Abstract
To construct large scale database for clinical perinatal research, Clinical Obstetric Information Network (COIN) started in 1996.
1. Participants were 40 national hospitals (Fukuyama, Hamada, Hirosaki, IMCJ, Kanazawa, Kasumigaura, Kobe, Kochi, Kumamoto, Kure, Kyoto, Kyushu MC, Maizuru, Matsumoto, Miechuo, Mito, Miyakonojo, Nagano, Nagasaki-chuo, Nagoya, Nara, Narashino, NCVC, Okayama, Okura, Osaka, Osaka-minami, Otake, Saga, Sagamihara, Sendai, Shibukawa, Shimonoseki, Takasaki, Tochigi, Tokyo MC, Tosei, Yamanaka, Yokohama, Zentsuji) in 2000.
2. Total mothers were 16, 299 cases, 1, 601 (9.8%) of those were preterm deliveries. Maternal transfer were 1, 034 cases (6.3%), postpartum hemorrhage were 4, 259 cases (26.1%), and blood transfusion were 74 cases (0.5%). Maternal mortality rate was 6.0 (per 100, 000 live births).
3. Total neonates were 16, 606 cases, 1, 637 (9.9%) of those were preterm between 28-36 weeks, and 109 cases (0.7%) were between 22-27 weeks. Early neonatal death were 41 cases, mortality rate was 2.5 (per 1, 000 live births). Fetal death after 22 weeks were 90 cases, rate was 5.4 (per 1, 000 total births). Perinatal mortality rate was 7.8 (per 1, 000 total births).
