Table 7. Segregation analysis of EC in an extended pedigree of Taihang.

Parametera	Dominant	Recessive	Codominant	Descending	Polygenic	No Major type	Environmental	General
qA	0.34	0.36	0.272	0.363	0.545	-	0.540	0.72
τAA	1.0	1.0	1.0	1.0	-	-	0.540	0.84
τAB	0.5	0.5	0.5	0.5	-	-	0.540	0.51
τBB	0	0	0	0	-	-	0.540	0.17
βAA	−9.11	−9.94	−9.83	−9.460	−22.157	−9.48	−18.540	−18.06
βAB	−9.11	−35.04	−12.74	−54.531	−30.343	−9.48	−24.527	−24.01
βBB	−33.76	−35.04	−48.79	−55.911	−36.176	−9.48	−29.698	−542.31
α	0.157	0.163	0.204	0.163	0.488	0.151	0.405	0.386
γ	1b	1b	1b	1b	0.275	0.13	0.175	1b
χ2	0.541	3.482	3.525	3.482	4.9	14.409	11.224
Df	4	4	3	3	3	6	5
P value	0.969	0.481	0.317	0.323	0.179	0.025	0.047
-2lnL	330.628	333.569	333.612	333.569	334.987	344.496	341.311	330.087
AIC	342.628	345.569	347.612	347.569	348.987	352.496	351.311	350.087

-: Parameter at this value is not estimated.

a: See Materials and Methods for definitions of the parameters.

b: Parameter estimate went to bound.