This is the protocol for an updated Campbell systematic review. The objectives are as follows: To evaluate the effect of behavioral interventions on smoking cessation among homeless individuals.

BACKGROUND: Homeless people often suffer from complex and chronic comorbidities, have high rates of morbidity and die at much younger ages than the general population. Due to a complex combination of physical, psychosocial and addiction problems at the end of life, they often have limited access to palliative care. Both the homeless and healthcare providers experience a lot of barriers. Therefore, providing palliative care that fits the needs and concerns of the homeless is a challenge to healthcare providers. This systematic review aims to summarize evidence about the concerns, palliative care needs and preferences of homeless people, as well as barriers and facilitators for delivering high quality palliative care. METHODS: PubMed, Embase, PsycINFO, CINAHL and Web of Science were searched up to 10 May 2016. Included were studies about homeless people with a short life expectancy, their palliative care needs and the palliative care provided, that were conducted in Western countries. Data were independently extracted by two researchers using a predefined extraction form. Quality was assessed using a Critical Appraisal instrument. The systematic literature review was based on the PRISMA statement. RESULTS: Twenty-seven publications from 23 different studies met the inclusion criteria; 15 studies were qualitative and eight were quantitative. Concerns of the homeless often related to end-of-life care not being a priority, drug dependence hindering adequate care, limited insight into their condition and little support from family and relatives. Barriers and facilitators often concerned the attitude of healthcare professionals towards homeless people. A respectful approach and respect for dignity proved to be important in good quality palliative care. CONCLUSIONS: A patient-centred, flexible and low-threshold approach embodying awareness of the concerns of homeless people is needed so that appropriate palliative care can be provided timely. Training, education and experience of professionals can help to accomplish this.

OBJECTIVE: Identify, describe and appraise trials of interventions delivered by healthcare professionals to manage non-communicable diseases (NCDs) and communicable diseases that require long-term care or treatment (LT-CDs), excluding mental health and substance use disorders, in homeless adults. DESIGN: Systematic review of randomised controlled trials (RCTs), non-RCTs and controlled before-after studies. Interventions characterised using Effective Practice and Organisation of Care (EPOC) taxonomy. Quality assessed using EPOC risk of bias criteria. DATA SOURCES: Database searches (MEDLINE, Embase, PsycINFO, Scopus, Cumulative Index to Nursing and Allied Health Literature (CINAHL), Applied Social Sciences Index and Abstracts (ASSIA) and Cochrane Central Register of Controlled Trials), hand searching reference lists, citation searches, grey literature and contact with study authors. SETTING: Community. PARTICIPANTS: Adults (>/=18 years) fulfilling European Typology of Homelessness criteria. INTERVENTION: Delivered by healthcare professionals managing NCD and LT-CDs. OUTCOMES: Primary outcome: unscheduled healthcare utilisation. SECONDARY OUTCOMES: mortality, biological markers of disease control, adherence to treatment, engagement in care, patient satisfaction, knowledge, self-efficacy, quality of life and cost-effectiveness. RESULTS: 11 studies were included (8 RCTs, 2 quasi-experimental and 1 feasibility) involving 9-520 participants (67%-94% male, median age 37-49 years). Ten from USA and one from UK. Studies included various NCDs (n=3); or focused on latent tuberculosis (n=4); HIV (n=2); hepatitis C (n=1) or type 2 diabetes (n=1). All interventions were complex with multiple components. Four described theories underpinning intervention. Three assessed unscheduled healthcare utilisation: none showed consistent reduction in hospitalisation or emergency department attendance. Six assessed adherence to specific treatments, of which four showed improved adherence to latent tuberculosis therapy. Three concerned education case management, all of which improved disease-specific knowledge. No improvements in biological markers of disease (two studies) and none assessed mortality. CONCLUSIONS: Evidence for management of NCD and LT-CDs in homeless adults is sparse. Educational case-management interventions may improve knowledge and medication adherence. Large trials of theory-based interventions are needed, assessing healthcare utilisation and outcomes as well as assessment of biological outcomes and cost-effectiveness

Homelessness is associated with poorer health status, and affects men, women, children, and veterans alike across the United States. With over half a million-people suffering from homelessness on any given night, it is imperative that the health care delivery system step in to help this vulnerable group. Registered nurses encounter people experiencing homelessness in hospitals, clinics, shelters, and across the public health sector. They have the necessary skills to help make positive health-related changes for homeless populations and improve their overall quality of life. Therefore, the purpose of this systematic review was to (a) assess existing nurse-led interventional studies with homeless populations, (b) highlight effective methods that nurses used to impact care, and (c) make recommendations about future research needed. PRISMA guidelines were used and multiple databases were searched for nurse-led interventional research with those experiencing homelessness. Recommendations include using a holistic nursing approach when working to improve outcomes for homeless populations to ensure optimal treatment for their complex physical, mental, and social health problems.