Well over a third had been dependent on substances (most commonly alcohol, followed by heroin) for most of their adult lives, and most of these had been unemployed for a similar period.
Roedd mwyafrif helaeth y staff (84%) rhwng 26 a 60 oed, wedi'u dosbarthu'n fras yn yr un modd dros bob band oedran pum mlynedd o fewn yr ystod oedran hon.