A New Zealand study has found information that could change international asthma treatment practices and guidelines.
Using technology developed in New Zealand to track patients, the study found new 'Smart' combination inhalers prevented asthma attacks more than the two inhalers doctors usually prescribe.
Medical Research Institute director Professor Richard Beasley, who was part of the research team, said the technology allowed an insight and knowledge greater than any study before it.
Professor Beasley said the evidence could change the management of asthma worldwide.
The study was published in The Lancet medical journal this week.