2025 Volume 61 Issue 1 Pages 120-125
The WHO recommends the Robson 10-Group Classification System（RTGCS）, which classifies deliveries into 10 groups based on five parameters, for the purpose of evaluating cesarean section rates and comparing with other facilities. In this study, we classified 1,100 deliveries at our hospital using the RTGCS, calculated the number and rate of cesarean sections for each group, and compared them with previous reports from regional perinatal maternal and child medical centers. In our hospital, the cesarean section rate was higher than in other facilities in the group of primiparas who delivered a single fetus in vertex presentation after 37 weeks and multiparas who delivered spontaneously through labor. Our hospital performs vaginal deliveries after cesarean section, and the cesarean section rate was significantly lower in cases of single pregnancy after a previous cesarean section in which the fetus was delivered in vertex presentation after 37 weeks.
This is the first report to compare the results of using the RTGCS between facilities of the same size in Japan. Further comparative studies of RTGCS in Japan will require multicenter collaborative studies that examine in detail the factors leading to cesarean section in each group.
