Having a National Qualification Level 4 or higher qualification was the only factor that showed an increased proportion of people reporting this as their main reason, with 18%.
Meddu ar Gymhwyster Cenedlaethol Lefel 4 neu uwch oedd yr unig ffactor a ddangosodd gyfran uwch o bobl yn dweud mai hwn oedd eu prif reswm, gyda 18%.