NSW surgeons praise bottleshop closures

There's been a "dramatic downturn" in assaults since a NSW-wide ban on takeaway alcohol sales after 10pm.

Dr John Crozier from the Royal Australasian College of Surgeons said the measures introduced in February last year have resulted in a nine per cent drop in serious violence across the state.

"For every one assault requiring a police call out, there are tens of assaults that go unreported so this simple, reasonable, not draconian, not curfew measure is a tremendous gain," Dr Crozier told AAP.

Dr Crozier said doctors from St Vincent's Hospital have seen a dramatic reduction in serious alcohol-related injury in the emergency department.

"From police, ambulance, nurses and doctors who pick up the pieces it has been a tremendous transformation.

"This is a stark contrast to the years and years of evidence of alcohol related injuries, before the introduction of very reasonable measures."

Liquor Stores Association NSW said the ban is under review in regional NSW with metropolitan areas to be evaluated early next year.

The lockout laws, introduced in the wake of the deaths of teenagers Thomas Kelly and Daniel Christie, also require most licensed premises in central Sydney and Kings Cross to refuse entry to patrons from 1.30am and stop serving alcohol at 3am.