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Table 1 Affected sib pairs compared to other groups: Univariate model

From: Morphological features in a Xhosa schizophrenia population

Variable

% Abnormal

Chi-square

P

Group*

1

2

3

4

  

N

46

17

37

44

  

Epicantus

10.9

23.5

24.3

31.0

5.65

0.130

Low set ears

35.6

29.4

30.6

17.9

2.85

0.415

Adherent earlobes

26.2

31.3

33.3

65.1

13.94

0.003

sSibs vs grp 2

    

0.37

0.543

sSibs vs grp 3

    

0.86

0.353

sSibs vs grp 4

    

12.59

0.0004

Malformed ears

9.1

0.0

8.1

2.3

-

-

Palatal abnormalities

48.6

41.7

36.0

96.3

19.13

0.0003

sSibs vs grp 2

    

0.10

0.750

sSibs vs grp 3

    

0.69

0.407

sSibs vs grp 4

    

15.29

0.0001

Tongue abnormalities

10.3

11.1

17.9

19.5

1.71

0.635

5 th finger variations

17.8

25.0

21.6

18.6

0.35

0.950

Transverse palmar crease

2.2

0.0

2.8

7.0

-

-

Third toe abnormalities

0.0

0.0

0.0

0.0

-

-

Syndactalia

19.6

6.3

25.0

18.6

3.86

0.277

Asymmetrical ears

9.1

17.7

32.4

2.3

12.68

0.005

sSibs vs grp 2

    

0.64

0.422

sSibs vs grp 3

    

6.51

0.011

sSibs vs grp 4

    

2.25

0.133

Gap between toes

31.1

20.0

5.6

7.0

7.43

0.059

sSibs vs grp 2

    

0.55

0.460

sSibs vs grp 3

    

6.16

0.013

sSibs vs grp 4

    

5.52

0.019

  1. *Group 1 sib pairs with schizophrenia (sSibs)
  2. Group 2 probands with an affected non-participating sib
  3. Group 3 singleton controls, unaffected
  4. Group 4 sib pairs, unaffected