Contribution of private health services to universal health coverage in low and middle-income countries: Factors affecting the use of private over public health services in Vietnam.

The private sector's contribution to Universal health coverage (UHC) has been increasingly recognised by policymakers in low- and middle-income countries. This study aimed to identify service-provider and consumer-level factors affecting choice of private over public health services in Vietnam. A concurrent mixed-method design was adopted. A quantitative phase explored consumers' health service choice by analysing data from a random national sample of 10,354 individuals aged 16 and over. The qualitative phase investigated how private and public providers organise their services to influence consumer choices by conducting interviews with policymakers, hospital and clinic managers, and health practitioners. The combined results demonstrate that at the individual level, absence of any type of health insurance was the factor most closely associated with the use of private services. Private health services were more likely to be used by people from ethnic majority groups compared to ethnic minorities (odds ratio [OR]: 1.6, 95% CI: 1.4-2.0), and by people living in urban compared to rural areas (OR: 1.1, 95% CI: 1.0-1.3). The service providers suggested that consumers opted for private services that were perceived to have poorer quality in the public sector, such as counselling, physical therapy and rehabilitative care. Additional motivational factors include the private sector's more flexible working hours, shorter waiting times, flexible pricing of services, personalised care and better staff behaviour. The findings can inform national health system planning and coordination activities in Vietnam and other countries that aim to harness the attributes of both the public and private sectors to achieve UHC.