Figure 9
The visualization presents a keyword co-occurrence network map created using “V O S viewer”, featuring multiple colored clusters connected by curved linking lines. Near the center, two large, prominent nodes labeled “universal health coverage” and “health insurance” serve as major hubs, connecting to numerous surrounding terms. The cluster on the left includes nodes such as “health financing”, “thailand”, “health technology assessment”, and “healthcare reform”. The blue cluster at the bottom center contains terms like “ghana”, “ethiopia”, “health care utilization”, “inequality”, “children”, and “ireland”. To the right, a cluster features “health policy”, “affordable care act”, “access”, “usa”, “health”, “uninsured”, and “healthcare”. Toward the top, a cluster links “india”, “health systems”, “covid-19”, and “health disparities”. A smaller cluster on the far right includes “affordability”, “accessibility”, “long-term care”, and “health services”. Additional nodes visible in the network include “equity”, “health care”, “financial burden”, “access to care”, and “china”. The nodes vary in size based on occurrence frequency, and the curved lines illustrate the strength of relationships between these research concepts. .Co-occurrence network. Source(s): Authors’ compilation using VOSviewer