Table 2.
Distribution of study population characteristics by HLA sharing status
| Na | Matched HLA-A (%) |
Matched HLA-B (%) |
Matched HLA-C (%) |
Matched HLA-DRB1 (%) |
Matched HLA-DQB1 (%) |
|
|---|---|---|---|---|---|---|
| Overall | 218 | 12.8 | 8.3 | 17.9 | 13.3 | 25.7 |
| Maternal age | ||||||
| 19–24 | 56 | 7.4 | 1.8 | 14.3 | 12.5 | 17.9# |
| 25–29 | 97 | 15.3 | 9.3 | 15.5 | 5.0 | 24.0 |
| 30–34 | 41 | 9.8 | 12.2 | 26.8 | 17.1 | 41.5 |
| ≥ 35 | 24 | 20.8 | 12.5 | 20.8 | 12.5 | 20.8 |
| Maternal BMI | ||||||
| Low/Normal BMI (<25) | 130 | 15.4 | 6.1* | 13.7 | 14.4 | 24.6 |
| Overweight (<30) | 46 | 10.9 | 17.8 | 23.9 | 10.9 | 21.7 |
| Obese (≥30) | 40 | 7.5 | 2.5 | 25.0 | 10.0 | 30.0 |
| Maternal education | ||||||
| High school or lower | 33 | 0.0* | 5.7 | 11.4 | 8.6 | 14.3 |
| Some college | 79 | 19.0 | 9.0 | 17.9 | 12.7 | 24.4 |
| ≥ College degree | 104 | 12.5 | 7.7 | 20.1 | 14.4 | 29.1 |
| Race | ||||||
| White | 202 | 13.9 | 13.3 | 18.3 | 11.3* | 22.9* |
| Non-white | 14 | 0.0 | 7.4 | 13.3 | 33.3 | 53.3 |
| Prior pregnancies | ||||||
| None | 153 | 13.2 | 9.1 | 18.3 | 14.9 | 27.4 |
| Prior with same father | 31 | 9.7 | 6.4 | 16.1 | 6.4 | 23.3 |
| Prior with different father | 21 | 19.1 | 5.0 | 19.1 | 14.3 | 23.8 |
| Smoked in pregnancy? | ||||||
| No | 173 | 12.7 | 9.2 | 17.8 | 13.8 | 25.4 |
| Yes | 43 | 13.9 | 2.3 | 18.6 | 9.1 | 23.3 |
a
χ2 p values <0.05 are bolded
*
p<0.05
#
p<0.10