No. of child Percentage of children Death rates expressed in according to born alive who died before relative figures corrected for sequence of reaching their 20th year. differences in the death rates birth. in families differing in size. ============ ========================== ============================== [N] [T] [N] [T] ===== ===== ===== ===== 1 33.9 40.6 90.5 91.3 2 37.4 44.4 101.0 99.5 3 49.4 45.4 109.0 103.5 4 40.1 47.9 105.0 103.0 5 39.5 49.7 101.0 104.0 6 43.5 52.5 103.0 107.0 7 39.0 51.2 92.0 105.0 8 43.2 54.1 96.0 111.5 9 50.8 59.1 101.0 115.0 10 40.2 60.2 101.0 113.5 11-12 50.0 51.7 101.0 97.0 13-18 64.4 52.8 111.0 107.0 Maternal family. No. of child Percentage of children Death rates expressed in according to born alive who died before relative figures corrected for sequence of reaching their 20th year. differences in the death rates birth. in families differing in size. ============ ========================== ============================== [N] [T] [N] [T] ===== ===== ===== ===== 1 34.6 40.0 92.0 87.0 2 36.5 46.6 96.0 97.0 3 40.6 49.0 107.0 104.0 4 41.7 57.1 107.0 111.0 5 37.6 50.3 91.0 104.0 6 41.8 53.8 97.5 108.0 7 51.3 52.5 116.0 107.0 8 45.9 54.0 102.0 111.0 9 51.1 52.5 100.0 103.0 10 47.6 53.8 100.0 103.0 11-12 47.1 60.0 103.0 130.0 13-18 68.8 62.5 121.0 104.0 Figure C 55.] [Illustration: Relative Mortality of the First and Last-born. 3,129 Tuberculous and 1,830 Non-Tuberculous Families of Stuttgart, 1873-1889 (after Weinberg) Of each 100 living-born there died before reaching their 20th year: