Research Paper Volume 8, Issue 11 pp 3045—3064
On the heterogeneity of human populations as reflected by mortality dynamics
Figure 4. Model of heterogeneous population composed of three subpopulations fitted to averaged 1890-1900 cohort death rates for ages over 80 for Japanese female (A) and Japanese male (B) populations. The dots represent the observed central death rates, while the exponential mortality dynamics of the subpopulations are shown by the dashed lines and the mortality dynamics of the entire population are shown by the black solid lines. Note that the plots are shown on a semi-logarithmic scale.