Table 4.

Statistics for D_l/D_m, D_s/D_m, D_s/D_l, and AER as a function of vessel order

	Dl/Dm		Ds/Dm		Ds/Dl		AER
Order	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Sample Size for the Mother Vessel	Sample Size for the Larger Daughter Vessel	Sample Size for the Smaller Daughter Vessel
−1	0.834	0.174	0.628	0.149	0.769	0.164	1.114	0.322	193	193	177
−2	0.862	0.153	0.619	0.136	0.722	0.167	1.173	0.308	156	165	149
−3	0.879	0.170	0.546	0.152	0.637	0.187	1.115	0.318	135	137	127
−4	0.784	0.233	0.469	0.198	0.626	0.222	0.887	0.316	833	892	656
−5	0.833	0.255	0.374	0.184	0.475	0.232	0.881	0.318	3,354	3,627	2,617
−6	0.934	0.251	0.313	0.180	0.288	0.157	1.030	0.347	3,391	3,496	2,849
−7	0.989	0.238	0.270	0.173	0.209	0.117	1.122	0.362	1,999	1,919	1,765
−8	1.023	0.240	0.248	0.174	0.172	0.097	1.168	0.360	896	816	801
−9	1.014	0.227	0.189	0.141	0.132	0.079	1.123	0.323	297	257	265
−10	1.007	0.248	0.218	0.153	0.149	0.078	1.094	0.331	65	57	55
−11	1.015	0.159	0.248	0.211	0.175	0.101	1.117	0.298	54	53	58
−12	1.062	0.395	0.252	0.198	0.139	0.073	1.123	0.182	7	7	5

D_l/D_m, larger daughter-to-mother vessel diameter ratio; D_s/D_m, smaller daughter-to-mother vessel diameter ratio; D_s/D_l, smaller daughter-to-larger daughter vessel diameter ratio; AER, area expansion ratio. AER is defined as follows: (D{l2} + D{s2})/D{m2}, where D_s, D_l, and D_m are the diameters of the smallest daughter vessel, largest daughter vessel, and mother vessel, respectively.