Characteristics Associated With Disparities Among Older Adults in Coronavirus Disease 2019 Outcomes in an Academic Health Care System.

BACKGROUND: An improved understanding of the coronavirus disease 2019 (COVID-19) pandemic is needed to identify predictors of outcomes among older adults with COVID-19. OBJECTIVE: The objective of this study was to examine patient and health system factors predictive of in-hospital mortality, intensive care unit (ICU) admission, and readmission among patients with COVID-19. DESIGN, SETTING, AND PARTICIPANTS: A cohort study of patients aged 18 years and older with COVID-19 discharged from 5 New York hospitals within the Mount Sinai Health System (March 1, 2020-June 30, 2020). MEASURES: Patient-level characteristics (age, sex, race/ethnicity, comorbidities/serious illness, transfer from skilled nursing facility, severe acute respiratory syndrome coronavirus 2 viral load, Sequential Organ Failure Assessment score, treatments); hospital characteristics. OUTCOMES: All-cause in-hospital mortality; ICU admission; 30-day readmission. RESULTS: Among 7556 subjects, mean age 61.1 (62.0) years; 1556 (20.6%) died, 949 (12.6%) had an ICU admission, and 227 (9.1%) had a 30-day readmission. Increased age [aged 55-64: odds ratio (OR), 3.28; 95% confidence interval (CI), 2.41-4.46; aged 65-74: OR, 4.67; 95% CI, 3.43-6.35; aged 75-84: OR, 10.73; 95% CI, 7.77-14.81; aged 85 y and older: OR, 20.57; 95% CI, 14.46-29.25] and comorbidities (OR, 1.11; 95% CI, 1.16, 2.13) were independent risk factors for in-hospital mortality. Yet older adults (aged 55-64 y: OR, 0.56; 95% CI, 0.40-0.77; aged 65-74: OR, 0.46; 95% CI, 0.33-0.65; aged 75-84: OR, 0.27; 95% CI, 0.18-0.40; aged above 85 y: OR, 0.21; 95% CI, 0.13-0.34) and those with Medicaid (OR, 0.74; 95% CI, 0.56-0.99) were less likely to be admitted to the ICU. Race/ethnicity, crowding, population density, and health system census were not associated with study outcomes. CONCLUSIONS: Increased age was the single greatest independent risk factor for mortality. Comorbidities and serious illness were independently associated with mortality. Understanding these risk factors can guide medical decision-making for older adults with COVID-19. Older adults and those admitted from a skilled nursing facility were half as likely to be admitted to the ICU. This finding requires further investigation to understand how age and treatment preferences factored into resource allocation.

Bereavement Among Adult Siblings: An Examination of Health Services Utilization and Mental Health Outcomes.

We aimed to examine the association of young and middle-aged sibling bereavement with use of health services and risk of developing mental health disorders over 24 months before and after sibling's death. All persons aged 18-56 years who died of illness/natural causes between 2009 and 2016 were identified in the Danish Register of Causes of Death. The study sample included 31,842 bereaved siblings and 31,842 age- and sex-matched controls. Overall, the largest effect was observed for increased use of psychological services: For women, the peak was observed 4-6 months after the death (odds ratio (OR) = 3.31, 95% confidence interval (CI): 2.85, 3.85) and for men in the first 3 months after the death (OR = 2.63, 95% CI: 2.06, 3.36). The peak of being diagnosed in a hospital setting with any mental disorder for women was observed in the period 13-15 months after sibling death (OR = 1.52, 95% CI: 1.11, 2.07) and for men in the first 3 months after the death (OR = 1.75, 95% CI: 1.32, 2.32). Young and middle-aged adults who experienced the death of a sibling are more likely to use health services and are at risk of poorer mental health outcomes. During the bereavement process, young and middle-aged siblings are especially in need of mental health support, such as professional psychological counseling.

Size and composition of family networks of decedents: A nationwide register-based study.

BACKGROUND: Seriously ill individuals rely heavily on family caregivers at the end of life. Yet many do not have family support. AIM: To characterize the size and composition of decedents' family networks by cause of death, demographic, clinical, socioeconomic, and geographic characteristics. DESIGN: A cross-sectional population-level study with data collected from nation-wide registers. SETTING/PARTICIPANTS: All adults in Denmark born between 1935 and 1998 who died of natural causes between 2009 and 2016 were linked at the time of death to living adult spouses/partners, children, siblings, parents, and grandchildren. RESULTS: Among 175,755 decedents (median age: 68 years, range: 18-81 years), 61% had a partner at the time of death and 78% had at least one adult child. Ten percent of decedents had no identified living adult family members. Decedents with family had a median of five relatives. Males were more likely to have a spouse/partner (65%) than females (56%). While 93% of decedents dying of cancer had adult family, only 70% of individuals dying of dementia had adult family at the time of death. The majority of cancer decedents co-resided or lived within 30 km of family (88%), compared to only 65% of those dying from psychiatric illness. CONCLUSIONS: While the majority of adults had an extensive family network at the time of death, a substantial proportion of decedents had no family, suggesting the need for non-family based long-term service and support systems. Assessment of family networks can expand our understanding of the end-of-life caregiving process and inform palliative care delivery.

New antidepressant utilization pre- and post-bereavement: a population-based study of partners and adult children.

PURPOSE: Bereavement is associated with increased morbidity and mortality, but few studies have examined the specific timing of depression onset. This study examines the risk of developing new-onset depression in adult children and partners by month, 1 year before and after death. METHODS: Using population-based registers in Denmark, we assembled a cohort of 236,000 individuals who died a natural death (2010-2016). Partners and adult children of the deceased were identified and demographic and prescription data were collected. GEE logistic regression was used to model whether the bereaved received a new antidepressant prescription around the death of their loved one across 24 time intervals (12 months before and after death). RESULTS: Male and female partners had an increase in receipt of new antidepressant prescriptions in the 11 months after the death of their partner, with a peak increase 2 or 3 months after death. Partners also increased new antidepressant prescription use 2 months before death. Characteristics of the decedents including cause of death were not associated with new antidepressant prescription in the surviving partner. Adult children did not have increased odds of being prescribed new antidepressants at any time. CONCLUSION: Both male and female partners have increase in new antidepressant utilization before and after the death of their partner. Our work points to the importance of supporting partners not only after the death of their partner, but also in the period before death when families may be actively engaged in caregiving for the seriously ill.

Limited engagement in, yet clear preferences for advance care planning in young-onset dementia: An exploratory interview-study with family caregivers.

BACKGROUND: The significance of advance care planning in dementia is widely acknowledged. Despite the suggestion that younger people with dementia and their family might have distinct needs and preferences in this area, studies on advance care planning in young-onset dementia are absent. AIM: We aim to explore (1) whether family caregivers had already engaged in advance care planning with patients and/ or professionals and the accompanying reasons and (2) family caregivers' preferences for how to ideally engage in the process with patients, family and professionals. DESIGN: A qualitative study was conducted: we analysed semi-structured interviews (n = 15) through the method of constant comparative analysis. SETTING/PARTICIPANTS: We included Flemish family caregivers of persons with young-onset dementia. RESULTS: Plans for the future typically concerned non-medical affairs. Participants' limited engagement in advance care planning was clarified through several reasons: not considering it useful, hindering patient behaviour, adopting a day-to-day attitude, caregivers emotionally protecting themselves and uncertainty about patients' cognitive competence. However, endorsement for advance care planning showed from respondents' preferences that it should be initiated timely, by a third party, and emphasize patients' remaining capacities. Finally, the need for information and high-quality care emerged. CONCLUSION: A gap of knowledge, of information and in care intertwiningly hinder advance care planning. In young-onset dementia, engaging in advance care planning is not an option equally accessible as not doing so. Policy makers, institutions and professionals could reflect on their responsibility in providing these patients and caregivers an actual choice to engage in advance care planning or not.

Factors associated with older people's emergency department attendance towards the end of life: a systematic review.

Background: Emergency department (ED) attendance for older people towards the end of life is common and increasing, despite most preferring home-based care. We aimed to review the factors associated with older people's ED attendance towards the end of life. Methods: Systematic review using Medline, Embase, PsychINFO, CINAHL and Web of Science from inception to March 2017. Included studies quantitatively examined factors associated with ED attendance for people aged ≥65 years within the last year of life. We assessed study quality using the QualSyst tool and determined evidence strength based on quality, quantity and consistency. We narratively synthesized the quantitative findings. Results: Of 3824 publications identified, 21 were included, combining data from 1 565 187 participants. 17/21 studies were from the USA and 19/21 used routinely collected data. We identified 47 factors and 21 were included in the final model. We found high strength evidence for associations between ED attendance and palliative/hospice care (adjusted effect estimate range: 0.1-0.94); non-white ethnicity (1.03-2.16); male gender (1.04-1.83, except 0.70 in one sub-sample) and rural areas (0.98-1.79). The final model included socio-demographic, illness and service factors, with largest effect sizes for service factors. Conclusions: In this synthesis, receiving palliative care was associated with lower ED attendance in the last year of life for older adults. This has implications for service models for older people nearing the end of life. However, there is limited evidence from European countries and none from low or middle-income countries, which warrants further research.

Medicare Expenditures and Health Care Utilization in a Multiethnic Community-based Population With Dementia From Incidence to Death.

INTRODUCTION: While individuals live with dementia for many years, utilization and expenditures from disease onset through the end-of-life period have not been examined in ethnically diverse samples. METHODS: We used a multiethnic, population-based, prospective study of cognitive aging (Washington Heights-Inwood Columbia Aging Project) linked to Medicare claims to examine total Medicare expenditures and health care utilization among individuals with clinically diagnosed incident dementia from disease onset to death. RESULTS: High-intensity treatment (hospitalizations, life-sustaining procedures) was common and mean Medicare expenditures per year after diagnosis was $69,000. Non-Hispanic blacks exhibited higher spending relative to Hispanics and non-Hispanic whites 1 year after diagnosis. Non-Hispanic blacks had higher total (mean=$205,000) Medicare expenditures from diagnosis to death compared with non-Hispanic whites (mean=$118,000). Hispanics' total expenditures and utilization after diagnosis was similar to non-Hispanic whites despite living longer with dementia. DISCUSSION: Health care spending for patients with dementia after diagnosis through the end-of-life is high and varies by ethnicity.

Associations of Hospice Disenrollment and Hospitalization With Continuous Home Care Provision.

OBJECTIVES: To examine rates of hospice disenrollment and posthospice hospitalization among patients who are enrolled in hospices that provide continuous home care (CHC) (CHC hospices) compared with patients who are enrolled in hospices that do not offer CHC (non-CHC hospices). METHODS: We performed a retrospective cohort study among Medicare fee-for-service decedents between July and December 2011, who were 66 years and older and had used hospice in their last 6 months of life. We used propensity score matching to account for potential confounding characteristics of hospices. Generalized estimating equation models were applied to estimate between CHC hospices and non-CHC hospices the associations of hospice disenrollment/hospitalization, adjusted for patient characteristics. We also conducted subgroup analyses to examine how the association might have differed by hospice size, and by the percentage of enrollees who received CHC. RESULTS: After matching, we identified 936 pairs of CHC and non-CHC hospices, well balanced in terms of organizational characteristics. In fully adjusted models, compared with non-CHC hospices, CHC hospices had significantly lower disenrollment rates (adjusted rate ratio, 0.73; 95% confidence interval, 0.60-0.87), and lower hospitalization rates (adjusted rate ratio, 0.79; 95% confidence interval, 0.66-0.95). These associations were significantly more pronounced among larger hospices (those with >175 enrollees during study period), and among hospices in which at least 7.3% of enrollees used CHC. CONCLUSIONS: CHC hospices had significantly lower rates of hospice disenrollment and posthospice hospitalization, suggesting CHC service available may enable higher quality of end-of-life care.

The Impact of Reported Hospice Preferred Practices on Hospital Utilization at the End of Life.

BACKGROUND: The Affordable Care Act requires hospices to report quality measures across a range of processes and practices. Yet uncertainties exist regarding the impact of hospice preferred practices on patient outcomes. OBJECTIVE: Assess the impact of 6 hospice preferred practices and hospice organizational characteristics on hospital utilization and death using the first national data on hospice preferred practices. DESIGN: Longitudinal cohort study (2008-2011) of Medicare beneficiaries (N=149,814) newly enrolled in a national random sample of hospices (N=577) from the National Hospice Survey (84% response rate) and followed until death. OUTCOME MEASURES: The proportion of patients at each hospice admitted to the hospital, emergency department (ED), and intensive care unit (ICU), and who died in the hospital after hospice enrollment. RESULTS: Hospices that reported assessing patient preferences for site of death at admission had lower odds of being in the highest quartile for hospital death (AOR=0.36; 95% CI, 0.14-0.93) and ED visits (AOR=0.27; 95% CI, 0.10-0.76). Hospices that reported more frequently monitoring symptoms had lower odds of being in the highest quartile for ICU stays (AOR=0.48; 95% CI, 0.24-0.94). In adjusted analyses, a higher proportion of patients at for-profit compared with nonprofit hospices experienced a hospital admission (15.3% vs. 10.9%, P<0.001), ED visit (21.8% vs. 15.6%, P<0.001), and ICU stay (5.1% vs. 3.0%, P<0.001). CONCLUSIONS: Hospitalization of patients following hospice enrollment varies substantially across hospices. Two of the 6 preferred practices examined were associated with hospitalization rates and for-profit hospices had persistently high hospitalization rates regardless of preferred practice implementation.

End-of-Life Care Intensity and Hospice Use: A Regional-level Analysis.

OBJECTIVES: Despite increased hospice use over the last decade, end-of-life care intensity continues to increase. To understand this puzzle, we sought to examine regional variation in intensive end-of-life care and determine its associations with hospice use patterns. METHODS: Using Medicare claims for decedents aged 66 years and above in 2011, we assessed end-of-life care intensity in the last 6 months of life across hospital referral regions (HRRs) as measured by proportion of decedents per HRR experiencing hospitalization, emergency department use, intensive care unit (ICU) admission, and number of days spent in hospital (hospital-days) and ICU (ICU-days). Using hierarchical generalized linear models and adjusting for patient characteristics, we examined whether these measures were associated with overall hospice use, very short (≤7 d), medium (8-179 d), or very long (≥180 d) hospice enrollment, focusing on very short stay. RESULTS: End-of-life care intensity and hospice use patterns varied substantially across HRRs. Regional-level end-of-life care intensity was positively correlated with very short hospice enrollment. Comparing HRRs in the highest versus the lowest quintiles of intensity in end-of-life care, regions with more intensive care had higher rates of very short hospice enrollment, with adjusted odds ratios (AOR) 1.14 [99% confidence interval (CI), 1.04-1.25] for hospitalization; AOR, 1.23 (CI, 1.12-1.36) for emergency department use; AOR, 1.25 (CI, 1.14-1.38) for ICU admission; AOR, 1.10 (CI, 1.00-1.21) for hospital-days; and AOR, 1.20 (CI, 1.08-1.32) for ICU-days. CONCLUSIONS: At the regional level, increased end-of-life care intensity was consistently associated with very short hospice use.

Education, implementation, and policy barriers to greater integration of palliative care: A literature review.

BACKGROUND: Early integration of palliative care into the management of patients with serious disease has the potential to both improve quality of life of patients and families and reduce healthcare costs. Despite these benefits, significant barriers exist in the United States to the early integration of palliative care in the disease trajectory of individuals with serious illness. AIM: To provide an overview of the barriers to more widespread palliative care integration in the United States. DESIGN AND DATA SOURCES: A literature review using PubMed from 2005 to March 2015 augmented by primary data collected from 405 hospitals included in the Center to Advance Palliative Care's National Palliative Care Registry for years 2012 and 2013. We use the World Health Organization's Public Health Strategy for Palliative Care as a framework for analyzing barriers to palliative care integration. RESULTS: We identified key barriers to palliative care integration across three World Health Organization domains: (1) education domain: lack of adequate education/training and perception of palliative care as end-of-life care; (2) implementation domain: inadequate size of palliative medicine-trained workforce, challenge of identifying patients appropriate for palliative care referral, and need for culture change across settings; (3) policy domain: fragmented healthcare system, need for greater funding for research, lack of adequate reimbursement for palliative care, and regulatory barriers. CONCLUSION: We describe the key policy and educational opportunities in the United States to address and potentially overcome the barriers to greater integration of palliative care into the healthcare of Americans with serious illness.

Has Hospice Use Changed? 2000-2010 Utilization Patterns.

BACKGROUND: Hospice use has increased substantially during the past decade by an increasingly diverse patient population; however, little is known about patterns of hospice use and how these patterns have changed during the past decade. OBJECTIVE: To characterize Medicare hospice users in 2000 and 2010 and estimate the prevalence of (1) very short (≤1 wk) hospice enrollment; (2) very long (>6 mo) hospice enrollment; and (3) hospice disenrollment and how these utilization patterns have varied over time and by patient and hospice characteristics. RESEARCH DESIGN: Cross-sectional analysis of Medicare hospice claims data from 2000 and 2010. SUBJECTS: All US Medicare Hospice Benefit enrollees in 2000 (N=529,573) and 2010 (N=1,150,194). RESULTS: As of 2010, more than half (53.4%) of all Medicare decedents who used hospice had either very short (≤1 wk, 32.4%) or very long (>6 mo, 13.9%) hospice enrollment or disenrolled from hospice before death (10.6%). This represents an increase of 4.9 percentage points from 2000. In multivariable analysis, patients with noncancer diagnoses, the fastest growing group of hospice users, were approximately twice as likely as those with cancer to have very short or long enrollment periods and to disenroll from hospice. CONCLUSION: The substantial proportion of hospice users with very short or long enrollment, or enrollments that end before death, underscores the potential for interventions to improve the timing and appropriateness of hospice referral so that the full benefits of hospice are received by patients and families.

The Myth Regarding the High Cost of End-of-Life Care.

Health care reform debate in the United States is largely focused on the highly concentrated health care costs among a small proportion of the population and policy proposals to identify and target this "high-cost" group. To better understand this population, we conducted an analysis for the Institute of Medicine Committee on Approaching Death using existing national data sets, peer-reviewed literature, and published reports. We estimated that in 2011, among those with the highest costs, only 11% were in their last year of life, and approximately 13% of the $1.6 trillion spent on personal health care costs in the United States was devoted to care of individuals in their last year of life. Public health interventions to reduce health care costs should target those with long-term chronic conditions and functional limitations.

Individual Socioeconomic Factors Have a Greater Impact on End-of-Life Care Outcomes Than Regional Factors.

Background: End-of-life (EoL) care provided to Americans in urban and rural settings is distinct in terms of both available and delivered services. However, much less is known about which geographic, demographic, and health indicators are associated with disparities in EoL care and how individual versus regional characteristics influence quality of care (QoC). Objective: This study aimed to assess how regionality, rurality, and individual socioeconomic factors are associated with QoC in the last month of life (LML). Design: Nationally representative cross-sectional study using the proxy-completed LML questionnaire as part of the National Health and Aging Trends Study (NHATS). The data were linked at the zip code level to geographic and economic indicators. Settings/Subjects: A total of 2778 NHATS enrollees who died from 2012 to 2020. Measurements: Measurements included population density, socioeconomic indicators, health factors, and health outcomes. The primary independent variable was proxy-reported QoC during the LML (excellent vs. not excellent). Results: In our sample, 52.1% (n = 1447) reported not excellent care and 47.9% (n = 1331) reported excellent care. These populations varied in their demographic and socioeconomic characteristics. After accounting for survey weighting and design, decedents in the top (odds ratio [OR]: 1.58; 95% confidence interval [CI]: 1.08-2.32) income quartile had significantly greater odds of receiving excellent care than decedents in the bottom quartile. Decedents in zip codes with top quartile health outcome metrics had significantly greater odds of receiving excellent care (OR: 1.64; 95% CI: 1.17-2.29) than decedents in zip codes with bottom quartile health outcomes. County rurality index and county health factors were not correlated with QoC in the LML. Conclusions: High QoC at the EoL may be more associated with individual socioeconomic factors than regional indicators, including degrees of rurality. Clinicians should strive to recognize the interplay of individual characteristics and regional indicators to provide more personalized care.

Variation in Hospice Aide Care by Residential Setting.

Background: Hospice care frequently includes hands-on care from hospice aides, but the need for hospice aide care may vary in residential settings (e.g., assisted livings and nursing homes). Objectives: The objective of this study is to compare hospice aide use and factors associated with use across residential settings. Design: This longitudinal cohort study used data from Medicare beneficiaries in the United States enrolled in the Medicare Current Beneficiary Survey (MCBS) who died between 2010 and 2019 and had hospice claims and available residential setting data in MCBS (n = 1,915). Analysis: Decedent hospice aide use was compared by residential settings; multivariable models controlling for sociodemographic, clinical/functional, and hospice characteristics examined factors associated with hospice aide care in different residential settings. Results: Hospice aide visits were least common in the community setting (64.4% vs. 76.6% vs. 72.6% with any hospice aide visits in community, assisted living, and nursing home, respectively, p = 0.001). In adjusted models, factors associated with hospice aide visits did not significantly differ by residential settings. Conclusions: Despite staff providing hands-on support in assisted livings and nursing homes, hospice aide visits were more common in residential as opposed to community settings, and factors associated with hospice aide visits were similar among settings. To maximize the potentially positive impact of hospice aides on overall care, additional work is needed to understand when hospice aides are used and how hospice aides collaborate with families and care teams. This will help to ensure that hospice care is appropriately tailored to individual care needs in all residential settings.

Psychosocial distress among spouses of persons with dementia before and after their partner's death.

BACKGROUND: Spouses of persons living with dementia may face heightened psychosocial distress in the years immediately before and after their partner's death. We compared the psychosocial needs of spouses of partners with dementia with spouses of partners with non-impaired cognition nearing and after the end of life, focusing on loneliness, depression, life satisfaction, and social isolation. METHODS: We used nationally representative Health and Retirement Study married couples data (2006-2018), restricting to spouses 50+ years old. We included 2098 spouses with data on loneliness and depressive symptoms 2 years before and after the partner's death. We additionally examined a subset of spouses (N = 1113) with available data on life satisfaction and social isolation 2 years before their partner's death. Cognitive status of partners was classified as non-impaired cognition, cognitive impairment not dementia (cognitive impairment), and dementia. We used multivariable logistic regression to determine: 1) the change in loneliness and depression for spouses pre- and post-partner's death, and 2) life satisfaction and social isolation 2 years before the partner's death. RESULTS: Spouses were on average 73 years old (SD: 10), 66% women, 7% Black, 7% Hispanic non-White, 24% married to persons with cognitive impairment, and 19% married to partners with dementia. Before their partner's death, spouses married to partners with dementia experienced more loneliness (non-impaired cognition: 8%, cognitive impairment: 16%, dementia: 21%, p-value = 0.002) and depressive symptoms (non-impaired cognition: 20%, cognitive impairment: 27%, dementia: 31%, p-value < 0.001), and after death a similar prevalence of loneliness and depression across cognitive status. Before their partner's death, spouses of partners with dementia reported less life satisfaction (non-impaired cognition: 74%, cognitive impairment: 68%; dementia: 64%, p-value = 0.02) but were not more socially isolated. CONCLUSION: Results emphasize a need for clinical and policy approaches to expand support for the psychosocial needs of spouses of partners with dementia in the years before their partner's death rather than only bereavement.

Perspectives on Transfusions for Hospice Patients With Blood Cancers: A Survey of Hospice Providers.

CONTEXT: Patients with blood cancers have low rates of hospice use. While lack of transfusion access in hospice is posited to substantially contribute to these low rates, little is known about the perspectives of hospice providers regarding transfusion access in hospice. OBJECTIVES: To characterize hospice providers' perspectives regarding care for patients with blood cancers and transfusions in the hospice setting. METHODS: In 2022, we conducted a cross-sectional survey of a sample of hospices in the United States regarding their experience caring for patients with blood cancers, perceived barriers to hospice use, and interventions to increase enrollment. RESULTS: We received 113 completed surveys (response rate = 23.5%). Of the cohort, 2.7% reported that their agency always offers transfusions, 40.7% reported sometimes offering transfusions, and 54.9% reported never offering transfusions. In multivariable analyses, factors associated with offering transfusions included nonprofit ownership (OR 5.93, 95% CI, 2.2-15.2) and daily census >50 patients (OR 3.06, 95% CI, 1.19-7.87). Most respondents (76.6%) identified lack of transfusion access in hospice as a barrier to hospice enrollment for blood cancer patients. The top intervention considered as "very helpful" for increasing enrollment was additional reimbursement for transfusions (72.1%). CONCLUSION: In this national sample of hospices, access to palliative transfusions was severely limited and was considered a significant barrier to hospice use for blood cancer patients. Moreover, hospices felt increased reimbursement for transfusions would be an important intervention. These data suggest that hospice providers are supportive of increasing transfusion access and highlight the critical need for innovative hospice payment models to improve end-of-life care for patients with blood cancers.