Household type showed a greater number of differences from the national average for buying or receiving second-hand items than were found for selling or donating second-hand items.
Roedd y math o aelwyd yn dangos mwy o wahaniaethau o'r cyfartaledd cenedlaethol ar gyfer prynu neu dderbyn eitemau ail-law nag a ganfuwyd ar gyfer gwerthu neu roi eitemau ail-law.