos
19.
Accid Anal Prev ; 123: 132-139, 2019 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-30481684

RESUMEN

The current study aimed to: 1. to confirm the 21-item, three-factor Driver Behaviour Questionnaire (DBQ) structure suggested by Koppel et al. (2018) within an independent sample of Canadian older drivers; 2. to examine whether the structure of the DBQ remained stable over a four-year period; 3. to conduct a latent growth analysis to determine whether older drivers' DBQ scores changed across time. Five hundred and sixty Canadian older drivers (males = 61.3%) from the Candrive/Ozcandrive longitudinal study completed the DBQ yearly for four years across five time-points that were approximately 12 months apart. In Year 1, the average age of the older drivers was 76.0 years (SD = 4.5 years; Range = 70-92 years). Findings from the study support the 21-item, three-factor DBQ structure suggested by Koppel and colleagues for an Australian sample of older drivers as being acceptable in an independent sample of Canadian older drivers. In addition, Canadian older drivers' responses to this version of the DBQ were stable across the five time-points. More specifically, there was very little change in older drivers' self-reported violations, and no significant change for self-reported errors or lapses. The findings from the current study add further support for this version of the DBQ as being a suitable tool for examining self-reported aberrant driving behaviours in older drivers. Future research should investigate the relationship between older drivers' self-reported aberrant driving behaviours and their performance on functional measures, their responses to other driving-related abilities and practice scales and/or questionnaires, as well their usual (or naturalistic) driving practices and/or performance on on-road driving tasks.


Asunto(s)
Conducción de Automóvil/psicología , Autoinforme/normas , Distribución por Edad , Anciano , Anciano de 80 o más Años , Australia , Conducción de Automóvil/estadística & datos numéricos , Canadá , Femenino , Humanos , Estudios Longitudinales , Masculino , Asunción de Riesgos , Encuestas y Cuestionarios
20.
Prev Med ; 47(3): 335-7, 2008 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-18440058

RESUMEN

PURPOSE: The present pilot study examines the impact of group transit training for older adults in Victoria, British Columbia, Canada, between 2005 and 2006. METHODS: Data were collected from 41 participants, randomly assigned to three groups: 1) a control group that received no group transit training or free bus pass, 2) a group receiving group transit training only, and 3) a group receiving group transit training and a free bus pass. Participants were followed longitudinally for 1 year. RESULTS: No differences were found between groups in days or miles driven per week when comparing self-reported data prior to and 3 months following the intervention. However, there was a difference in self-reported bus use across groups; both groups who received group transit training used the bus more frequently, X(2) (2)=10.89, p<.01. CONCLUSION: This preliminary investigation suggests that transit training may be effective at increasing the use of public transportation for older adults.


Asunto(s)
Conducción de Automóvil/estadística & datos numéricos , Vehículos a Motor/economía , Vehículos a Motor/estadística & datos numéricos , Transportes/estadística & datos numéricos , Factores de Edad , Anciano , Anciano de 80 o más Años , Conducción de Automóvil/normas , Colombia Británica , Femenino , Geriatría , Humanos , Estudios Longitudinales , Masculino , Proyectos Piloto , Salud Pública , Seguridad , Encuestas y Cuestionarios , Factores de Tiempo
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