Work on measuring progress towards this is ongoing through the National Survey for Wales, however the survey does not provide robust LSOA estimates as required in WIMD.
Mae gwaith ar fesur cynnydd tuag at hyn yn mynd rhagddo drwy Arolwg Cenedlaethol Cymru, ond nid yw'r arolwg yn rhoi amcangyfrifon cadarn fel sy'n ofynnol ym MALlC.