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Table 1 Parameter estimates for quantitative trait segregation analyses of age-adjusted sbp

From: Segregation analysis comparing liability and quantitative trait models for hypertension using the Genetic Analysis Workshop 13 simulated data

Model

Allele frequency

Dominance

Displacement

Heritability

2lnLA

Number of parameters

Sporadic

(-)

(-)

(-)

(0)

0

0

Polygenic

(-)

(-)

(-)

0.78

2203.63

1

Single genes

      

   Dominant

0.30

(1)

1.71

(0)

1237.16

2

   Recessive

0.73

(0)

1.76

(0)

1248.84

2

   Codominant

0.51

0.51

3.39

(0)

1899.80

3

Mixed models

      

   Dominant

0.23

(1)

0.00

0.78

2203.63

3

   Recessive

0.13

(0)

1.74

0.80

2230.07

3

   Codominant

0.13

0.07

1.85

0.80

2230.74

4

2-locus model

      

   Locus 1

0.56

0.56

3.88

   

   Locus 2

0.22

0.32

3.81

(0)

2279.30

6

2-locus mixed model

      

   Locus 1

0.53

0.59

3.20

   

   Locus 2

0.19

0.26

3.31

0.41

2339.49

7

  1. ATwice log likelihood difference from sporadic model. Parameters in parentheses fixed.