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Table 5 Hierarchical model of headache type in child, psychiatric comorbidity in child, headache familial recurrence and psychiatric disorders in parents

From: Psychiatric disorders and headache familial recurrence: a study on 200 children and their parents

Headache type in child

Psychiatric comorbidity in child

Psychiatric disorders in parents

Frequency

Parameter estimatea

SE

z value

P

Absent

1

−1.70

0.39

−4.35

<0.001

2

−4.62

0.92

−5.04

<0.001

3

−0.92

0.20

−4.65

<0.001

Present

1

−1.56

0.38

−4.06

<0.001

2

−4.37

0.90

−4.86

<0.001

3

0.00

   

Migraine

1

1.46

0.36

4.10

<0.001

2

2.64

0.81

3.27

<0.001

3

1.03

0.24

4.31

<0.001

oHs

1

0.00

   

2

0.00

   

3

0.00

   

Absent

1

0.45

0.36

1.24

=0.21

2

1.61

0.62

2.60

<0.01

3

0.06

0.28

0.23

=0.82

Present

1

0.00

   

2

0.00

   

3

0.00

   

Migraine

Absent

−0.91

0.32

−2.82

<0.01

Present

0.00

   

oHs

Absent

0.00

   

Present

0.00

   
   

Constant

2.70

0.22

12.51

<0.001

  1. aAliased (or redundant) parameters are set to zero and are used as contrast values for z tests