Professor Molly Courtenay and a team from the University of Surrey spoke to 41 diabetes patients of nurse prescribers.
The researchers explored patients' views of nurse prescribing and the perceived advantages and disadvantages.
'Nurse prescribing increased efficiency and patients were confident with nurse prescribing,' Professor Courtenay said.
'Views varied with regard to the extent patients felt nurses should work autonomously.'
Patients said it was vital that data about changes to treatment was relayed back to GPs.
A second study by the team found nurses were inconsistent in explaining the risks, benefits and side-effects of treatments.