<p>The Wikipedia article seems to provide a summary of this information with links to the primary literature</p>

<p><a href="http://en.wikipedia.org/wiki/Causes_of_schizophrenia#Genetics" rel="nofollow">http://en.wikipedia.org/wiki/Causes_of_schizophrenia#Genetics</a></p>

<blockquote>
  <p>Concordance rates between monozygotic twins vary in different studies,
  approximately 50%; whereas dizygotic twins was 17%. Some twin
  studies (Koskenvuo et al; Hoeffer et al) have found rates as low as 11.0%–13.8% among
  monozygotic twins, and 1.8%–4.1% among dizygotic twins, however.</p>
</blockquote>

<h3>References</h3>

<ul>
<li>Koskenvuo M, Langinvainio H, Kaprio J, Lönnqvist J, Tienari P; Langinvainio; Kaprio; Lönnqvist; Tienari (1984). "Psychiatric hospitalization in twins". Acta Genet Med Gemellol (Roma) 33 (2): 321–32. PMID 6540965.</li>
<li>Hoeffer A, Pollin W; Pollin (November 1970). "Schizophrenia in the NAS-NRC panel of 15,909 veteran twin pairs". Arch Gen Psychiatry 23 (5): 469–77. doi:10.1001/archpsyc.1970.01750050085012. PMID 5478575.</li>
</ul>

CC BY-SA 3.0
2014-12-08T03:35:09.850Z
2014-12-08T03:35:09.850Z
Jeromy Anglim
<p>You could check out the <a href="http://match.ctglab.nl/#/home" rel="nofollow noreferrer">Meta-Analysis of Twin Correlations and Heritability (MATCH) website</a> which is fully interactive and searchable. </p>

<p>The following image is a screenshot from their results on Schizophrenia, which shows that generally the concordance (here reported as correlation) of diagnosis between MZ twins is generally quite a bit higher than across DZ twins:</p>

<p><a href="https://i.sstatic.net/j4CkC.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/j4CkC.png" alt="all = both sexes; ss = same sex; m = male; f = female; mz = monozygotic; dz = dizygotic; dos = ?"></a></p>

CC BY-SA 3.0
2016-06-19T14:42:18.017Z
2016-06-19T14:42:18.017Z
Abraham Nunes
<p>What is general level of concordance for twins and is it higher for monozygotic twins?
What research is available on this?</p>

<abnormal-psychology><genetics><nature-nurture><twin-study>
What is the concordance rate for schizophrenia in monozygotic and dizygotic twins?
No Name
# What is the concordance rate for schizophrenia in monozygotic and dizygotic twins?

(Asked by: username_0 on 2014-12-08)

What is general level of concordance for twins and is it higher for monozygotic twins?
What research is available on this?

**Tags:** abnormal-psychology, genetics, nature-nurture, twin-study


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## 2 answers

### Answer by username_1 on 2014-12-08. Score: 2

The Wikipedia article seems to provide a summary of this information with links to the primary literature

<http://en.wikipedia.org/wiki/Causes_of_schizophrenia#Genetics>

> Concordance rates between monozygotic twins vary in different studies,
> approximately 50%; whereas dizygotic twins was 17%. Some twin
> studies (Koskenvuo et al; Hoeffer et al) have found rates as low as 11.0%–13.8% among
> monozygotic twins, and 1.8%–4.1% among dizygotic twins, however.

### References

* Koskenvuo M, Langinvainio H, Kaprio J, Lönnqvist J, Tienari P; Langinvainio; Kaprio; Lönnqvist; Tienari (1984). "Psychiatric hospitalization in twins". Acta Genet Med Gemellol (Roma) 33 (2): 321–32. PMID 6540965.
* Hoeffer A, Pollin W; Pollin (November 1970). "Schizophrenia in the NAS-NRC panel of 15,909 veteran twin pairs". Arch Gen Psychiatry 23 (5): 469–77. doi:10.1001/archpsyc.1970.01750050085012. PMID 5478575.


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### Answer by username_2 on 2016-06-19. Score: 0

You could check out the [Meta-Analysis of Twin Correlations and Heritability (MATCH) website](http://match.ctglab.nl/#/home) which is fully interactive and searchable.

The following image is a screenshot from their results on Schizophrenia, which shows that generally the concordance (here reported as correlation) of diagnosis between MZ twins is generally quite a bit higher than across DZ twins:

[![all = both sexes; ss = same sex; m = male; f = female; mz = monozygotic; dz = dizygotic; dos = ?](https://i.sstatic.net/j4CkC.png)](https://i.sstatic.net/j4CkC.png)


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