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Table 1 Annual live births, live births with low birth weight (LBW: birth weight < 2500 g), and LBW proportions (LBWp) in Japan stratified by exposure status of prefectures; see Table 3 and Fig. 2; Table 1 excludes 3774 live births (including 197 LBWs, 5.2%) to Japanese parents in foreign countries; see https://www.mhlw.go.jp/english/database/db-hw/vs01.html

From: Spatiotemporal association of low birth weight with Cs-137 deposition at the prefecture level in Japan after the Fukushima nuclear power plant accidents: an analytical-ecologic epidemiological study

Year 5 highly contaminated prefectures Fukushima, Miyagi, Ibaraki, Tochigi, Iwate 5 moderately contaminated prefectures Yamagata, Saitama, Tokyo, Kanagawa, Chiba 37 slightly contaminated prefectures with ISO codes 1, 2, 5, 10, 15 to 47 Total
live births LBW LBWp live births LBW LBWp live births LBW LBWp live births LBW LBWp
1995 103,490 7869 0.0760 311,160 23,216 0.0746 772,147 58,016 0.0751 1,186,797 89,101 0.0751
1996 104,322 7550 0.0724 315,799 23,712 0.0751 786,132 59,611 0.0758 1,206,253 90,873 0.0753
1997 102,020 7899 0.0774 312,979 24,415 0.0780 776,360 61,502 0.0792 1,191,359 93,816 0.0787
1998 103,271 8165 0.0791 315,199 25,278 0.0802 784,388 64,157 0.0818 1,202,858 97,600 0.0811
1999 101,549 8349 0.0822 310,282 25,817 0.0832 765,596 64,989 0.0849 1,177,427 99,155 0.0842
2000 102,092 8825 0.0864 315,728 27,073 0.0857 772,517 66,980 0.0867 1,190,337 102,878 0.0864
2001 100,806 8672 0.0860 311,095 26,595 0.0855 758,563 67,600 0.0891 1,170,464 102,867 0.0879
2002 98,515 8614 0.0874 311,474 28,049 0.0901 743,671 67,641 0.0910 1,153,660 104,304 0.0904
2003 95,674 8576 0.0896 304,896 27,602 0.0905 722,870 66,133 0.0915 1,123,440 102,311 0.0911
2004 93,692 8608 0.0919 303,562 28,218 0.0930 713,291 67,995 0.0953 1,110,545 104,821 0.0944
2005 89,016 8258 0.0928 292,414 27,402 0.0937 680,930 65,601 0.0963 1,062,360 101,261 0.0953
2006 90,578 8495 0.0938 303,268 28,632 0.0944 698,652 67,421 0.0965 1,092,498 104,548 0.0957
2007 89,317 8528 0.0955 304,808 28,714 0.0942 695,533 67,913 0.0976 1,089,658 105,155 0.0965
2008 88,826 8394 0.0945 307,184 29,090 0.0947 694,973 66,986 0.0964 1,090,983 104,470 0.0958
2009 86,431 8053 0.0932 304,949 28,711 0.0942 678,556 65,905 0.0971 1,069,936 102,669 0.0960
2010 85,459 8214 0.0961 305,933 28,864 0.0943 679,787 65,960 0.0970 1,071,179 103,038 0.0962
2011 81,576 7808 0.0957 299,020 28,129 0.0941 670,088 64,433 0.0962 1,050,684 100,370 0.0955
2012 80,622 7885 0.0978 296,914 28,026 0.0944 659,628 63,399 0.0961 1,037,164 99,310 0.0958
2013 80,672 8087 0.1002 298,278 28,081 0.0941 650,812 62,454 0.0960 1,029,762 98,622 0.0958
2014 78,704 7643 0.0971 294,105 27,341 0.0930 630,665 60,778 0.0964 1,003,474 95,762 0.0954
2015 78,014 7543 0.0967 297,591 27,429 0.0922 630,019 60,229 0.0956 1,005,624 95,201 0.0947
2016 74,931 7280 0.0972 289,991 26,874 0.0927 611,991 57,925 0.0947 976,913 92,079 0.0943
2017 72,500 6989 0.0964 281,503 25,974 0.0923 592,011 56,388 0.0952 946,014 89,351 0.0944
2018 69,184 6656 0.0962 275,332 25,345 0.0921 573,845 54,266 0.0946 918,361 86,267 0.0939
Total 2,151,261 192,960 0.0897 7,263,464 648,587 0.0893 16,743,025 1,524,282 0.0910 26,157,750 2,365,829 0.0904
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