Overall, the report released on Monday last week showed a statewide improvement in public hospital treatment times in the period from October to December 2012.

In Dubbo's emergency department, the median wait time for emergency cases was eight minutes, urgent cases took 21 minutes, semi-urgent cases waited for 23 minutes and the median wait time for non-urgent cases was 18 minutes.

This represents an improvement from the same period in 2011, when the median treatment time of urgent cases was 31 minutes, semi-urgent was 33 minutes and non-urgent was 28, although emergency treatment times remained steady at eight minutes.

From October to December 2012, the NSW median wait time was eight minutes for emergency, 21 minutes for urgent, 29 minutes for semi-urgent and 27 minutes for non-urgent.

Another key indicator, the percentage of patients leaving the emergency department within four hours, has risen to 64 per cent in NSW, compared to 59 per cent on the same period in 2010.

At Dubbo Base Hospital, the figure was 57 per cent.

Dubbo Base was also below the NSW average when it came to elective surgery, with 82 per cent of elective surgery patients at Dubbo being treated on time, compared to a state average of 93 per cent.

Bathurst and Orange performed above the state average with 98 per cent and 97 per cent respectively.

While waiting times for urgent and semi-urgent procedures at Dubbo Base were better than the state average, the median waiting time for non-urgent procedures was 319 days, compared to the state average of 224 days.

Health Minister Jillian Skinner congratulated the state's public hospitals on their improved performance.

"Our state's hospitals are performing better than ever before when it comes to timely, quality patient care - this is wonderful news," Mrs Skinner said.