. Author manuscript; available in PMC: 2015 Jul 1.

Published in final edited form as: Scand J Econ. 2014 Mar 10;116(3):838–858. doi: 10.1111/sjoe.12060

Table 1.

Estimated Gompertz–Makeham mortality parameters

	Birth cohort 1901	Birth cohort 1951	Birth cohort 1996
ρ × 100	0.195** (0.045)	–0.134 (0.078)	–0.171** (0.065)
a × 100	0.103** (0.004)	0.059** (0.005)	0.051** (0.004)
b	0.075** (0.0005)	0.080** (0.001)	0.079** (0.001)
N	80	80	80
R ²	0.999	0.997	0.997

Notes: Based on mortality rates at ages 20–100 from the Berkeley Mortality Database. Mortality at later ages for the 1951 cohort and at all ages for the 1996 cohort are projected. ***, **, and * denote significance at the 1, 5, and 10 per cent levels, respectively.