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About the MATR
MATR + Research
Why study twins?
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MATR Info for Twins
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Zygosity information
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INFORMATION FOR RESEARCHERS
MATR Statistics
As of 08/31/2009
Age of MATR Registrants
Frequency
00 to 18
4,154
18 to 20
1,015
21 to 30
4,564
31 to 40
3,783
41 to 50
4,510
51 to 60
4,066
61 to 70
2,576
70+
5,467
Total
30,135