Between July 2021 and January 2022, around 2,000 survey participants were asked to complete an additional online section after they had completed the telephone section.
Rhwng mis Gorffennaf 2021 a mis Ionawr 2022, gofynnwyd i tua 2,000 o ymatebwyr yr arolwg i gwblhau adran ar-lein ychwanegol ar ôl iddynt orffen yr arolwg dros y ffôn.