For this period all figures in the release were totals for the other six Health Boards in Wales, though data for Cwm Taf up to August 2018 were available on StatsWales.
Mae'r holl ddata arall sydd wedi’u crynhoi yma yn cael eu casglu oddi wrth fyrddau iechyd lleol gan Wasanaeth Gwybodeg GIG Cymru.