Table 4.
Probable familial relationships identified in NHANES 1999–2002.
| NHANES 1999–2002 | Duplicate/MZ twin | First degree | Second degree | Third degree | ||
|---|---|---|---|---|---|---|
| Parent-offspring | Full-siblings | |||||
| NHW | PLINK | <5 | 274 | <5 | 59,792 | 222,720 |
| KING | <5 | 7 | 37 | 12,029 | 116,259 | |
| NHB | PLINK | <5 | 493 | 5 | 29,575 | 77,841 |
| KING | <5 | 41 | 126 | 23,695 | 144,230 | |
| MEX | PLINK | <5 | 180 | 23 | 40,559 | 160,322 |
| KING | <5 | 31 | 140 | 15,397 | 126,031 | |
The numbers represent counts of individual pairs such that an individual can be in multiple pairings. Data are counts where possible (CDC data use agreement requires any count(s) <5 to be suppressed for confidentiality concerns). NHW, non-Hispanic white; NHB, non-Hispanic black; MEX, Mexican American; MZ, monozygotic.