People rating their agreement that the things they do in their life are worthwhile as 9 out of 10 or higher were less likely to report loneliness.
Roedd pobl a roddodd sgôr o 9 allan o 10 neu uwch ar gyfer y datganiad 'cytuno'n gryf bod pethau mewn bywyd yn werth chweil' yn llai tebygol o adrodd am unigrwydd.