Males were more likely to have been referred by school-based and other education staff (60% of all male referrals), compared with 55% of all female referrals.
Roedd gwrywod yn fwy tebygol o fod wedi cael eu hatgyfeirio gan staff ysgol a staff addysg eraill (60% o'r holl atgyfeiriadau gwrywaidd), o’I gymharu â 55% o'r holl atgyfeiriadau benywaidd.