Table 1 Degree of relatedness in the 20,032 GS:SFHS data and number of pair-wise relationships

From: Genomic analysis of family data reveals additional genetic effects on intelligence and personality

Matrix

Number of non-zero off-diagonal entries

 GRMg

200,630,496

 GRMkin

41,174

 SRMFamily

20,115

 SRMSibling

1767

 SRMCouple

8495

Degree of relationship

Number of pairs

 1st degree

18,320

 2nd degree

7851

 3rd degree

4129

 4th degree

3950

 5th degree

11,032

 Unrelated individuals

200,585,162

  1. For the G matrix all off-diagonal entries are non-zero
  2. The distance of the relationship is identified using SNP relatedness and according to approximate ranges of the expected pair-wise relatedness, 0.5i−0.5 to 0.5i+0.5 for ith degree relatives
  3. Unrelated individuals defined as more than 5th degree relatives r ≤ 0.022
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