Input, process, and output factors contributing to quality of antenatal care services: a scoping review of evidence

BACKGROUND: High-quality antenatal care (ANC) provides a lifesaving opportunity for women and their newborns through providing health promotion, disease prevention, and early diagnosis and treatment of pregnancy-related health issues. However, systematically synthesised evidence on factors influencing the quality of ANC services is lacking. This scoping review aims to systematically synthesize the factors influencing in provision and utilisation of quality ANC services. METHODS: We conducted a scoping review of published evidence on the quality of ANC services. We searched records on four databases (PubMed, Scopus, Embase, and Google scholar) and grey literature from 1 to 2011 to 30 August 2021. We analysed data using Braun and Clarke’s thematic analysis approach. We followed Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) guideline for the review. We explained themes using the Donabedian healthcare quality assessment model (input-process-output). RESULTS: Several inputs- and process-related factors contributed to suboptimal quality of ANC in many low and lower- or middle-income countries. Input factors included facility readiness (e.g., lack of infrastructure, provision of commodities and supplies, health workforce, structural and intermediary characteristics of pregnant women, and service delivery approaches). Processes-related factors included technical quality of care (e.g., lack of skilled adequate and timely care, and poor adherence to the guidelines) and social quality (lack of effective communication and poor client satisfaction). These input and process factors have also contributed to equity gaps in utilisation of quality ANC services. CONCLUSION: Several input and process factors influenced the provision and utilization of optimum quality ANC services. Better health system inputs (e.g., availability of trained workforces, commodities, guidelines, context-specific programs) are essential to creating enabling facility environment for quality ANC services. Care processes can be improved by ensuring capacity-building activities for workforces (training, technical support visits), and mentoring staff working at peripheral facilities. Identifying coverage of quality ANC services among disadvantaged groups could be the initial step in designing and implementing targeted program approaches. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12884-022-05331-5.