Impact of Bison Slaughter on Height of Bison-Reliant Native Americans

Difference in height-for-age z-score between bison-reliant
and non-reliant nations, relative to the 1871 birth cohort

The graph is an event-study chart titled, “Impact of Bison Slaughter on Height of Bison-Reliant Native Americans.” The chart plots estimates of the difference in the height-for-age z-score between bison-reliant and non-reliant nations, relative to the 1871 birth cohort. The y-axis ranges from -3 to 1, and the x-axis ranges from the 1851 birth cohort to the 1891 birth cohort. The 1876 birth cohort z-score differential is -1.63, and the 1891 birth cohort differential is -1.77. Source: Researchers' calculations using data from Franz Boas’ sample of Native American statures

The horizontal axis represents birth cohorts. The blue shaded region represents the 90% confidence interval.

Source: Researchers' calculations using data from Franz Boas' sample of Native American statures