Background: With ageing world populations, multimorbidity (presence of two or more chronic diseases in the same individual) becomes a major concern in public health. Although multimorbidity is associated with age, its prevalence varies. This systematic review aimed to summarise and meta-analyse the prevalence of multimorbidity in high, low- and middle-income countries (HICs and LMICs). Methods: Studies were identified by searching electronic databases (Medline, Embase, PsycINFO, Global Health, Web of Science and Cochrane Library). The term ‘multimorbidity’ and its various spellings were used, alongside ‘prevalence’ or ‘epidemiology’. Quality assessment employed the Newcastle-Ottawa scale. Overall and stratified analyses according to multimorbidity operational definitions, HICs/LMICs status, gender and age were performed. A random-effects model for meta-analysis was used. Results: Seventy community-based studies (conducted in 18 HICs and 31 LMICs) were included in the final sample. Sample sizes ranged from 264 to 162,464. The overall pooled prevalence of multimorbidity was 33.1% (95% confidence interval (CI): 30.0–36.3%). There was a considerable difference in the pooled estimates between HICs and LMICs, with prevalence being 37.9% (95% CI: 32.5–43.4%) and 29.7% (26.4–33.0%), respectively. Heterogeneity across studies was high for both overall and stratified analyses ( I 2 > 99%). A sensitivity analysis showed that none of the reviewed studies skewed the overall pooled estimates. Conclusion: A large proportion of the global population, especially those aged 65+, is affected by multimorbidity. To allow accurate estimations of disease burden, and effective disease management and resources distribution, a standardised operationalisation of multimorbidity is needed.

Objective To understand multidisciplinary team healthcare professionals’ perceptions of current and optimal provision of acute rehabilitation, perceived facilitators and barriers to implementation, and their implications for patient recovery, using hip fracture as an example. Methods A qualitative design was adopted using semi-structured telephone interviews with 20 members of the acute multidisciplinary healthcare team (occupational therapists, physiotherapists, physicians, nurses) working on orthopaedic wards at 15 different hospitals across the UK. Interviews were audio-recorded, transcribed verbatim, anonymised, and then thematically analysed drawing on the Theoretical Domains Framework to enhance our understanding of the findings. Results We identified four themes: conceptualising a model of rehabilitative practice, which reflected the perceived variability of rehabilitation models, along with facilitators and common patient and organisational barriers for optimal rehabilitation; competing professional and organisational goals, which highlighted the reported incompatibility between organisational goals and person-centred care shaping rehabilitation practices, particularly for more vulnerable patients; engaging teams in collaborative practice, which related to the expressed need to work well with all members of the multidisciplinary team to achieve the same person-centred goals and share rehabilitation practices; and engaging patients and their carers, highlighting the importance of their involvement to achieve a holistic and collaborative approach to rehabilitation in the acute setting. Barriers and facilitators within themes were underpinned by the lack or presence of adequate ways of communicating with patients, carers, and multidisciplinary team members; resources (e.g. equipment, staffing, group classes), and support from people in leadership positions such as management and senior staff. Conclusions Cornerstones of optimal acute rehabilitation are effective communication and collaborative practices between the multidisciplinary team, patients and carers. Supportive management and leadership are central to optimise these processes. Organisational constraints are the most commonly perceived barrier to delivering effective rehabilitation in hospital settings, which exacerbate silo working and limited patient engagement.

Gergana Manolova and colleagues argue for a comprehensive approach to the challenge of treating perinatal mental health conditions in maternal, neonatal, and child health services

Background The global refugee crisis has become central to health and policy debates. There is a growing need to investigate how acculturation impacts mental health among asylum seekers and refugees. Many forced migrants have an increased risk of experiencing negative mental health outcomes, but this review will only assess the current literature on acculturation and mental health among adults. Research questions include the following: (1) How is acculturation conceptualised? (2) What are the most salient mental health outcomes? (3) How are acculturation and mental health measured and related? and (4) How do macrostructural factors affect the relationship between mental health and acculturation? Methods We will use a meta-narrative approach to synthesise the breadth of acculturation and mental health literature from various research traditions. This review will include empirical studies measuring variations of acculturation and mental health among adult forced migrants from low- and middle-income countries residing in high-income countries. Studies will be retrieved from the following academic databases: MEDLINE, Embase, PsycINFO, Global Health, ProQuest Social Science and Web of Science. Additional studies will be collected from King’s College London’s online library databases and e-resources, and reference lists of eligible studies. Studies from database inception and written in English will be included. All full-text papers will undergo quality appraisal using the Mixed Methods Appraisal Tool (MMAT). Extracted data will be analysed using a conceptual framework analysis to construct overarching narratives and a framework that will describe the relationship between acculturation and mental health. Discussion A meta-narrative systematic review provides a flexible and systematic approach to synthesising the heterogeneous literature on acculturation and mental health. This review will guide the development of a conceptual framework to aid future research on acculturation among adult forced migrants. As high-income countries seek to integrate forced migrants into society and improve their access to vital resources, this review has the potential to transform policies and practices that influence migrant mental health. Systematic review registration PROSPERO CRD42018089148 Electronic supplementary material The online version of this article (10.1186/s13643-019-1103-8) contains supplementary material, which is available to authorized users.