Around 2,000 people from the full survey sample took part in a short online survey following completion of the telephone element for July 2021 to January 2022.
Cymerodd tua 2,000 o bobl o sampl lawn yr arolwg ran mewn arolwg ar-lein byr ar ôl cwblhau’r elfen ffôn ar gyfer Gorffennaf 2021 i Ionawr 2022.