A total of 43 tools remained and reviewed with regards to their validity, reliability, useability, impact and cost to determine their value as a screening tool.
Arhosodd ac adolygwyd cyfanswm o 43 o offer o ran eu dilysrwydd, eu dibynadwyedd, eu defnyddioldeb, eu heffaith a'u cost i bennu eu gwerth fel offeryn sgrinio.