Table 1.

Estimated age-specific absolute excess mortality rates and standardized mortality ratios for respiratory causes of death, Maricopa County^a

	1957		1958		1959
Age Group (yrs)	Excess mortality rate/10,000 population	SMR	Excess mortality rate/10,000 population	SMR	Excess mortality rate/10,000 population	SMR
All ages	0.00	1.17	0.00	1.01	1.80	1.31
<5	0.00	0.95	0.00	0.85	0.75	1.04
5–14	0.22	4.06	0.16	1.37	0.38	3.28
15–24	0.19	1.16	0.70	1.88	0.00	0.81
25–44	0.08	1.24	0.23	1.40	0.38	1.40
45–64	0.72	1.23	1.01	1.02	2.48	1.32
≥65	2.52	1.18	0.00	0.99	16.59	1.36

^aAbsolute excess mortality rates/10,000 population based a cyclical Serfling linear regression model and weekly respiratory mortality rates during the three expected pandemic waves: October 1, 1957-March 31, 1958 (1957), October 1, 1958-June 30, 1959 (1958), and October 1, 1959-June 30, 1960 (1959)