More than 100 doctors were considering quitting general practice because of changes that would boost the roles of nurses and allied professionals, a survey has shown.

The national survey of 359 general practitioners found 39 per cent of those polled were considering early retirement because of ''issues currently in the reform spotlight''.

Forty per cent were severely stressed by the plans, while almost three-quarters said the Federal Government's 31 Super Clinics would not deliver greater access to GPs or after-hours services.

The survey was conducted by the Medical Observer magazine.

Central to the Federal Government's program is a national primary-care strategy, which would place more emphasis on nurses and allied health professionals.

The Super Clinics would provide a one-stop shop for health-care needs. But more than one-third of GPs polled believed the clinics would lower the quality of patient care.

Australian General Practice Network chairman Tony Hobbs said the survey represented less than 2 per cent of GPs. AAP