The research was conducted jointly by a team led by professor Park Byung-joo of preventive medicine at the Seoul National University College of Medicine and the faculty of Boston Children's Hospital. The researchers took data from 7,400 children who were given antimicrobial drugs at least once in the six nations from 2008-2012.

The next highest prescription rate was in Spain (1.55 times), Italy (1.5 times), the US (1.06 times), Germany (1.04 times) and Norway (0.45 times).

Another notable finding was that the prescription of the most basic antibiotic, penicillin, was the lowest in South Korea at 9.8 percent. By comparison, penicillin prescriptions accounted for as high as 64.8 percent in Norway. This finding signifies that resistance to penicillin has already grown widely in South Korea and patients now require more potent antibiotics.

"The misuse of antibiotics is said to be decreasing in South Korea, but the latest research results show that it is still serious in the country compared with advanced Western nations," Park said. "Doctors and patients alike have to change their thinking about using antibiotics."

Antibiotics, although not effective against bacteria-caused infections like the cold or flu, are commonly prescribed for such illnesses in South Korea. The antibiotics prescription rate for colds in 2014 was 44 percent in the country. (Yonhap)