Welsh NHS waiting times: 'Why is there such a discrepancy?'
The Welsh government's decision to cut NHS funding may be responsible for longer waiting times, a report has claimed.
However the study suggests performance has improved in other areas and there is no evidence that Wales is "lagging behind" any other part of the UK.
The research - comparing England, Scotland, Wales and Northern Ireland - shows a significant deterioration in Welsh waiting times since 2009.
This was during an "unprecedented squeeze" on finances.
NHS nurse Athena Williams went private for a hip replacement because of the time she had to wait.
She spoke to Wales correspondent Hywel Griffith.