Transitions among disability levels or death in African American and white older women

Defining and Measuring Preclinical Mobility Limitation: An Expert Consensus Exercise Informed by a Scoping Review

BACKGROUND

Early change in function in older adults has been termed preclinical disability (PCD). PCD has been understudied compared to other stages of disability because it is unlikely to receive comparative priority in clinical settings. It has major implications for prevention and population health as it may be the optimal time to intervene to prevent further decline. A standardized approach to research in PCD, including a common definition and measurement approaches, is needed to advance this work.

METHODS

The process to establish how PCD should be defined and measured was undertaken in 2 stages: (1) a scoping review of the literature, which was used to inform (2) a web-enabled consensus meeting with content experts.

RESULTS

The scoping review and the consensus meeting support the use of the term preclinical mobility limitation (PCML) and that it should be measured using both patient-reported and performance-based measures. It was agreed that the definition of PCML should include modification of frequency and/or method of task completion, without overt disability, and that requisite mobility tasks include walking (distance and speed), stairs, and transfers.

CONCLUSIONS

Currently, there are few standardized assessments that can identify PCML. PCML is the term that most clearly describes the stage where people experience a change in routine mobility tasks, without a perception of disability. Further evaluation into the reliability, validity, and responsiveness of outcome measures is needed to advance research on PCML.

What are the illnesses associated with frailty in community-dwelling older adults: the Korean Frailty and Aging Cohort Study

BACKGROUND/AIMS

Frailty is mainly due to an age-related decrease in the physiological reserves needed to maintain biological homeostasis, but it can also occur as a result of chronic diseases. The purpose of this study was to identify illnesses associated with frailty in Korean community-dwelling older adults.

METHODS

This was a cross-sectional study that included 2,936 older adults aged between 70 and 84 years who had completed both interviews and physical function assessments for the Korean Frailty and Aging Cohort Study. Current illnesses diagnosed by physicians were included in the analysis. The definition of frailty was derived from the Fried frailty phenotype.

RESULTS

The prevalence of hypertension, diabetes mellitus (DM), arthritis, osteoporosis, urinary incontinence, and lung disease (including asthma, chronic obstructive pulmonary disease, and chronic bronchitis) was higher in the frail group (p < 0.05). After adjusting for age, sex, physical activity, alcohol, smoking, education, and presence of a spouse, the odds ratios for DM and urinary incontinence in frailty were 1.51 (95% confidence interval [CI], 1.10 to 2.01; p = 0.01) and 1.88 (95% CI, 1.11 to 3.18; p = 0.02).

CONCLUSION

In Korean community-dwelling older adults, DM and urinary incontinence were associated with frailty after adjusting for various factors. In the future, the list of comorbid diseases that are appropriate for Korean population-specific frailty assessment should be inventoried.

Racial and Ethnic Differences in Disability Transitions Among Older Adults in the United States

BACKGROUND

Racial and ethnic differences in disability persist and are possibly widening in recent years, but evidence is limited for racial and ethnic differences in disability progression through the entire disablement process and potential influential factors. The objective of this study is to examine racial and ethnic differences in patterns of late-life disability transitions, using a new disability spectrum that incorporates successful accommodation with assistive devices in response to capacity limitations to prolong independence.

METHODS

The study cohort consisted of a nationally representative sample of Medicare beneficiaries aged 65 and older in the United States who were enrolled in the 2011 National Health and Aging Trends Study and followed up annually until 2015 (n = 6,198). First-order Markov transition models were used to determine racial/ethnic differences in transitions among three stages of self-care and mobility limitations (fully able, successful accommodation, difficulty/assistance) and death.

RESULTS

After adjustment for age and sex, non-Hispanic Black and Hispanic respondents had higher probabilities of unfavorable transitions and lower probabilities of remaining in the successful accommodation stage than non-Hispanic White respondents. The racial and ethnic differences in probabilities of maintaining successful accommodation remained statistically significant after adjustment for socioeconomic and health factors (Black: 0.56, 95% CI = 0.52-0.60; Hispanic: 0.53, 95% CI = 0.44-0.61; White: 0.63, 95% CI = 0.61-0.65).

CONCLUSIONS

Successful accommodation with assistive devices may provide possibilities for implementing interventions to enhance older adults' capacities and reducing racial/ethnic differences in late-life disability.

Relationship Between Chronic Conditions and Disability in African American Men and Women

BACKGROUND

Race differences in chronic conditions and disability are well established; however, little is known about the association between specific chronic conditions and disability in African Americans. This is important because African Americans have higher rates and earlier onset of both chronic conditions and disability than white Americans.

METHODS

We examined the relationship between chronic conditions and disability in 602 African Americans aged 50 years and older in the Baltimore Study of Black Aging. Disability was measured using self-report of difficulty in activities of daily living (ADL). Medical conditions included diagnosed self-reports of asthma, depressive symptoms, arthritis, cancer, diabetes, cardiovascular disease (CVD), stroke, and hypertension.

RESULTS

After adjusting for age, high school graduation, income, and marital status, African Americans who reported arthritis (women: odds ratio (OR)=4.87; 95% confidence interval(CI): 2.92-8.12; men: OR=2.93; 95% CI: 1.36-6.30) had higher odds of disability compared to those who did not report having arthritis. Women who reported major depressive symptoms (OR=2.59; 95% CI: 1.43-4.69) or diabetes (OR=1.83; 95% CI: 1.14-2.95) had higher odds of disability than women who did not report having these conditions. Men who reported having CVD (OR=2.77; 95% CI: 1.03-7.41) had higher odds of disability than men who did not report having CVD.

CONCLUSIONS

These findings demonstrate the importance of chronic conditions in understanding disability in African Americans and how it varies by gender. Also, these findings underscore the importance of developing health promoting strategies focused on chronic disease prevention and management to delay or postpone disability in African Americans.

PUBLICATION INDICES

Pubmed, Pubmed Central, Web of Science database.

Understanding Socioenvironmental Contributors to Racial and Ethnic Disparities in Disability Among Older Americans

Our understanding of the mechanisms through which racial/ethnic disparities in disability in older adults develop and are maintained is limited. We examined the role of physical impairment, socioeconomic factors and health for racial/ethnic disparities in activities of daily living (ADL), and the modifying role of the indoor home environment. Data come from the National Health and Aging Trends Study ( N = 5,640), and negative binomial regression models were specified separately for men and women. Blacks and Hispanics reported more ADL difficulty than Whites. Living in homes with clutter was associated with higher rates of ADL difficulty, but it was not related to racial/ethnic disparities. Racial/ethnic differences were explained by physical impairment for men, but not for women. Socioeconomic factors and health accounted for remaining disparities for Black, but not for Hispanic women. Attention to individual and environmental factors is necessary to fully understand and address race/ethnic disparities in disability in older Americans.

The Frequency of Frailty in Ambulatory Patients With Chronic Lung Diseases

OBJECTIVES

To determine the prevalence of frailty in patients with chronic lung diseases.

METHODS

We studied 120 patients with chronic lung disease using Fried's criteria (gait speed, weight loss, exhaustion, grip strength, and physical activity).

RESULTS

The study population (56% women) had a mean age of 64 ± 13 years, mean body mass index of 31± 9 kg/m(2), and a mean FEV(1) (forced expiratory volume in 1 second) of 60% ± 25% of predicted. The average gait speed was 52.1 ± 14.3 m/min; 18% were frail, 64% prefrail, and 18% robust. Gait speed correlated with frailty status and decreased as frailty worsened (57 m/min in robust subjects and 41 m/min in frail subjects). Slow gait speeds (<60 m/min) had a 95% sensitivity and 34% specificity to predict frailty.

CONCLUSIONS

Patients with chronic lung disease frequently meet Fried's criteria for frailty. Gait speed can be used to screen these patients to determine if a more detailed evaluation is needed.

Pain characteristics associated with the onset of disability in older adults: the maintenance of balance, independent living, intellect, and zest in the Elderly Boston Study

OBJECTIVES

To determine the effects of chronic pain on the development of disability and decline in physical performance over time in older adults.

DESIGN

Longitudinal cohort study with 18 months of follow-up.

SETTING

Urban and suburban communities.

PARTICIPANTS

Community-dwelling older adults aged 65 and older (N = 634).

MEASUREMENTS

Chronic pain assessment consisted of musculoskeletal pain locations and pain severity and pain interference according to the subscales of the Brief Pain Inventory. Disability was self-reported as any difficulty in mobility and basic and instrumental activities of daily living (ADLs, IADLs). Mobility performance was measured using the Short Physical Performance Battery (SPPB). Relationships between baseline pain and incident disability in 18 months were determined using risk ratios (RRs) from multivariable Poisson regression models.

RESULTS

Almost 65% of participants reported chronic musculoskeletal pain at baseline. New onset of mobility difficulty at 18 months was strongly associated with baseline pain distribution: 7% (no sites), 18% (1 site), 24% (multisite), and 39% (widespread pain, P-value for trend < .001). Similar graded effects were found for other disability measures. Elderly adults with multisite or widespread pain had at a risk of onset of mobility difficulty at least three times as great as that of their peers without pain after adjusting for disability risk factors (multisite pain: risk ratio (RR) = 2.95, 95% confidence interval (CI) 1.58-5.50; widespread pain: RR = 3.57, 95% CI = 1.71-7.48). Widespread pain contributed to decline in mobility performance (1-point decline in SPPB, RR = 1.47, 95% CI = 1.08-2.01). Similar associations were found for baseline pain interference predicting subsequent mobility decline and ADL and IADL disability. Weaker and less-consistent associations were observed with pain severity.

CONCLUSION

Older community-dwelling adults living with chronic pain in multiple musculoskeletal locations have a substantially greater risk for developing disability over time and for clinically meaningful decline in mobility performance than those without pain.

Change in fast walking speed preceding death: results from a prospective longitudinal cohort study

BACKGROUND

Walking speed (WS) predicts mortality. However, it is unclear if decline in WS increases prior to death. We examined whether (a) WS declined faster in persons who died during the follow-up compared with those who remained alive and (b) adding change in WS to a model including age, sex, and baseline WS improved prediction of mortality.

METHODS

Data are from 4,016 participants of the Dijon center of the Three-City study (France), aged 65-85 years. Fast WS (FWS) was measured up to five times over a 12-year period. Mortality was ascertained until 2012.

RESULTS

Linear mixed models using a backward time scale showed that FWS declined faster in 908 participants who died during the follow-up (annual change = -0.031 m/s) than in those who survived (-0.021 m/s), corresponding to a difference of -0.009 (95% confidence interval = -0.013 to -0.005) m/s. Compared with "normal" change in FWS (annual change ≥-0.04 m/s), "substantial" decline (<-0.08 m/s) was associated with a 1.4-fold greater risk of mortality (hazards ratio = 1.40, confidence interval = 1.02-1.92) and small decline (-0.08 to -0.04 m/s) with a 1.2-fold greater risk (hazards ratio = 1.18, confidence interval = 0.89-1.57). The net reclassification index when adding these categories of change in FWS to the model adjusted for age, sex, and baseline FWS was 19.0% (0.6, 36.8%).

CONCLUSION

Participants who died during the follow-up had a steeper decline in FWS than the others. Both baseline FWS and FWS decline predict mortality.

Disability and health: exploring the disablement experience of young adult African Americans

PURPOSE

The objective of this study was to examine disablement as experienced by young adult African American men and women with permanent mobility impairment.

METHOD

This study included a sample of 5 male and 5 female participants ranging in age from 22 to 39. An exploratory descriptive design and qualitative methods, including interviews and fieldnotes, were used. Interview data was analyzed using the process of inductive qualitative content analysis.

RESULTS

Basic desires for independence, shared intimacy, and psychological and physical health were not diminished by physical limitations. The disablement experience of this group is reflected in the themes of "Cumulative Losses" and "Sustained Desires". The findings of this study describe the high level of motivation that young adult African American men and women with disabilities have to improve levels of health and well-being within the context of their impairments.

CONCLUSION

This study provides a better understanding of the contextual factors and experiences that may contribute to the development of further disability and subsequent health-related problems over time. Increased knowledge of the disablement experience of these young men and women may assist health care entities and social service providers in improving health care and rehabilitation efforts targeting this group. Implications for Rehabilitation Disablement among African American Young Adults This study's findings describe the high level of motivation that young adult African American men and women with disabilities have to improve levels of health and well-being. The two primary themes, "Cumulative Losses" and "Sustained Desires", suggest that despite a number of significant losses, several innate desires remained intact in the context of impairment. Understanding the disablement experience of young African Americans may assist health care entities and social service providers in improving health care targeting this group.

Patterns of 12-year change in physical activity levels in community-dwelling older women: can modest levels of physical activity help older women live longer?

Few studies have addressed changes in physical activity participation over time among the elderly. The authors hypothesized that there were distinct trajectories of physical activity level over time and identifiable predictors of such trajectories, as well as that the maintenance of regular physical activity, even below recommended levels, was associated with lower mortality risk. Using longitudinal data (1994-2009) from 433 initially high-functioning older women aged 70-79 years at baseline, a joint latent class and survival mixture model identified 4 activity trajectory classes: always active (16.6%), fast declining (19.2%), stable moderate (32.3%), and always sedentary (31.9%). Obesity, coronary artery disease, chronic obstructive pulmonary disease, depressive symptoms, low self-efficacy, mobility disability, and low energy were associated with sedentary behavior and/or a fast decline in activity. Women in the fast declining and always sedentary classes had hazard ratios for death of 2.34 (95% confidence interval: 1.20, 4.59) and 3.34 (95% confidence interval: 1.72, 6.47), respectively, compared with the always active class; no mortality difference was found between the stable moderate and always active groups (hazard ratio = 1.24, 95% confidence interval: 0.63, 2.47). Our findings suggest that physical activity does not have to be vigorous to be beneficial and that the gain may be the greatest among women who reported the lowest levels of activity.

Racial differences in gait velocity in an urban elderly cohort

OBJECTIVES

To investigate whether there are racial differences in gait velocity in elderly adults.

DESIGN

Cross-sectional analysis.

SETTING

Bronx, New York.

PARTICIPANTS

Two hundred thirteen participants of the Einstein Aging Study (157 Caucasian, 56 African American), a longitudinal study of community-residing elderly adults recruited using Medicare and voter registration records.

MEASUREMENTS

Demographic characteristics, medical history, Geriatric Depression Scale, Blessed Information-Memory-Concentration Test, Total Pain Index, gait velocity.

RESULTS

Caucasians were older (median 79.9 vs 75.5, P = .002) and more educated (median 14 vs 12 years, P = .007) and had lower body mass index (mean 26.9 ± 4.3 vs 28.9 ± 6.4, P = .03). African Americans were more likely to be female (80.4% vs 59.9%, P = .006) and to have diabetes mellitus (28.6% vs 13.4%, P = .01). Pain levels were not significantly different between Caucasians and African Americans. African Americans had a significantly slower gait velocity (mean 90.2 ± 17.9 vs 99.1 ± 20.1 cm/s, P = .004). This difference persisted after adjusting for multiple covariates. Differences in common factors known to influence gait did not explain a 7.79-cm/s slower gait speed in African Americans than Caucasians.

CONCLUSION

Differences in gait velocity persist between African Americans and Caucasians despite adjusting for many confounders. Increases of just 10 cm/s are associated with lower mortality. Further studies are needed to evaluate whether there are modifiable risk factors that may explain this difference and whether an intervention could reduce the discrepancy between the groups.

Hierarchy of higher-level physical functions: a longitudinal investigation on a nationally representative population of community-dwelling middle-aged and elderly persons

PURPOSE

Understanding the hierarchy of higher-level physical functions to infer disability level (mild, moderate or severe) is essential for the precise targeting of preventive interventions and has been examined previously in a cross-sectional study. Based on longitudinal data, this study evaluated the hierarchy of higher-level physical functions.

METHODS

Data from a cohort of 2729 community-dwelling persons aged over 50 with no initial disability were drawn from the "Survey of Health and Living Status of the Elderly in Taiwan" from 1996 through 2007. The three-level hierarchy of eight chosen activities was examined by the median ages to disability onset with survival analyses and by Cox regressions, which examined the effects of sex and age on the development of this hierarchy.

RESULTS

The progression of incident disability was as follows: mild level-running, carrying weight, and squatting; moderate level-climbing stairs, walking, and standing; and severe level-grasping and raising arms up. Women and older persons were at greater risk of developing more severe levels of disability. Another Cox regression with one index activity from each hierarchical level revealed similar results.

CONCLUSIONS

The three-level hierarchy of higher-level physical functions has been validated longitudinally, suggesting rich research and clinical implications.

Community aging in place, advancing better living for elders: a bio-behavioral-environmental intervention to improve function and health-related quality of life in disabled older adults

OBJECTIVES

To determine effect size and acceptability of a multicomponent behavior and home repair intervention for low-income disabled older adults.

DESIGN

Prospective randomized controlled pilot trial.

SETTING

Participants' homes.

PARTICIPANTS

Forty low-income older adults with difficulties in one or more activities of daily living (ADLs) or two or more instrumental activities of daily living (IADLs).

INTERVENTION

The Community Aging in Place, Advancing Better Living for Elders (CAPABLE), coordinated occupational therapy, nursing, and handyman visits, was compared with attention-control visits. The intervention consisted of up to six visits with an occupational therapist, up to four visits with a nurse, and an average of $1,300 in handyman repairs and modifications. Each intervention participant received all components of the intervention clinically individualized to risk profile and goals. Each attention-control participant received the same number of visits as the intervention participants, involving sedentary activities of their choice.

MEASUREMENT

PRIMARY OUTCOME

difficulty in performing ADLs and IADLs.

SECONDARY OUTCOMES

health-related quality of life and falls efficacy.

RESULTS

Thirty-five of 40 adults (87%) completed the 6-month trial, and 93% and 100% of the control and intervention group, respectively, stated that the study benefited them. The intervention group improved on all outcomes. When comparing mean change in the intervention group with mean change in the control group from baseline to follow-up, the CAPABLE intervention had effect sizes of 0.63 for reducing difficulty in ADLs, 0.62 for reducing difficulty in IADLs, 0.89 for quality of life, and 0.55 for falls efficacy.

CONCLUSION

The CAPABLE intervention was acceptable to participants and feasible to provide and showed promising results, suggesting that this multicomponent intervention to reduce disability should be evaluated in a larger trial.

Race and preference-based health-related quality of life measures in the United States

BACKGROUND

Health-related quality of life instruments (HRQoL) are widely used to produce measures that summarize population health and to inform decision-making and health policy. Although the literature about the relationship between health and race in the United States is quite extensive, there is a lack of studies that comprehensively examine the relationship between race and preference-based HRQoL. Given the widespread use of these measures, it becomes important to understand the extent of the race differences in HRQoL scores and factors associated with any such differences.

METHODS

We examined the differences in HRQoL, between blacks and whites and associated factors, using the summary scores of the SF-6D, EQ-5D, QWB-SA, HUI2, HUI3, administered by telephone to a nationally representative sample of 3,578 black and white US adults between the ages of 35 and 89 in the National Health Measurement Study (NHMS).

RESULTS

Black women had substantially lower HRQoL than white women. The difference was largely explained by sociodemographic and socioeconomic variables. Black men did not differ significantly from white men, except for the EQ-5D. HRQoL among black men was higher at higher income levels, while the HRQoL of black women was especially low compared to other groups at high income levels.

Sojourner syndrome and health disparities in African American women

Despite improvements in many aspects of health, African American women experience early onset of disease and disability and increased mortality because of health disparities. African American women experience stress and health disadvantages because of the interaction and multiplicative effects of race, gender, class, and age. Sojourner Syndrome is an illustrative and symbolic representation that describes the multiple roles and social identities of African American women on the basis of historical referents and adaptive behaviors that fostered survival and resilience under oppressive circumstances. Adaptive behaviors also precipitated health risks due to chronic active coping. Weathering describes the cumulative health impact of persistent stress and chronic active coping that contributes to early health deterioration and increased morbidity, disability, and mortality in African American women. An emancipatory knowing nursing perspective provides a viewpoint from which to examine social injustices that create conditions for the excessive health burdens experienced by African American women and to frame nursing actions that create opportunities to promote health and eliminate health disparities.