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Relative number νx of deceased male and female children between 1 and x years according to 1871–1994 German (A), 202 combined 1871–1994 German, 1891–1990 Japanese, and 1780–1995 Swedish lifetables (B) and between 1 and x mo according to 210 infant male and female 1891–1995 Swedish lifetables (C). In A and B, νx = [ℓn(N1/N10)]−1 ℓn(N1/Nx); in C, νx = (N1 − Nx)/(N1 − N12). Solid lines are ℓn x/ℓn 10 in A and B and ℓn x/ℓn 12 in C. Each data point (a cross) corresponds to a lifetable.
