Table 5.

Polygenic predictors tested on sibling pairs and non-sibling (random) pairs.

Trait	N pairs	$\rho (\mathrm{\Delta }PGS,\mathrm{\Delta }y)$ siblings	$\rho (\mathrm{\Delta }PGS,\mathrm{\Delta }y)$ non-sibling
BMI	21,556	0.271 (0.003)	0.345 (0.005)
Educational attainment	21,352	0.089 (0.001)	0.256 (0.003)
Body fat percentage	20,990	0.245 (0.002)	0.319 (0.001)
Fluid intelligence	4,968	0.165 (0.004)	0.264 (0.005)
Heel bone density	10,133	0.345 (0.001)	0.415 (0.002)
Standing height	21,418	0.545 (0.001)	0.614 (0.001)
Platelet count	20,534	0.393 (0.002)	0.490 (0.002)

First column is number of pairs, second and third are correlation between difference in predicted phenotype and actual phenotype for sibs and non-sibling pairs.