Ar gyfer wardiau meddygol a llawfeddygol acíwt i oedolion, Lefelau Gofal Cymru yw'r unig adnodd sy'n bodloni'r diffiniad yng Nghymru ar hyn o bryd. Felly, nodwyd bod yn rhaid i bob bwrdd iechyd ei ddefnyddio fel rhan o'r broses cyfrifo lefelau staff o 6 Ebrill 2018 ymlaen. Datblygwyd adnodd Lefelau Gofal Cymru dros gyfnod o ddwy flynedd fel rhan o broses ailadroddus a ofynnodd i filoedd o nyrsys o bob rhan o'r wlad gasglu data er mwyn creu'r sail dystiolaeth angenrheidiol mewn lleoliad clinigol yng Nghymru. Roedd yn bosibl profi a datblygu adnodd Lefelau Gofal Cymru yng Nghymru o fewn cyfnod cymharol fyr gan fod adnodd ag algorithm sicr eisoes ar waith mewn sawl rhan o'r DU – yr Adnodd Gofal Nyrsio Diogelach – yr oeddem wedi gallu ei ddefnyddio fel sylfaen i adeiladu arni.
For adult acute medical and surgical wards, the Welsh Levels of Care (WLOC) is deemed to be the sole tool that meets the definition in Wales at this time and was therefore prescribed to all health boards for use as part of the staffing calculation process from 6 April 2018 onwards. The WLOC tool was developed over a two year iterative process with thousands of Welsh nurses collecting data across the entire country to create the necessary evidence base in a Welsh clinical setting. The testing and development the WLOC tool in Wales was possible within a relatively short time period because there was a tool with a well-tested algorithm already in place in many parts of the UK that we were able to use as a foundation to build on – The Safer Nursing Care Tool.