676 responses were received, including partial responses where the respondent dropped out before completing the full survey (539 complete responses were received).
Daeth cyfanswm o 676 o ymatebion i law, gan gynnwys ymatebion rhannol lle rhoddodd yr ymatebydd y gorau iddi cyn cwblhau’r arolwg llawn (cafwyd 539 o ymatebion cyflawn).