描述Twin Study Structural ACE model.png |
You can reproduce this in graphviz as follows
digraph G {
splines="FALSE";
/* entities */
Twin1 [label="Twin1", shape=box]
Twin2 [label="Twin2", shape=box]
A1 [label="A"]
C1 [label="C"]
E1 [label="E"]
A2 [label="A"]
C2 [label="C"]
E2 [label="E"]
/* relationships */
A1 -> Twin1 [label="37.2"]
C1 -> Twin1 [label="1.9 "]
E1 -> Twin1 [label="5.0"]
A1 -> A2 [dir=both label="1 / 0.5"]
C1 -> C2 [dir=both label="1"]
A2 -> Twin2 [label="37.2"]
C2 -> Twin2 [label="1.9"]
E2 -> Twin2 [label="5.0"]
/* ranks */
{ rank=max; Twin1; Twin2}; /* max is bottom */
{ rank=min; A1; C1; E1; A2; C2; E2;}; /* max is bottom */
}
/* Danish male data (a representative population of eight independent multinational cohorts reported in Silventoinen et al (2003)
Reference: K. Silventoinen, S. Sammalisto, M. Perola, D. I. Boomsma, B. K. Cornes, C. Davis, L. Dunkel, M. De Lange, J. R. Harris, J. V. Hjelmborg, M. Luciano, N. G. Martin, J. Mortensen, L. Nistico, N. L. Pedersen, A. Skytthe, T. D. Spector, M. A. Stazi, G. Willemsen and J. Kaprio. (2003). Heritability of adult body height: a comparative study of twin cohorts in eight countries. Twin Research, 6, 399-408. 10.1375/136905203770326402 */ |