Table 7 (online).
Heritability estimates of BPD stratifying the primary study population by race: Caucasian vs. Non-Caucasian. MC = monochorionic, DC = dichorionic
| Race | Chorionicity | Number in Twin Pairs Affected | ACE modeling Percent of Variability (95% CI) |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Neither | One | Both | Total | χ2 | p | ICC (95% CI) | p | %A (Heritability) |
p | %C (Common Environmental) |
p | ||
| Caucasian | MC | 18 | 13 | 11 | 42 | 0.15 | .93 | 0.36 (0.06,0.61) |
.80 | 0.0% (0.0%, 53.6%) |
1.0 | 58.6% (18.6%, 71.9%) |
.011 |
| DC | 60 | 37 | 33 | 130 | 0.41 (0.24,0.55) |
||||||||
| Total | 78 | 50 | 44 | 172 | |||||||||
| Non-Caucasian | MC | 3 | 6 | 4 | 13 | 2.23 | .33 | 0.07 (−0.42,0.53) |
.34 | 0.0% (0.0%, 68.6%) |
1.0 | 47.9% (0.0%, 69.7%) |
.06 |
| DC | 28 | 19 | 15 | 62 | .36 (0.11,0.57) |
||||||||
| Total | 31 | 25 | 19 | 75 | |||||||||