The number of patient pathways waiting more than 36 weeks has increased since the start of the COVID-19 pandemic, reaching the highest level on record in November 2020.
Mae nifer y llwybrau cleifion sydd wedi bod yn aros mwy na 36 wythnos wedi cynyddu ers dechrau pandemig COVID-19, gan gyrraedd y lefel uchaf erioed ym mis Tachwedd 2020.