A critical review of literature and a conceptual framework for organizing and researching urban health and community health services in low- and middle-income countries.

Low- and middle-income countries (LMICs) are rapidly urbanizing, and in response to this, there is an expansion in the body of scholarship and significant policy interest in urban healthcare provision. The idea and the reality of 'urban advantage' have meant that health research in LMICs has disproportionately focused on health and healthcare provision in rural contexts and is yet to sufficiently engage with urban health as actively. We contend that this research and practice can benefit from a more explicit engagement with the rich conceptual understandings that have emerged in other disciplines around the urban condition. Our critical review included publications from four databases (MEDLINE, EMBASE, CINAHL, and Social Sciences Citation Index) and two Community Health Worker (CHW) resource hubs. We draw upon scholarship anchored in sociology to unpack the nature and features of the urban condition; we use these theoretical insights to critically review the literature on urban community health worker programs as a case to reflect on community health practice and urban health research in LMIC contexts. Through this analysis, we delineate key features of the urban, such as heterogeneity, secondary spaces and ties, size and density, visibility and anonymity, precarious work and living conditions, crime, and insecurity, and specifically the social location of the urban CHWs and present their implications for community health practice. We propose a conceptual framework for a distinct imagination of the urban to guide health research and practice in urban health and community health programs in the LMIC context. The framework will enable researchers and practitioners to better engage with what entails a 'community' and a 'community health program' in urban contexts.