Age, sex and disability are not discussed below as precision was suitable in single year data, however pooling increased this further, and this is discussed within the main report.
Ni thrafodir oedran, rhyw ac anabledd isod gan bod y manwl gywirdeb yn addas mewn data un flwyddyn; fodd bynnag fe wnaeth cyfuno data gynyddu hyn ymhellach, ac fe drafodir hyn yn y prif adroddiad.