Associations of neuroticism with falls in older adults: do psychological factors mediate the association?

Cognitive correlates of caregiver fear of falling

OBJECTIVES

Fear of falling is prevalent among older adults and is associated with increased morbidity and mortality. Caregivers have a heightened risk of fear of falling due to the strenuous activities inherent in the caregiving relationship and potential exposure to falls by the care recipient. Cognition is associated with fear of falling; however, cognition's relationship with fear of falling is unclear in the caregiver population. The present study investigated the potential influence of cognitive function on fear of falling in a sample of informal caregivers (n = 50) of persons with a diagnosis of traumatic brain injury or dementia.

METHOD

Cognitive domains of interest included attention, executive function, processing speed, and learning and memory. Worry was assessed with the Penn State Worry Questionnaire and fear of falling was assessed with the Short Falls Efficacy Scale. Hypotheses were tested using hierarchical linear regressions.

RESULTS

Executive function had a significant negative association with fear of falling, while processing speed and learning and memory did not. Attention trended toward significance.

CONCLUSION

Findings support fear of falling as a potential situational anxiety construct and executive functioning as a potential cognitive correlate of fear of falling among caregivers.

A multiple correspondence analysis of the fear of falling, sociodemographic, physical and mental health factors in older adults

Fear of falling (FoF) is a disabling condition due to different factors. The present study assessed potential FoF predictors, among sociodemographic, physical, and mental health domains, and explored their structural patterns. This cross-sectional study is part of the Physical Activity Promotion & Domestic Accidents Prevention (PAP & DAP) project, and was targeted to a sample of 229 independent older people (M 14.0%, F 86.0%) aged over 60 (mean 70.5 ± 5.96), both normal and overweight (median BMI 25.8 kg/m2, Interquartile Range 5.24). Standardized tools were used to assess the variables: the Short Falls Efficacy Scale International for the FoF; an information questionnaire for the socio-demographic variables, the presence of diseases, and previous falls; the International Physical Activity Questionnaire for the PA level; the Senior Fitness Test for physical fitness data; the Short Form 12 questionnaire for variables in the mental domain; and the Psychological Well-Being Scale 24 for the psychological well-being. Correlation/regression analyses were used to explore relationships between FoF and the considered variables. A Multiple Correspondence Analysis (MCA) was conducted to show graphical patterns projected into space dimensions. A percentage of 59.0 of the sample showed moderate/high concern of falling. The multiple regression model showed the following variables being significant predictors (p < 0.05) of the FoF: BMI (coeff 0.44, SE 0.104), musculoskeletal disease (1.55, 0.681), upper body strength (0.33, 0.117), mobility and balance (0.76, 0.320), perceived physical health (- 0.21, 0.047), and self-acceptance (- 0.52, 0.190). MCA evidenced two dimensions: the first one explained 41.8% of the variance and was described mostly by FoF (square residuals 0.721), gender (0.670), leg strength (0.617), perceived mental health (0.591), musculoskeletal diseases (0.572), and PA level (0.556); the second dimension (12.3% of the variance), was characterized mainly by perceived physical health (0.350), life objectives (0.346), education (0.301), upper body strength (0.278), and living in family/alone (0.260). The pattern elicited by MCA was characterized by older subjects with moderate/high FoF having low education or no occupation, being overweight and inactive, suffering from different diseases, having low physical fitness, and declaring low perceived physical and mental health. These results suggest that interventions aimed at reducing FoF should be addressed to this specific profile of older people.

Association between personality traits and concerns about falling among older patients: the mediating role of subjective age

Background

Older patients are at high risk of falling, and regular assessments of their concerns about falling (CaF) are often recommended. The present study aimed to investigate the association between CaF and personality traits among older patients as well as to elucidate the mediating role of subjective age.

Method

A cross-sectional study was conducted among 407 patients aged over 60 years in a tertiary hospital located in Chengdu, Sichuan Province, from March 2023 to May 2023. Predesigned electronic questionnaires were distributed to collect relevant data. Four different models (both crude and adjusted weighted linear regression models) were constructed based on the confounders. Confounders were gradually put into the models to control for bias and to examine the stability of the correlations. Bootstrap sampling was employed to examine the mediating role of subjective age.

Result

According to the fully adjusted model, neuroticism (β = 0.17, 95% CI: 0.02 to 0.31, p for trend = 0.02), extraversion (β = -0.07, 95% CI: -0.15 to 0.001, p for trend = 0.05), and subjective age (β = 2.02, 95% CI: 1.28 to 2.78, p for trend <0.001) were consistently correlated with CaF. Mediating analysis revealed that extraversion was negatively related with CaF both directly and indirectly, via subjective age [23.2% partial effect, bootstrap 95%CI: -0.024(-0.080, -0.000)]. Higher neuroticism was consistently related to older subjective age (β = 0.002, 95% CI: 0.001 to 0.004, p for trend = 0.006), while higher levels of conscientiousness, openness, and extraversion were consistently correlated with younger subjective age(β = -0.002, p for trend = 0.04; β = -0.003, p for trend = 0.003; β = -0.002, p for trend = 0.0, respectively).

Conclusion

Extraversion and neuroticism were significantly correlated with CaF. Moreover, subjective age partially mediated the relationship between extraversion and CaF. Furthermore, subjective age was found to be associated with both CaF and personality traits. These findings highlighted the important roles of personality traits and subjective age in assessments of CaF and in the development of strategies for preventing falls among older patients.

Topic evolution before fall incidents in new fallers through natural language processing of general practitioners' clinical notes

BACKGROUND

Falls involve dynamic risk factors that change over time, but most studies on fall-risk factors are cross-sectional and do not capture this temporal aspect. The longitudinal clinical notes within electronic health records (EHR) provide an opportunity to analyse fall risk factor trajectories through Natural Language Processing techniques, specifically dynamic topic modelling (DTM). This study aims to uncover fall-related topics for new fallers and track their evolving trends leading up to falls.

METHODS

This case-cohort study utilised primary care EHR data covering information on older adults between 2016 and 2019. Cases were individuals who fell in 2019 but had no falls in the preceding three years (2016-18). The control group was randomly sampled individuals, with similar size to the cases group, who did not endure falls during the whole study follow-up period. We applied DTM on the clinical notes collected between 2016 and 2018. We compared the trend lines of the case and control groups using the slopes, which indicate direction and steepness of the change over time.

RESULTS

A total of 2,384 fallers (cases) and an equal number of controls were included. We identified 25 topics that showed significant differences in trends between the case and control groups. Topics such as medications, renal care, family caregivers, hospital admission/discharge and referral/streamlining diagnostic pathways exhibited a consistent increase in steepness over time within the cases group before the occurrence of falls.

CONCLUSIONS

Early recognition of health conditions demanding care is crucial for applying proactive and comprehensive multifactorial assessments that address underlying causes, ultimately reducing falls and fall-related injuries.

The genetics of falling susceptibility and identification of causal risk factors

Falls represent a huge health and economic burden. Whilst many factors are associated with fall risk (e.g. obesity and physical inactivity) there is limited evidence for the causal role of these risk factors. Here, we used hospital and general practitioner records in UK Biobank, deriving a balance specific fall phenotype in 20,789 cases and 180,658 controls, performed a Genome Wide Association Study (GWAS) and used Mendelian Randomisation (MR) to test causal pathways. GWAS indicated a small but significant SNP-based heritability (4.4%), identifying one variant (rs429358) in APOE at genome-wide significance (P < 5e-8). MR provided evidence for a causal role of higher BMI on higher fall risk even in the absence of adverse metabolic consequences. Depression and neuroticism predicted higher risk of falling, whilst higher hand grip strength and physical activity were protective. Our findings suggest promoting lower BMI, higher physical activity as well as psychological health is likely to reduce falls.

The relationship between fall and loneliness among older people in China: the mediating role of personality trait

Aims

We aimed to explore the role of personality traits between fall and loneliness.

Methods

A questionnaire survey was used to investigate falls, the big five personality traits, and loneliness among older people (≥ 60 years old) in China mainland.

Results

A total of 4,289 older people participated in the survey. There are significant differences in age, marital status, education level, residence, solitariness, and fall in relation to loneliness among older people. Falls, especially when they occurred one time increase the loneliness of older people. Agreeableness, conscientiousness, and neuroticism were significant mediating effects between falls and loneliness.

Conclusion

This study implied that agreeableness, conscientiousness, and neuroticism were meditating factors between falls and loneliness. In the future, we should consider the big five personality traits more to understand loneliness and offer older people interventions for reducing their loneliness. The study design was cross-sectional, so the temporal precedence of mediators and causality could not be tested. Because the data were collected retrospectively, current loneliness is likely to have confounding effects on retrospective recall.

The association of fear of falling and physical and mental Health-Related Quality of Life (HRQoL) among community-dwelling older persons; a cross-sectional study of Urban Health Centres Europe (UHCE)

BACKGROUND

The share of people over 80 years in the European Union is estimated to increase two-and-a-half-fold from 2000 to 2100. A substantial share of older persons experiences fear of falling. This fear is partly associated with a fall in the recent past. Because of the associations between fear of falling, avoiding physical activity, and the potential impact of those on health, an association between fear of falling and low health-related quality of life, is suggested. This study examined the association of fear of falling with physical and mental Health-Related Quality of Life (HRQoL) among community-dwelling older persons in five European countries.

METHODS

A cross-sectional study was conducted using baseline data of community-dwelling persons of 70 years and older participating in the Urban Health Centers Europe project in five European countries: United Kingdom, Greece, Croatia, the Netherlands and Spain. This study assessed fear of falling with the Short Falls Efficacy Scale-International and HRQoL with the 12-Item Short-Form Health Survey. The association between low, moderate or high fear of falling and HRQoL was examined using adjusted multivariable linear regression models.

RESULTS

Data of 2189 persons were analyzed (mean age 79.6 years; 60.6% females). Among the participants, 1096 (50.1%) experienced low fear of falling; 648 (29.6%) moderate fear of falling and 445 (20.3%) high fear of falling. Compared to those who reported low fear of falling in multivariate analysis, participants who reported moderate or high fear of falling experienced lower physical HRQoL (β = -6.10, P < 0.001 and β = -13.15, P < 0.001, respectively). In addition, participants who reported moderate or high fear of falling also experienced lower mental HRQoL than those who reported low fear of falling (β = -2.31, P < 0.001 and β = -8.80, P < 0.001, respectively).

CONCLUSIONS

This study observed a negative association between fear of falling and physical and mental HRQoL in a population of older European persons. These findings emphasize the relevance for health professionals to assess and address fear of falling. In addition, attention should be given to programs that promote physical activity, reduce fear of falling, and maintain or increase physical strength among older adults; this may contribute to physical and mental HRQoL.

Association between mild cognitive impairment and falls among Chinese older adults: the mediating roles of balance capacity and depressive symptoms

BACKGROUND

This study aimed to examine the association between mild cognitive impairment (MCI) and the follow-up risk of falls among Chinese older adults, exploring the mediating roles of balance capacity and depressive symptoms in the association between MCI and falls.

METHODS

A total of 5482 adults aged 60 years and above from waves 2015 and 2018 of the China Health and Retirement Longitudinal Study were included for analysis. Cognition was assessed by a global cognition score, which included three tests: episodic memory, figure drawing and Telephone Interview of Cognitive Status. Depressive symptoms were assessed with the Centre for Epidemiological Studies Depression Scale. Logistic regression models were used to estimate the association between MCI and falls. Mediation analysis was employed to explore the potential mediating roles of balance capacity and depressive symptoms in the association between MCI and falls.

RESULTS

MCI was significantly associated with the risk of falls (OR 1.259, 95% CI 1.080 to 1.467). Balance capacity and depressive symptoms played parallel mediating roles in the association between MCI and falls, and the mediating effects were 0.004 (95% CI 0.003 to 0.024) and 0.010 (95% CI 0.004 to 0.016), respectively.

CONCLUSIONS

It is necessary to screen for and recognise MCI in order to prevent falls among older adults. More efforts should be made to improve balance capacity and relieve depressive symptoms to reduce the risk of falls among older adults with MCI.

Determinants of the Attitude to COVID-19 Vaccine in Lima-Peru: Path Analysis and Structural Regression

Introduction

Research on the effects of COVID-19 has shown that a favorable attitude toward the COVID-19 vaccine would help reduce the pandemic's sequelae and avoid lethal variants.

Objective

A theoretical model was tested through the strategy of path analysis and structural equation modeling, seeking to evaluate the direct effect of neuroticism and the indirect effects of risk-avoidance and rule-following behaviors, mediated by attitudes toward science.

Methods

A total of 459 adults, mostly women (61%), mean age 28.51 (SD = 10.36), living in Lima (Peru), participated. The scales of neuroticism, risk avoidance behavior (RAB), norm following (NF), attitudes toward science, and attitudes toward vaccination were administered.

Results

The path analysis explained 36% of the variance in vaccine attitude, whereas the latent structural regression model achieved a 54% explanation; according to this model attitude toward science (β=.70, p < .01) and neuroticism (β=-.16, p < .01) are significant predictors of vaccine attitude. Likewise, risk avoidance behavior and rule-following have indirect effects on attitudes toward vaccination.

Conclusion

Low neuroticism and a positive attitude toward the science that mediates the effects of RAB and NF directly condition the possibility of vaccination against COVID-19 in the adult population.

Higher levels of neuroticism in older adults predict lower executive functioning across time: the mediating role of perceived stress

Neuroticism has been associated with individual differences across multiple cognitive functions. Yet, the literature on its specific association with executive functions (EF) in older adults is scarce, especially using longitudinal designs. To disentangle the specific influence of neuroticism on EF and on coarse cognitive functioning in old adulthood, respectively, we examined the relationship between neuroticism, the Trail Making Test (TMT) and the Mini-Mental State Examination (MMSE) in a 6-year longitudinal study using Bayesian analyses. Data of 768 older adults (M age = 73.51 years at Wave 1) were included in a cross-lagged analysis. Results showed no cross-sectional link between neuroticism and TMT performance at Wave 1 and no longitudinal link between neuroticism at Wave 1 and MMSE at Wave 2. However, neuroticism at Wave 1 predicted TMT performance at Wave 2, indicating that the more neurotic participants were, the lower they performed on the TMT six years later. Additional analyses showed that this relation was fully mediated by participants' perceived stress. Our results suggest that the more neurotic older adults are the more stress they may perceive six years later, which in turn negatively relates to their EF. In sum, this study demonstrates that neuroticism may lead to lower EF in older age across six years. It further suggests older adults' perceived stress as mediator, thereby providing novel insights into the mechanisms underlying this relation. Possible intervention approaches to counter these effects are discussed.