To conduct the scoping review, we will consider the six stages recommended by Arksey and O'Malley, and Levac et al. (25,26). This protocol has been registered within the Open Science Framework (Registration link: https://osf.io/kjhzt). Besides, it is developed by following the guidance of Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols (PRISMA-P) (27) (the see checklist is provided as Additional File 1). The result will be reported in accordance with the reporting guidance provided in the Preferred Reporting Items for Systematic Reviews and Meta-analyses extension for Scoping Reviews (PRISMA-ScR) statement (28).
Stage 1: Identifying the research questions
Collaborating with researchers from Johns Hopkins Bloomberg School of Public Health (JHSPH) and Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ), India, three research questions are proposed with a broader scope while having a precise aim, listed in the previous section.
Stage 2: Identifying relevant literature
The literature search will include a broad range of terms and keywords related to three concepts - "integrated care model", "primary and secondary care system", and "low- and middle-income countries". The primary source of evidence will be a structured literature search of five electronic databases (from 2000-2020): PubMed/MEDLINE, EMBASE, Scopus, Web of Science, and Global Index Medicus. The secondary source of potentially relevant material will be a search of the grey literature, including institutional websites (e.g., WHO and World Bank), Health Policy Plus, Google Scholar, and OpenGrey. Besides, hand-searching of the reference lists will be performed for selected articles and policy reports. If necessary, subject matter experts and prolific authors in the field will be contacted based on the study's feasibility and necessity.
The review team will lead the design and implementation of the search strategy, and we will actively consult with a health information specialist (29). A draft search strategy for PubMed/MEDLINE is provided in Additional File 2. After implementing the search, the title and abstracts will be downloaded, and citations will be imported into Covidence systematic review software (covidence.org). At this stage, we will remove the duplicates and organize the search records to review their titles and abstracts.
Stage 3: Screening and selection procedure
We have used the "Population-Concept-Context (PCC)" framework (30) to align our study selection process with the specific research questions mentioned in the previous section. The preliminary inclusion and exclusion criteria for the screening are presented in Table 1.
The review will include a wide range of documents, such as peer-reviewed publications, methodological papers, and grey literature, published in the English language from 2000 to 2020. However, we decided not to include chart reviews, opinion papers, case reports, editorials, and conference proceedings. Most importantly, to be included in the review, the document or article will need to include evidence on the primary-secondary integrated health care model in low- and middle-income countries, which we have considered as (see supplemental material Additional File 2 for further details):
The approach towards vertical integration of primary and secondary healthcare systems, which requires a set of coordinated strategies that involve streamlining the organizational arrangements, functional processes, service delivery apparatuses, clinical operations, and community-health facility interfaces – either by implementing independently or in any specific combinations – for incorporating secondary care functions within the primary care settings or vice versa, enabling upstream and/or downstream restructuring by augmenting health systems resources – within one setting or across health facilities – to provide evidence-based, people-centered and high-quality healthcare service and, simultaneously, to improve the performance of health systems.
Following these criteria, two independent reviewers will screen the title and the abstract (or executive summary) of the searched documents. For those eligible peer-reviewed journal articles and grey literature, which will appear to represent the subject of our scoping review, copies of the full documents will be obtained. Next, the reviewers will read the full document and decide to include the article/report in the review process. The research team will regularly review the result of the screening process and discuss the discrepancies. In the case of an undisputed disagreement, a senior researcher will take the role of arbitrator to resolve the issue. We acknowledge that literature search and screening is an iterative process, and we will pragmatically adapt the search criteria if necessary and reiterate the screening process (25).
Stage 4: Charting the data
Full-text articles included in the scoping review will be re-appraised, and information will be charted using a data extraction form (30). Focusing on the research question identified in stage one, we have developed a data extraction form to summarize the evidence from the document. The themes and variables included in the data extraction form are presented in Table 2, and the extended version of the data extraction form is provided in Additional File 2 as supplemental material.
Two distinct sets of information will be charted using the data extraction form. The first set of information is related to the characteristics of the article, which will include – the source of the article, title, authors, publication year, country where the study was conducted, or the evidence was generated, country type (low-income or lower-middle-income), WHO region, study populations, study location (urban or rural), design and methodology of the study, etc.
The second set of information is specific to this scoping review which are, but not limited to – definition of integrated care, typologies of integration, type of service integrated, health systems building blocks integrated, mechanism of integration, the structure of integration, the intensity of integration, organizational and operational components of integration, success, facilitators, bottlenecks and unintended consequences. Detailed descriptions of each of the scoping review specific thematic areas are presented in the supplementary materials of Additional File 2.
A team of two researchers will conduct the data charting process. The process will start with a pilot exercise, where the two data extractors will independently chart the data from the same five eligible articles in parallel using an initial draft of data extraction from (developed based on Table 2). A workshop will be conducted in the presence of a third senior researcher as an arbitrator to triangulate the extracted data to streamline and harmonize the data charting process between the two researchers. Next, the eligible articles will be divided among the two researchers for completing the charting process. After completing every ten articles, the senior researcher will moderate a review meeting to go over the extraction process and resolve any impending or unintended issues in the charting process. During this stage, if additional details regarding an article or report are required, we will try to reach out to the investigators for additional information while pragmatically considering the time and resources required for this process.
Stage 5: Collating and reporting the results
In the fifth stage, the charted information will be summarized into thematic areas and reported in a narrative format with tables and illustrations. We will present an overview of the material included in the screening and the review process. Based on the number of articles, we will use Dedoose (dedoose.com) to extract the emergent themes and patterns from the data if necessary. The result will be clustered and presented to explore the geographic, socioeconomic, and health system variation across the countries.
Stage 6: Expert Consultation
While Arksey and O'Malley suggested expert consultation as optional for scoping review (25), we agree with Levac et al. (26) that this stage is essential for finalizing the scoping review. We also intend to perform a consultation exercise after developing the initial report of the scoping review. This scoping review is commissioned to inform and provide pragmatic recommendations to the AB program to lead a discussion for instilling PSI models as an instrument for achieving UHC. Thus, we need to organize the result and collate the evidence of our review to be palatable for the policymakers and public health practitioners in India. We will develop a roster of researchers from JHSPH, GIZ, and other organizational networks, practitioners, and public health policymakers for this consultation process to strengthen the review (31). This is a critical component of our study as this part links the evidence with the ground reality of the Indian health system. Translating the finding of the review into pragmatic recommendations for adopting a PSI model is critical for this formative exercise.