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. Author manuscript; available in PMC: 2014 Aug 12.
Published in final edited form as: Psychometrika. 2012 Dec 8;78(3):441–463. doi: 10.1007/s11336-012-9304-2

Table 4.

The covariance matrices for skinfold measures on twins.

MZ twin pairs (nMZ = 84)
DZ twin pairs (nDZ = 33)
BIC1 SSC1 BIC2 SSC2 BIC1 SSC1 BIC2 SSC2
BIC1 0.1285 0.1538
SSC1 0.1270 0.1759 0.1999 0.3007
BIC2 0.0982 0.1069 0.1233 0.0435 0.0336 0.1782
SSC2 0.0999 0.1411 0.1295 0.1894 0.0646 0.0817 0.2095 0.3081

BIC = bicep; SSC = subscapular.