Once again, women were more likely to perform this behaviour than men, with 72% doing so within the last 12 months compared with 68% of men.
Unwaith eto, roedd menywod yn fwy tebygol o berfformio'r ymddygiad hwn na dynion, gyda 72% yn gwneud hynny o fewn y 12 mis diwethaf o gymharu â 68% o ddynion.