Palliative Care Outcomes Collaboration Research Articles

Symptom- and function-based trajectories of patients with dementia in hospital and community palliative care settings in the last two weeks of life: a retrospective cohort study

BackgroundThe prevalence of dementia is increasing worldwide and many people with the condition require some level of palliative care. However, the trajectories of function and symptom burden in palliative care services at the end of life remain unclear. This study aimed to describe and compare the longitudinal trajectories of function and symptom burden among patients with dementia between hospital versus palliative community care services in the last two weeks of life.MethodsA retrospective cohort study used data from the Australian Palliative Care Outcomes Collaboration. Patients with dementia who died between 1 January 2013 and 31 December 2020 from the Australian Palliative Care Outcomes Collaboration. Four validated clinical instruments were used to collect outcomes on each individual’s function and symptom distress and severity. Multilevel models were used to estimate the differences in clinical trajectories between hospital and community-based palliative care in the last two weeks of life.ResultsPatients with dementia tended to have low levels of distress for most symptoms but increasing levels of functional impairment. There were no or only marginally significant differences in the symptom trajectories between the community and hospital groups (OR ranged from 0.57 to 1.97). Although clinical trajectories of function were relatively similar between two groups, statistically higher functional indicators were observed for people when admitted to community palliative care services (OR = 0.42 and 2.27, respectively).ConclusionsOur findings suggest that community-based palliative care services can be as effective as hospital-based care for many patients with dementia nearing the end of life. With appropriate support for families, community-based care could serve as a viable alternative to hospital-based care for some patients in the final stages of dementia.

The multinomial mixed-effect regression model for predicting PCOC phases in hospice patients

PurposeThe Palliative Care Outcomes Collaboration (PCOC) aims to enhance patient outcomes systematically. However, identifying crucial items and accurately determining PCOC phases remain challenging. This study aims to identify essential PCOC data items and construct a prediction model to accurately classify PCOC phases in terminal patients.MethodsA retrospective cohort study assessed PCOC data items across four PCOC phases: stable, unstable, deteriorating, and terminal. From July 2020 to March 2023, terminal patients were enrolled. A multinomial mixed-effect regression model was used for the analysis of multivariate PCOC repeated measurement data.ResultsThe dataset comprised 1933 terminally ill patients from 4 different hospice service settings. A total of 13,219 phases of care were analyzed. There were significant differences in the symptom assessment scale, palliative care problem severity score, Australia-modified Karnofsky performance status, and resource utilization groups-activities of daily living among the four PCOC phases of care. Clinical needs, including pain and other symptoms, declined from unstable to terminal phases, while psychological/spiritual and functional status for bed mobility, eating, and transfers increased. A robust prediction model achieved areas under the curves (AUCs) of 0.94, 0.94, 0.920, and 0.96 for stable, unstable, deteriorating, and terminal phases, respectively.ConclusionsCritical PCOC items distinguishing between PCOC phases were identified, enabling the development of an accurate prediction model. This model enhances hospice care quality by facilitating timely interventions and adjustments based on patients' PCOC phases.

Did the Palliative Care Outcomes Collaboration (PCOC) program lead to improved end-of-life care quality and reduced non-beneficial treatments?

Palliative Care Outcomes Collaboration (PCOC) is an internationally recognized program developed in Australia. Taiwan became the first country in Asia to implement PCOC in 2020. There is little research on the impact of PCOC in Asia. We sought to examine the effects of the Taiwan PCOC on palliative outcomes. The study analyzed the impact of PCOC with a retrospective cohort design. The hypotheses were that PCOC could improve end-of-life care quality and reduce non-beneficial treatments. The study enrolled patients with terminal illnesses from the inpatient palliative care units. General characteristics of participants were collected. Exclusion criteria were people without a diagnosis of terminal illness, aged 20 and younger, or with missing data. The study collected 1,121 patients, 555 in the PCOC comparison group and 566 in the intervention group. Most patients were with terminal cancer (88.58%). The rates of hospital deaths in the PCOC and non-PCOC groups were 68.73% vs. 74.95% (P = 0.021). A multivariable logistic regression model, adjusting for age, sex, Charlson comorbidity index, and terminal cancer status, was utilized. The PCOC intervention significantly decreased hospital deaths (OR = 0.26, 95%CI 0. 16-0.41, P < 0.001). PCOC in Taiwan significantly reduced hospital deaths among terminal patients, possibly due to effective symptom management and improved communication via the use of patient-reported outcomes. Further research is needed to support PCOC implementation in Asia and investigate collaboration programs' impact on end-of-life care quality and non-beneficial treatments.

Driving quality in delirium care through a patient-centered monitoring system in palliative care: Protocol for the two-staged exploratory sequential mixed methods MODEL-PC study

Introduction Delirium is a serious acute neurocognitive condition that is common in palliative care units and yet under-addressed. To improve delirium care in this setting, we will develop and pilot a monitoring system that integrates the Delirium Clinical Care Standard, Palliative Care Outcomes Collaboration (PCOC) methods, and perspectives of patients, carers and staff. Methods This paper reports the protocol for a two-stage, exploratory, sequential mixed-methods implementation study. Stage 1 data collection includes Delirium Standard-aligned process mapping and clinical audits, and Critical Incident Technique interviews with patients, carers and staff with a recent experience of delirium. We will present integrated stage 1 findings to stakeholders then collaboratively develop a delirium monitoring system that aligns with the Delirium Standard and PCOC methods. In stage 2, we will pilot the new system and repeat stage 1 data collection and analyses, adding PCOC and adverse event measures. Implementation principles and strategies such as audit and feedback and education will be applied. We developed simplified participants information sheets and consent forms for interview and process mapping participants, who will provide written informed consent; and waiver of consent to collect clinical audit, PCOC and adverse event data from patients’ medical records is approved. At study end, we will report implementation, effectiveness and safety outcomes, including systemic utility of the delirium monitoring system for wider testing and use to meet the Delirium Standard in palliative care units. Quantitative data analyses will include descriptive and inferential statistics and qualitative analyses will incorporate thematic content analysis aligned to the Critical Incident Technique. Mixed methods data integration will be at the end of each stage. Discussion This protocol paper describes the mixed methods, systems integration, and innovative measures and study processes of the MODEL-PC study. We also share data collection tools and a simplified information sheet and consent form for patients.

The effects of virtual reality interventions on occupational participation and distress from symptoms in palliative care patients: A pilot study.

Virtual reality (VR) offers the prospect of a safe and effective adjunct therapeutic modality to promote mental health and reduce distress from symptoms in palliative care patients. Common physiological and psychological symptoms experienced at the end of life may impact the person's participation in day-to-day activities that bring them meaning. The purpose of this study was to examine the effect of VR interventions on occupational participation and distress from symptoms. To describe the stimulus, results, and learnings from a single-site pilot study of virtual reality therapy in a specialist palliative care setting. Participants engaged in a VR session lasting from 9 to 30 minutes related to coping with pain, inner peace and mindfulness, adventure, and bucket list. The pilot prospective quantitative observational cohort study was conducted from November 2021 through March 2022 using a pre-post VR intervention research design. Quantitative data was collected using patient-rated assessments and a wireless pulse oximeter. Occupational performance, satisfaction, and distress symptoms were measured using the Canadian Occupational Performance Measure and the Palliative Care Outcomes Collaboration Symptom Assessment Scale (PCOC SAS). The intervention and study design adhered to international guidelines. Ten participants engaged in the VR interventions. Data showed significantly improved occupational performance and satisfaction scores (p < .001), decreases in PCOC SAS distress from pain (p = .01), fatigue (p < .001), and heart rate (p = .018). No adverse side effects were observed. Outcomes included an analysis of virtual reality's effectiveness to alleviate symptom burden and increase occupational participation for palliative care patients. Of specific interest to the research team was the application of virtual reality in a community-based and inpatient palliative care context to supplement allied health services and its feasibility of integration into standard palliative care. VR therapy showed positive improvements in the participants' occupational performance, satisfaction, and distress from pain and fatigue.

The experience of Australian aged care workers during a trial implementation of a palliative care outcomes programme.

End of life care is an essential part of the role of Australian aged care homes (ACHs). However, there is no national framework to support aged care staff in systematically identifying residents with palliative care needs or to routinely assess, respond to, and measure end of life needs. The Palliative Care Outcomes Collaboration (PCOC) is a national outcomes and benchmarking programme which aims to systematically improve palliative care for people who are approaching the end of life, and for their families and carers. The PCOC Wicking Model for Residential Aged Care was developed and piloted in four Australian ACHs. This paper reports on the qualitative findings from semi-structured interviews and focus groups conducted with ACH staff (N=37) to examine feasibility. Thematic analysis identified three overarching themes about the pilot: (i) processes to successfully prepare and support ACHs; (ii) appropriateness of PCOC tools for the ACH setting; and (iii) realised and potential benefits of the model for ACHs. The lessons presented valuable insights to refine the PCOC Wicking Model and enrich understanding of the potential challenges and solutions for implementing similar programs within ACHs in future. The results suggest that key to successfully preparing ACHs for implementation of the PCOC Wicking Model is an authentic and well-paced collaborative approach with ACHs to ensure the resources, structures and systems are in place and appropriate for the setting. The PCOC Wicking Model for Residential Aged Care is a promising prototype to support ACHs in improving palliative and end of life care outcomes for residents and their carers.

Palliative care needs and specialist services post stroke: national population-based study

Objectives(1) To compare palliative care needs of patients admitted primarily with stroke and (2) to determine how the care needs of these patients affect their use of different types of...

Death place and palliative outcome indicators in patients under palliative home care service: an observational study

BackgroundDying at home accompanied by loved-ones is regarded favorably and brings good luck in Taiwan. This study aimed to examine the relevant factors affecting whether an individual dies at home or not in a group of terminal patients receiving palliative home care service.MethodsThe patients who were admitted to a palliative home care service at a hospital-affiliated home health care agency were consecutively enrolled between March 1, 2021 and March 31, 2022. During the period of care, the instruments of the palliative care outcomes collaboration was used to assess patients in each home visit twice a week, including symptom assessment scale, palliative care problem severity score, Australia-modified Karnofsky performance status, resource utilization groups-activities of daily living, and palliative care phase.ResultsThere were 56 participants (53.6% female) with a median age of 73.0 years (interquartile range (IQR) 61.3–80.3 y/o), of whom 51 (91.1%) patients were diagnosed with cancer and 49 (96.1%) had metastasis. The number of home visits was 3.5 (IQR 2.0–5.0) and the average number of days under palliative home care service was 31 (IQR 16.3–51.5) before their death. After the end of the study, there was a significant deterioration of sleeping, appetite, and breathing problems in the home-death group, and appetite problems in the non-home death patients. However, physician-reported psychological/spiritual problems improved in the home-death group, and pain improved in the non-home death patients. Physical performance deteriorated in both groups, and more resource utilization of palliative care was needed. The 44 patients who died at home had greater cancer disease severity, fewer admissions, and the proportion of families desiring a home death for the patient was higher.ConclusionsAlthough the differences in palliative outcome indicators were minor between patients who died at home and those who died in the hospital, understanding the determinants and change of indicators after palliative care service at different death places may be helpful for improving the quality of end-of-life care.

Palliative care symptoms and problems in a culturally and linguistically diverse population: large retrospective cohort study

ObjectivesMigrant Australians with cancer have higher unmet needs and poorer health-related quality of life. Less is known about their palliative care experience. We aimed to assess comparative symptom distress and...

Exploring Risk Factors of Unexpected Death, Using Palliative Care Outcomes Collaboration (PCOC) Measures, among Terminal Patients Receiving Palliative Care in Taiwan.

Palliative care has the ability to relieve both physical discomfort and psychological distress in terminally ill patients. However, unexpected death may still occur in palliative care settings. This study aimed to utilize Palliative Care Outcomes Collaboration (PCOC) data to better determine any associated factors which may surround unexpected death in palliative care settings. Data were extracted from the PCOC database by the palliative care team within Taichung Veterans General Hospital (TCVGH). Data of deceased patients were extracted during the period from January 2021 to December 2021 from multiple palliative care settings. The deaths of patients whose last recorded palliative phase was 1–3 were defined as unexpected. A total of 280 deceased patients were included, with mean age at death being 67.73, 61% being male, and 83.2% cancer patients. We discovered that shortness of breath, as assessed by the Symptom Assessment Scale (SAS), decreased risk of unexpected death (OR: 0.91, 95% CI: 0.84–0.98), while impending death discharge (OR: 3.93, 95% CI: 1.20–12.94) and a higher Australia-modified Karnofsky performance status (AKPS) score (OR: 1.15, 95% CI: 1.10–1.21) were associated with unexpected death. Thus, medical staff must inform the family of patients early on regarding any risk factors surrounding unexpected death to help everyone involved be prepared in advance.

The Impact of ASCITIC Paracentesis on Symptomatic Outcomes in Palliative Patients: 3-Year Experience of a Melbourne Inpatient Palliative Care Unit Using Palliative Care Outcomes Collaboration Assessments

Background Ascites formation is a common occurrence in patients receiving palliative care. This is associated with symptoms that may respond to drainage. Aim To review and quantify ascites-related symptoms pre- and post-paracentesis to evaluate its benefit in an inpatient palliative care setting. Methods A retrospective audit of patients admitted to an inpatient palliative care unit who underwent paracentesis between November 2016 to June 2020 was performed. The primary outcome was a symptomatic benefit of paracentesis. Secondary outcomes assessed the associated complications as well as the alterations to functional status. Data were analysed using a paired T-test. Results 43 instances of ascitic paracentesis were performed on a total of 26 patients. Three patients were excluded from the study due to the technical failure of their paracentesis procedure. There was a mean 0.16-point reduction in pain (95% confidence interval (CI) −0.33 to 0.65), a mean 0.03-point increase in dyspnoea (95% CI −0.51 to 0.46), and a mean 0.32-point reduction in nausea (95% CI −0.09 to 0.74). Conclusions Ascitic paracentesis in the palliative setting may demonstrate some benefit in managing symptoms associated with ascites. Although the findings of this study did not achieve statistical significance, these results may be substantiated by future studies with larger sample size.

Appetite-Related Distress Is Burdensome in the Last Sixty Days of Life of People Receiving Palliative Care: A National Longitudinal Consecutive Cohort Study.

Background: People with life-limiting illnesses experience a range of distressing symptoms. Appetite-related symptoms are common, but studies have found varied prevalence and the distress caused has had limited quantification. Objectives: To examine the clinicodemographic factors and trajectory of appetite-related distress in the last 60 days of life. Design/Setting/Subjects: Consecutive cohort of 109,385 patients (359,038 data points) using specialist palliative care services in the Australian Palliative Care Outcomes Collaboration (PCOC). Measurements: Patient-reported appetite-related distress using the PCOC Symptom Assessment Scale. Results: Diagnoses included cancer (75%), end-stage organ failure (11%), neurodegenerative disease (4%), dementia (3%), and other noncancer (7%). Fifty-eight percent reported some degree of appetite-related distress at least once in the last 60 days of life. Daily mean distress scores did not vary greatly by diagnosis and the distributions of symptom severity were not linked with performance status. There was a sharp decline in mean distress for all diagnostic groups around 7-10 days before death. Moderate to severe distress was associated with nausea-, bowel-, pain-, and breathing-related distress, controlling for key baseline factors. Conclusion: Appetite-related distress is prevalent and burdensome in the 60 days before death and is strongly associated with distress from other cardinal symptoms.

The PCOC Symptom Assessment Scale (SAS): A valid measure for daily use at point of care and in palliative care programs.

BackgroundVery few measures are used successfully as part of routine care within national palliative care outcome programs. Only a handful of studies examine these measures. The aim of this study is to evaluate the validity of a measure used in a national outcomes program: the Palliative Care Outcomes Collaboration Symptom Assessment Scale (PCOC SAS).MethodsA retrospective multi-site cohort study with secondary analysis of routinely collected patient-level data to assess PCOC SAS’s internal consistency, construct validity, reliability, interpretability, acceptability and sensitivity. The analyses used two sets, with data collected by inpatient and community palliative care services registered with the Australian national PCOC.ResultsDataset one included 1,117 patients receiving palliative care from 21 services. Dataset two included 5,294 patients receiving palliative care from 119 PCOC services. PCOC SAS demonstrated the ability to detect and discriminate distress by palliative care phase, functional status and diagnosis. Excellent and good convergent and discriminant validity were demonstrated. Fair through to substantial inter-rater and intra-rater reliability levels were evidenced. Sufficient interpretability resulted along with necessary levels of acceptability and sensitivity.ConclusionPCOC SAS is a valid and reliable patient-reported outcome measure suitable for use in routine clinical care with patients requiring palliative and or end-of-life care, including in national outcomes programs.

Occurrence and timely management of problems requiring prompt intervention among Indigenous compared with non-Indigenous Australian palliative care patients: a multijurisdictional cohort study

ObjectivesAnticipation and prompt relief of symptoms among patients with a life-limiting illness is a core element of palliative care. Indigenous Australians commonly encounter cultural barriers in healthcare that may impair...

Comparing functional decline and distress from symptoms in people with thoracic life-limiting illnesses: lung cancers and non-malignant end-stage respiratory diseases

BackgroundMalignant and non-malignant respiratory diseases account for >4.6 million deaths annually worldwide. Despite similar symptom burdens, serious inequities in access to palliative care persists for people with non-malignant respiratory diseases.AimTo...

The Level of Distress From Fatigue Reported in the Final Two Months of Life by a Palliative Care Population: An Australian National Prospective, Consecutive Case Series

ContextFatigue is the most commonly reported symptom in life-limiting illnesses, although not much is known about the distress it causes patients as they approach death. ObjectivesTo map the trajectory of distress from fatigue reported by an Australian palliative care population in the last 60 days leading up to death. MethodsA prospective, longitudinal, consecutive cohort study using national data from the Australian Palliative Care Outcomes Collaboration between July 1, 2013, and December 31, 2018. Patients were included if they had at least one measurement of fatigue on a 0–10 numerical rating scale in the 60 days before death. Descriptive statistics were used to analyse patients by diagnostic cohort and functional status. ResultsA total of 116,604 patients from 203 specialist palliative care services were analyzed, providing 501,104 data points. Distress from fatigue affected up to 80% of patients referred to palliative care, with the majority experiencing moderate or severe distress. Malignant and nonmalignant diagnoses were equally affected, with the neurological cohort showing the greatest variability. The degree of distress correlated with a patient's functional level; it worsened as a patient's function declined until a patient became bedbound when the reporting of distress reduced. ConclusionsDistress from fatigue is high in this cohort of patients. Interventions to reduce this distress need to be a research priority.

Palliative care needs and utilization of specialist services for people imminently dying with dementia: A national population-based study

BackgroundThere is a growing emphasis on the importance of availability of specialist palliative care for people living with dementia. However, for people imminently dying with dementia, we still have little knowledge about their palliative care needs and utilization of different specialist services. ObjectivesTo (i) assess palliative care needs and other clinical and social characteristics of people imminently dying with dementia on their last admission in the context of community and inpatient palliative care services before death; (ii) compare care needs between patients requiring community-based and inpatient services; (iii) determine how and whether such care needs affect utilization of different palliative care services. DesignObservational study using data from the Australian Palliative Care Outcomes Collaboration. SettingsSpecialist palliative care services across Australia registered in the Palliative Care Outcomes Collaboration. ParticipantsA total of 3361 people who required specialist palliative care principally for dementia (including Alzheimer's disease and other dementias), and whose death occurred between 1 January 2013 and 31 December 2018. MethodsFive validated clinical instruments were used to collect point-of-care outcomes on each individual's function (Resource Utilisation Groups - Activities of Daily Living & Australia-modified Karnofsky Performance Status), symptom distress (Symptoms Assessment Scale & Palliative Care Problem Severity Score) and other clinical characteristics (Palliative Care Phases). We fitted multivariate logistic regression models to examine the association between these clinical outcomes and utilization of different specialist palliative care services. ResultsThe majority of people imminently dying with dementia had absent or mild levels of symptom distress but experienced high levels of functional decline and needed substantial assistance with basic tasks of daily living in their last days of life. Large disparities in symptoms distress and functional decline between inpatient and community groups were not observed although differences in assessment scores were often statistically significant. Poor functional outcomes (odds ratio = 1.77, 95% confidence interval: 1.24–2.52) and “non-stable” palliative care phases (odds ratio =24.51, 95% confidence interval: 12.03–49.96) were positively associated with use of inpatient versus community palliative care, whereas there was no clear association between the majority of symptoms and use of different care services. ConclusionsThe majority of people imminently dying with dementia could potentially benefit from greater access to supportive services in the community. Development of a dementia-specific palliative care pathway is needed to promote needs-based palliative care delivery models. Tweetable abstractthe majority of people imminently dying with dementia could potentially benefit from greater access to supportive services in community.

Symptom-Related Distress among Indigenous Australians in Specialist End-of-Life Care: Findings from the Multi-Jurisdictional Palliative Care Outcomes Collaboration Data.

Symptom relief is fundamental to palliative care. Aboriginal and Torres Strait Islander (Indigenous) Australians are known to experience inequities in health care delivery and outcomes, but large-scale studies of end-of-life symptoms in this population are lacking. We compared symptom-related distress among Indigenous and non-Indigenous Australian patients in specialist palliative care using the multi-jurisdictional Palliative Care Outcomes Collaboration dataset. Based on patient-reported rating scale responses, adjusted relative risks (aRRs) stratified by care setting were calculated for occurrence of (i) symptom-related moderate-to-severe distress and worsening distress during a first episode of care and (ii) symptom-related moderate-to-severe distress at the final pre-death assessment. The p-value significance threshold was corrected for multiple comparisons. First-episode frequencies of symptom-related distress were similar among Indigenous (n = 1180) and non-Indigenous (n = 107,952) patients in both inpatient and community settings. In final pre-death assessments (681 Indigenous and 67,339 non-Indigenous patients), both groups had similar occurrence of moderate-to-severe distress when care was provided in hospital. In community settings, Indigenous compared with non-Indigenous patients had lower pre-death risks of moderate-to-severe distress from overall symptom occurrence (aRR 0.78; p = 0.001; confidence interval [CI] 0.67–0.91). These findings provide reassurance of reasonable equivalence of end-of-life outcomes for Indigenous patients who have been accepted for specialist palliative care.

The trajectory of functional decline over the last 4 months of life in a palliative care population: A prospective, consecutive cohort study.

Understanding current patterns of functional decline will inform patient care and has health service and resource implications. This prospective consecutive cohort study aims to map the shape of functional decline trajectories at the end of life by diagnosis. Changes in functional status were measured using the Australia-modified Karnofsky Performance Status Scale. Segmented regression was used to identify time points prior to death associated with significant changes in the slope of functional decline for each diagnostic cohort. Sensitivity analyses explored the impact of severe symptoms and late referrals, age and sex. In all, 115 specialist palliative care services submit prospectively collected patient data to the national Palliative Care Outcomes Collaboration across Australia. Data on 55,954 patients who died in the care of these services between 1 January 2013 and 31 December 2015 were included. Two simplified functional decline trajectories were identified in the last 4 months of life. Trajectory 1 has an almost uniform slow decline until the last 14 days of life when function declines more rapidly. Trajectory 2 has a flatter more stable trajectory with greater functional impairment at 120 days before death, followed by a more rapid decline in the last 2 weeks of life. The most rapid rate of decline occurs in the last 2 weeks of life for all cohorts. Two simplified trajectories of functional decline in the last 4 months of life were identified for five patient cohorts. Both trajectories present opportunities to plan for responsive healthcare that will support patients and families.

Prevalence and severity of sleep difficulty in patients with a CNS cancer receiving palliative care in Australia.

The literature describing the incidence of sleep difficulty in CNS cancers is very limited, with exploration of a sleep difficulty symptom trajectory particularly sparse in people with advanced disease. We aimed to establish the prevalence and longitudinal trajectory of sleep difficulty in populations with CNS cancers receiving palliative care nationally, and to identify clinically modifiable predictors of sleep difficulty. A consecutive cohort of 2406 patients with CNS cancers receiving palliative care from sites participating in the Australian national Palliative Care Outcomes Collaboration were evaluated longitudinally on patient-reported sleep difficulty from point-of-care data collection, comorbid symptoms, and clinician-rated problems. Multilevel models were used to analyze patient-reported sleep difficulty. Reporting of mild to severe sleep difficulties ranged from 10% to 43%. Sleep scores fluctuated greatly over the course of palliative care. While improvement in patients' clinical status was associated with less sleep difficulty, the relationship was not clear when patients deteriorated. Worsening of sleep difficulty was associated with higher psychological distress (P < .0001), greater breathing problems (P < .05) and pain (P < .05), and higher functional status (P < .001) at the beginning of care. Sleep difficulty is prevalent but fluctuates widely in patients with CNS cancers receiving palliative care. A better-tailored sleep symptom assessment may be needed for this patient population. Early interventions targeting psychological distress, breathing symptoms, and pain for more functional patients should be explored to see whether it reduces sleep difficulties late in life.