Table 3.

Scaling coefficients and exponents (mean ± s.d.) of the length–volume scaling law in coronary arterial trees of mice at different ages. mean ± s.d., a and K_{length–volume} were averaged over all coronary arterial trees in each age group.

least-squares fit of both and a (two-parameter model)
length–volume scaling law		a	R2
one week	797 ± 603	0.73 ± 0.09	0.96 ± 0.04
three weeks	818 ± 701	0.75 ± 0.08	0.93 ± 0.04
six weeks	1071 ± 795	0.73 ± 0.06	0.94 ± 0.03
12 weeks	782 ± 451	0.74 ± 0.05	0.94 ± 0.02
five to six months	883 ± 708	0.74 ± 0.06	0.96 ± 0.02
more than eight months	1131 ± 792	0.76 ± 0.08	0.94 ± 0.03

least-squares fit of with a = 3/4 (one-parameter model)
length–volume scaling law		R2	statistical difference (p < 0.05)
one week	712 ± 133	0.96 ± 0.04	1 w versus 6 w 1 w versus >8 m 3 w versus 6 w 3 w versus >8 m 6 w versus 12 w 6 w versus 5–6 m 12 w versus >8 m
three weeks	681 ± 265	0.93 ± 0.04
six weeks	1070 ± 215	0.94 ± 0.03
12 weeks	776 ± 180	0.94 ± 0.02
five to six months	814 ± 224	0.96 ± 0.02
more than eight months	925 ± 256	0.94 ± 0.03