A comprehensive evaluation of water, sanitation, and hygiene (WASH) in Health Facilities: A Systematic Review and meta-analysis

Abstract

Despite global recognition, WHO reports reveal significant gaps, with one in four healthcare facilities lacking basic water services, affecting over 1.8 billion people, and 21% lacking sanitation services, impacting 1.5 billion people, especially prevalent in low- and middle-income countries (LMICs). This study aimed to critically evaluate the current state of WASH facilities across a diverse range of healthcare settings. This review includes various databases such as PubMed, MEDLINE, EMBASE, CINAHL, Scopus, and grey literature, eligible studies employing various designs were scrutinized for WASH infrastructure and practices. Methodological quality was rigorously evaluated using the QuADS checklist. Data analysis, performed with R software, involved deriving pooled estimates of WASH intervention effects. Sensitivity analyses were conducted, employing statistical methods like funnel plots to ensure robustness and mitigate biases. Out of 13,250 articles screened, 18 were included in this review. Meta-analyses revealed significant effect sizes for WASH interventions across domains- water (67.38%), sanitation (53.93%), waste management (40.82%), environment (56.58%), hygiene (66.83%), and management (42.30%). Widespread disparities in Water, Sanitation, and Hygiene (WASH) persist across healthcare facilities (HCFs), with rural areas facing notable deficits. Challenges in water quality, sanitation, and waste management demand comprehensive, multi-sectoral approaches for improvement.