Number and percentage of women who had an initial assessment carried out by 10 completed weeks of pregnancy, by health board providing the service (StatsWales)
Nifer a chanran y menywod a gafodd asesiad cychwynnol 10fed wythnos gyflawn eu beichiogrwydd, yn ôl y bwrdd iechyd sy'n darparu'r gwasanaeth (StatsCymru)