令和元年,人口動態統計,, 上巻 乳児死亡 第6.4表 生存期間別にみた性・年次別乳児死亡率(出生10万対) 注:2004・2006・2009〜2017年(平成16・18・21〜29年)の都道府県からの報告漏れ(2019年3月29日公表)による再集計を行ったことにより、2017年(平成29年)以前の報告書とは数値が一致しない箇所がある。 ,,1950,1955,1960,1965,1970,1975,1980,1985,1990,1995,2000,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019 総数 ,総   数 ,6011.3,3975.3,3069.2,1850.2,1313.8,1004.7,750.9,551.8,459.7,425.8,321.7,278.4,262.1,259.5,256.4,238.9,228.7,234.4,221.6,212.2,207.3,190.5,197.4,186.2,190.3,191.2 , 4週未満 ,2744,2233,1703.7,1165.8,865.6,679.1,494.4,343,260.2,220.3,176.9,142.1,132.2,131.6,122,117.2,108.9,109.2,102.7,99.6,94.9,89.7,89.5,88,87.2,87.3 ,  1週未満 ,1505.2,1307,1061,819.7,662.3,538.8,390.3,261,191.3,154.3,127.6,102.7,96.4,96.5,88.8,81.7,82,78.4,76.2,73,70.8,66.1,69.3,66.2,66.9,66.8 ,   1日(24時間)未満 ,360.3,335.2,271.2,236.7,219.1,213.3,178.1,130.7,103.6,84.7,75.6,65,58.9,61.8,58.7,54.5,55.3,52.2,54.5,49.1,47.4,44.9,45.1,47.2,46.2,46.3 ,  1週以上2週未満,565.6,470.7,341.3,189.7,115.3,77.8,57.1,42.3,30.9,30.3,23.3,19,15,15.6,14.8,15.5,11.2,14.5,10,10.3,10.1,11.4,9.5,8.5,6.9,9.2 ,  2週以上3週未満,401.2,276.5,180.3,95.7,53.1,39,28.2,21.7,22.3,19.9,15,11.7,11.7,10.3,10.9,11.3,8.8,9.8,8.7,9,6.8,5.8,5.7,7.8,6.8,7.1 ,  3週以上4週未満,272.1,178.8,121.1,60.6,34.8,23.5,18.8,18,15.6,15.8,11.1,8.8,9.1,9.2,7.5,8.7,7,6.5,7.8,7.3,7.2,6.4,5,5.6,6.8,4.2 , 4週以上3か月未満 ,1265.1,763.5,565.7,266.5,154.4,113.5,89.5,72.9,74,74.2,54.3,45.3,46.5,44,47.5,42.1,41.8,42,41.6,40,39.5,34.4,38.4,33.7,39.1,35.4 , 3か月以上6か月未満 ,825.4,473.6,390.5,189.7,133.3,95.8,78.4,64.8,62.9,65.1,42.9,45.1,40.5,41,42.7,38.8,37.7,39,34.7,36.8,34.7,33.7,33.8,31.1,31.9,32.4 , 6か月以上9か月未満 ,608.3,290.8,241.5,133,93.8,67.3,49.6,39.4,37.2,39,30.5,26.3,26.6,27.1,26.4,24.6,22.6,28.5,26,22.2,23.5,19.9,22.5,20.3,20.1,21.8 , 9か月以上1年未満 ,566.9,214.5,167.8,95.2,67.1,49,39,31.7,25.4,27.1,17.1,19.7,16.4,15.8,17.9,16.3,17.6,15.8,16.7,13.5,14.7,12.8,13.2,13.1,12,14.3 男 ,総   数 ,6337.5,4229.4,3360.2,2065.7,1474.1,1120.9,832.4,589.2,498.1,461.4,344.2,301.1,277.6,274,265.9,262.5,246,235.8,229.8,226.1,215.3,202.1,195.2,192,197.9,201.2 , 4週未満 ,2949.4,2404.8,1884.7,1316.6,992.5,772.1,557.3,367.9,281.8,241.1,187.7,151,139.5,136.5,126.2,128.4,119.3,107.9,101.9,107.5,98.7,93.5,89,95.2,90.7,94.7 ,  1週未満 ,1636.3,1434.6,1187.1,941.4,769.1,613.3,444.8,281.1,211,168.4,137.1,111.6,101.2,99.3,90.3,90.7,92.2,77.7,76.9,78.6,72.3,69.5,68.9,71.8,68.8,73.3 ,   1日(24時間)未満 ,389.9,376.7,298.1,274.3,248.4,238.2,201.7,135.6,111.5,90.5,81.2,68.8,60,63.1,57.7,62.3,61.4,51.8,54.2,52.9,48.7,47.7,46.4,51,46.9,49.4 ,  1週以上2週未満,593,488.2,372.4,199.5,128.5,89.5,62.1,44.9,31.7,34.7,23.7,16.9,16.8,17.1,16.1,16,10.7,14.5,11.1,11.2,11.2,10.9,9.8,10.1,7.2,12.2 ,  2週以上3週未満,429,291.3,195.7,105.3,54.6,43.9,30.4,23.7,24.1,20.9,15.8,12.7,12.1,11.3,10.9,12.8,9.1,8.9,8.3,9.5,7.8,6.8,5.4,7.6,6.6,6.1 ,  3週以上4週未満,291.2,190.7,129.5,70.3,40.3,25.4,20,18.2,15,17.1,11.1,9.9,9.5,8.8,8.9,8.9,7.3,6.9,5.6,8.1,7.4,6.4,5,5.6,8.1,3.2 , 4週以上3か月未満 ,1322.7,792.8,609.5,295.4,167.2,119.2,96.5,73,80.7,79,57.3,50.3,48.5,49.7,51.7,49,46.8,42,44.4,43,38.8,35.7,37.1,34.1,39.1,36.3 , 3か月以上6か月未満 ,862.5,499.8,421.6,206.6,141.1,105.7,88.5,72.4,66.5,70,49.5,50.6,42.1,45.2,44.9,42.3,37.4,40.7,36.9,37.7,37,38.4,32.5,30.5,36.1,34.1 , 6か月以上9か月未満 ,629.6,301.6,261.3,143.8,101.6,69.5,51,42.3,41.8,42.2,32.2,26.8,29.6,28.2,25.7,26,23.1,29.2,31,23.7,26,22.1,24.1,19.6,19.5,22.6 , 9か月以上1年未満 ,571.7,230.3,183.2,103.4,71.7,54.4,39.1,33.6,27.3,29.1,17.5,22.4,17.8,14.5,17.5,16.8,19.4,16,15.6,14.2,14.7,12.4,12.5,12.6,12.5,13.5 女 ,総   数 ,5665.4,3706.6,2762,1623.3,1142.1,881.2,664.6,512.3,419.3,388.2,297.9,254.5,245.8,244.2,246.4,214,210.3,233,213.1,197.5,198.8,178.3,199.7,180.2,182.3,180.7 , 4週未満 ,2526.3,2051.2,1512.6,1006.9,729.5,580.3,427.7,316.7,237.5,198.4,165.5,132.8,124.4,126.4,117.6,105.4,98,110.4,103.5,91.4,90.8,85.7,90.1,80.6,83.6,79.4 ,  1週未満 ,1366.2,1172.1,927.8,691.5,547.8,459.7,332.5,239.8,170.5,139.5,117.6,93.3,91.3,93.6,87.3,72.2,71.1,79.2,75.4,67.1,69.3,62.6,69.7,60.2,64.8,60.0 ,   1日(24時間)未満 ,328.9,291.3,242.7,197.1,187.6,186.8,153,125.5,95.4,78.5,69.7,61.1,57.9,60.4,59.6,46.3,48.8,52.7,54.8,45.2,46.1,42,43.8,43.3,45.4,43.1 ,  1週以上2週未満,536.6,452.2,308.6,179.3,101.2,65.4,51.9,39.6,30.1,25.8,22.8,21.3,13.2,14,13.4,15,11.7,14.4,8.9,9.4,8.8,12,9.3,6.7,6.5,6.2 ,  2週以上3週未満,371.7,260.8,164,85.7,51.6,33.8,25.9,19.5,20.5,18.8,14,10.6,11.3,9.2,10.9,9.8,8.5,10.7,9.1,8.6,5.7,4.7,6.1,8,6.9,8.1 ,  3週以上4週未満,251.9,166.1,112.3,50.4,28.9,21.4,17.5,17.7,16.3,14.3,11.1,7.5,8.6,9.6,6,8.4,6.7,6,10.1,6.4,7,6.3,5.1,5.6,5.4,5.2 , 4週以上3か月未満 ,1204,732.4,519.5,236.1,140,107.6,82,72.7,66.9,69.1,51.2,40,44.3,38.1,43.1,34.7,36.5,41.9,38.6,36.8,40.2,33,39.8,33.4,39.1,34.4 , 3か月以上6か月未満 ,786,445.9,357.6,171.9,124.9,5.3,67.8,56.9,59,60,36,39.2,38.7,36.6,40.4,35.1,38,37.3,32.4,35.8,32.2,28.8,35.1,31.6,27.5,30.6 , 6か月以上9か月未満 ,585.7,279.3,220.7,121.7,85.6,64.9,48.1,36.3,32.5,35.6,28.7,25.7,23.5,25.9,27.1,23,22.1,27.7,20.8,20.7,20.9,17.5,20.8,21,20.8,21.1 , 9か月以上1年未満 ,561.8,197.7,151.5,86.7,62.1,43.2,38.9,29.7,23.4,25.1,16.6,16.8,14.8,17.2,18.2,15.7,15.8,15.6,17.8,12.7,14.8,13.3,13.9,13.6,11.4,15.2