Although there have been some concerns that patients might suffer from having such doctors in training -- medical school graduates known as residents -- operate on them, the findings show that health problems and death related to surgery were unrelated to the seniority of the surgeon.
"The important thing is to train future surgeons and to make it safe during the process, and it looks like (the hospital in the study) has figured out how to do that," said Dr. Matthew Hutter, a surgeon and the director of the Codman Center for Clinical Effectiveness in Surgery at the Massachusetts General Hospital, who was not involved in this study.
Previous research has looked at the impact of the so-called "July effect" -- the time of year when doctors-in-training begin their residencies.
The fear has been that being admitted to the hospital in July could mean worse care by an inexperienced physician, and while some studies have found evidence for that, others have not (see Reuters Health report of September 14, 2011).
Patients sometimes ask not to be operated on by a resident, said Dr. Leon Graat, a resident surgeon at St. Elisabeth Hospital in Tilberg, The Netherlands, who led the study.
"It made me wonder if residents do underperform or if it is only in the mind of the patient that only experienced doctors can take good care of them," Graat told Reuters Health by email.
'SHOULD HAVE NO HESITATION'
To answer the question, he and his colleagues looked back on the medical records of all patients who had their appendices removed at his hospital between 2000 and 2009.
Appendectomies are useful to study because it is one of the first surgeries performed by residents, Graat said, and at his hospital appendectomies are usually assigned to residents unless one is not available. Surgeons remove more than 320,000 per year in the U.S., according Graat and his co-authors.
Of the more than 1,400 patients included in the study, 23 percent had their appendices removed by a staff surgeon, also called an attending, a doctor who has finished all his or her training.
The rest of the surgeries were performed by residents; half of whom were supervised by a staff surgeon, and the other half were done independently.