As figures are based on three-year rolling averages, this means that for FYE 2023, estimates of material deprivation are not strictly comparable with the pre-pandemic period.
Mae hyn yn golygu bod amcangyfrifon a gyfrifwyd gynt fel cyfartaleddau treigl 3 i 5 mlynedd yn seiliedig ar gyfartaleddau treigl 2 i 4 blynedd sy'n hepgor data arolwg FYE 2021.