Wrth chwilio am wybodaeth am gwestiwn iechyd penodol, bydd y pyramid tystiolaeth yn helpu i bennu pa ddarnau o dystiolaeth sydd o’r ansawdd gorau.
Gellir lawrlwytho’r pyramid tystiolaeth mewn taflen esboniadol neu fel delwedd. Gellir cael gafael arno drwy Xerte gan ddilyn y ddolen View.
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