The Liquor Stores Association of New South Wales wants the 10:00pm ban on takeaway alcohol sales relaxed but is being opposed by trauma surgeons who say there has been a significant fall in alcohol-related violence since the measures.

The Association has made its case in a submission to the Office of Liquor Gaming and Racing, which is reviewing the law.

The Office is examining the impact of the ban on alcohol-related violence and the business of venues licensed to sell takeaway alcohol.

It is looking first at the situation in regional NSW.

The Association wants all regional bottle shops to have an automatic right to trade until midnight 12 times a year.

It also called for regional retailers to be able to apply for an exemption from the ban.

The Association's executive director, Michael Waters, criticised the current rule as a "one size fits all" solution.

"We do question whether the blanket measure was necessary in the first place," Mr Waters said.

"Given that the vast majority of liquor stores did not typically trade beyond 10:00pm prior to the restriction, we are not advocating for a complete wind-back."

The ban was introduced in January 2014 as part of a raft of measures to combat alcohol-related violence.

The Royal Australasian College of Surgeons wants the ban maintained, citing a significant fall in assaults requiring a police call-out since it was introduced.

Dr John Crozier, who chairs the trauma committee at the college, said the measures were not draconian.

"I think most people acknowledge they're pretty reasonable - why would you want to undo the gains that have been so reasonably achieved?" Dr Crozier said.

Chief crime statistician Dr Don Weatherburn said assaults were down 9 per cent between February and December last year as a result of the ban and other restrictions on drinking.

"It's helped reduce assaults across the state as a whole outside the Sydney entertainment precinct," he said.