Table 1.

Rockefeller Series: Mortality Rate by Age of Admission

Age at first admission to Rockefeller Hospital (years)	Number of patients	Percent known dead as of February 1918
0-9	8	75%
10-19	14	71%
20-29	14	64%
30-39	16	38%
40-49	13	31%
50+	11	18%