Heterogeneous effects of national health insurance scheme on healthcare utilisation: evidence from Ghana

Purpose - This paper aims to evaluate Ghana's National Health Insurance Scheme (NHIS) on healthcare utilisation by exploring its heterogeneous effects based on residential status and wealth. Design/methodology/approach - The study used the Ghana Socioeconomic Panel Survey (GSPS) datasets. An instrumental variable strategy, specifically the two-stage residual inclusion (2SRI), was employed to control endogenous NHIS membership. Findings - Generally, the results show that NHIS improves healthcare utilisation (i.e. visits to a health facility and formal care). Concerning the heterogeneous effects of health insurance on healthcare utilisation, the results revealed that NHIS members are more likely to seek care, irrespective of their residence status. The results further indicate that the probability of visiting a health facility and utilising formal care increases for the poorest NHIS participants. Based on these, the authors conclude that NHIS provides equitable healthcare access and utilisation for its vulnerable populations, who are beneficiaries. Originality/value - To the best of the authors' knowledge, this paper is the first to explore the heterogeneous effects of NHIS on healthcare utilisation across residential and income subpopulations. Splitting the dataset by residential status to examine healthcare utilisation inequality is worthwhile. In addition, analysing utilisation in terms of health care type would show whether Ghana's NHIS may be viewed as welfare-enhancing through increased formal health care utilisation. Peer review - The peer review history for this article is available at:https://publons.com/publon/10.1108/IJSE-05-2023-0330