@misc{oai:repo.qst.go.jp:00070142,
 author = {Doi, Kazutaka and Mieno, Makiko and Shimada, Yoshiya and Yonehara, Hidenori and Yoshinaga, Shinji and 土居 主尚 and 三重野 牧子 and 島田 義也 and 米原 英典 and 吉永 信治},
 month = {May},
 note = {We have conducted a meta-analysis of studies on the excess relative risk per Gy (ERR) of second cancer before, but the small number of eligible studies restricted quantitative evaluations. To solve this problem, a method to calculate ERR per Gy estimates from another form of estimates was developed, and a meta-analysis was conducted again. We searched the PubMed database, and 26 studies were identified. ERR per Gy estimates were available in 15 studies, and for rest 11 studes, we used the regression model to calculate ERR per Gy estimates from other estimates. The overall ERR per Gy estimate was 0.61 (95% CI: 0.31, 1.2), which was much lower than that of atomic bomb survivors exposed as young children (1.7; 95%CI: 1.1, 2.5). Heterogeneity of the ERR per Gy estimates among studies was suggested, and the reasons were explored. It was suggested that ERR per Gy estimates in the different SMN sites differed greatly, and they also decreased to 0.88 time by one year increase in primary cancer age. The heterogeneity could be explained by the SMN sites and primary cancer age to some extent., The Third Asian and Oceanic Congree on Radiation Protection},
 title = {Meta-Analysis of Second Cancer Risk after Radiotherapy among Childhood Cancer Survivors},
 year = {2010}
}