Those who reported a having a condition that doesn't affect day-to-day activities, or reported having no condition are defined as non-disabled.
Mae'r rhai a nododd fod ganddynt gyflwr nad yw'n effeithio ar weithgareddau pob dydd, neu a nododd nad oes ganddynt unrhyw gyflwr yn cael eu diffinio fel rhai nad ydynt yn anabl.