Complex sentence: Vhi Healthcare claims to have 1.55 million members which represents 40% of the population-or 80% of the private health insurance market-its main rival in the market is BUPA Ireland.
Split into simpler sentences: Vhi Healthcare claims to have 1.55 million members which represents 40% of the population or 80% of the private health insurance market. Its main rival in the market is BUPA Ireland.