It is suggested that this is down to the inability to collect robust data, but as this is not an issue for other services, this is another area the service should consider progressing.
Awgrymir bod hyn yn deillio o’r anallu i gasglu data cadarn, ond gan nad yw hyn yn broblem i wasanaethau eraill, mae hwn yn faes arall y dylai’r gwasanaeth ystyried ei ddatblygu.