WASHINGTON (Reuters) – A simple checklist to confirm a patient's name, what procedure is to be done, check allergies and count needles and sponges to make sure nothing got left inside halved the rate of surgery-related deaths, doctors reported this week.

The checklist, similar to those used by pilots before every flight, also slashed the rate of complications, the World Health Organisation team reported.

They tested their simple idea with often dubious and unhappy surgical teams operating on more than 7,500 surgical patients in eight hospitals in Toronto, Seattle, London, New Delhi, Amman, Auckland, Manila and Ifakara in Tanzania.

"The death rate was 1.5 percent before the checklist was introduced and declined to 0.8 percent afterward," the team, led by Dr. Atul Gawande of Harvard Medical School in Boston, wrote in the New England Journal of Medicine.

The death rate from surgery itself is about 0.4 percent to 0.8 percent in the developed world and up to 17 percent of patients have major complications. In this study, the rate of complications fell from 11 percent to seven percent.

"Applied on a global basis, this checklist programme has the potential to prevent large numbers of deaths and disabling complications," the international team wrote.

Gawande said the items on such a list may appear to be blindingly obvious, but the process itself of painstakingly checking potential errors can help prevent careless mistakes.

It included checks on anesthesia, blood supply, sterile equipment and drugs, requires double-checks of the site to be operated on and an out-loud roll call of the surgical team.