. Author manuscript; available in PMC: 2009 Apr 30.

Published in final edited form as: Mech Ageing Dev. 2007 Nov 4;128(11-12):706–716. doi: 10.1016/j.mad.2007.10.013

Table 2. Mortality decomposition analysis.

The diagonal entries in bold, show the mean lifespan (in days ± standard error) for each genotype analyzed. The entries (in days) above the diagonal show the amount of the difference in longevity (explained in the methods) that is accounted for by variation in the slope (b) or the ‘rate of aging’ of the Gompertz model of aging. The entries (in days) below the diagonal show the amount of the difference in longevity that is accounted for by variation in the intercept (a) or the ‘initial mortality rate’ of the Gompertz model. An entry that contributes the most towards the observed effect in the variation has been italicized for comparison. Most observed variation between the populations analyzed has been due to differences in slope rather than the intercept.

		Variation due to effects of slope (b) (rate of aging)
		KG06854^R	Sod2ⁿ²⁸³^/+	Sod2^wk/wk	Sod2^n283/wk
Variation due to effects of intercept (a) (Initial mortality rate)	KG06854^R	50.37 ±0.7	−7.45	−11.63	−20.53
	Sod2ⁿ²⁸³^/+	−1.62	41.49 ±0.4	−3.87	−12.52
	Sod2^wk/wk	0.52	1.82	39.63 ±0.5	−8.88
	Sod2^n283/wk	1.00	2.04	0.46	31.12 ±0.3