Table 6.
Family background characteristics of intact and separated African ancestry families, by quintile of predicted probability of parental separation.
| Predicted Probability of Parental Separation |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0-20%ile | 21-40%ile | 41-60%ile | 61-80%ile | >80%ile | ||||||
| Intact (n = 25) | Separated (n = 15) | Intact (n = 14) | Separated (n = 25) | Intact (n = 8) | Separated (n = 33) | Intact (n = 6) | Separated (n = 31) | Intact (n = 0) | Separated (n = 44) | |
| Paternal alcoholism, n (%) | 6 (24) | 1 (7) | 0 (0) | 1 (4) | 1 (13) | 3 (9) | 0 (0) | 2 (6) | -- | 21 (48) |
| Maternal alcoholism, n (%) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | -- | 9 (20) |
| Maternal smoking, n (%) | 16 (64) | 11 (73) | 13 (93) | 19 (76) | 6 (75) | 21 (63) | 3 (50) | 17 (55) | -- | 27 (61) |
| Maternal age at twins’ birtha, n (%) | ||||||||||
| < 20 | 1 (4) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 1 (3) | 2 (33) | 13 (42)† | -- | 19 (43) |
| 20-24 | 2 (8) | 4 (27) | 4 (29) | 5 (20) | 6 (75) | 14 (42)† | 2 (33) | 16 (52)† | -- | 13 (30) |
| ≥ 35 | 1 (4) | 1 (7) | 0 (0) | 0 (0) | 1 (13) | 2 (6) | 0 (0) | 1 (3) | -- | 0 (0) |
| Paternal educational attainmentb, n (%) | ||||||||||
| < 12 years | 2 (8) | 0 (0) | 3 (21) | 3 (12) | 0 (0) | 10 (30) | 3 (50) | 8 (26) | -- | 13 (30) |
| ≥ 13 years | 20 (80) | 14 (93) | 5 (36) | 9 (36) | 1 (13) | 3 (10) | 0 (0) | 1 (3) | -- | 13 (30) |
Note. Within quintile, intact and separated families differ significantly at
*p < .05
†
p < 0.10.
a
Reference group = ages 25-34.
b
Reference group = 12 years.