TABLE I.
Demographic Characteristics of Patients With Isolated Posterior Urethral Valves As Compared to a Random Sample of New York State Male Live-Births
| PUV patients (n = 56) | NY state male births (n = 3,916) | P-value | |
|---|---|---|---|
| Maternal age years, n (%) | 0.5 | ||
| <20 | 7 (12.5) | 333 (8.5) | |
| 20–34 | 39 (69.6) | 2868 (73.2) | |
| ≥35 | 10 (17.9) | 715 (18.3) | |
| Maternal race/ethnicity, n (%) | 0.4 | ||
| Non-Hispanic White | 28 (50.0) | 2259 (57.8) | |
| African American | 12 (21.4) | 706 (18.1) | |
| Hispanic | 13 (23.2) | 646 (16.5) | |
| Asian/other | 3 (5.4) | 298 (7.6) | |
| Maternal education years, n (%) | 0.3 | ||
| <12 | 14 (25.5) | 660 (17.0) | |
| 12 | 14 (25.5) | 1138 (29.4) | |
| >12 | 27 (49.1) | 2080 (53.6) | |
| Nulliparous, n (%) | 22 (39.3) | 1613 (41.2) | 0.9 |
| Maternal smoking, n (%) | 3 (5.4) | 375 (9.6) | 0.4 |
| Maternal prepregnancy BMI kg/m2, n (%) | 0.7 | ||
| ≤24.9 | 20 (58.8) | 1207 (56.4) | |
| 25–29.9 | 9 (26.5) | 506 (23.6) | |
| ≥30 | 5 (14.7) | 427 (20.0) | |
| Gestational age weeks, mean (SD) | 37.6 (2.5) | 39.1 (2.3) | <0.001 |
| Birth weight g, mean (SD) | 3204 (676) | 3393 (596) | 0.02 |
| Low birth weight, n (%) | 10 (17.9) | 243 (6.2) | 0.002 |
| SGA, n (%) | 10 (18.2) | 431 (11.6) | 0.1 |
BMI, body mass index; SGA, small for gestational age.
Data missing for NY state male births on maternal smoking: 8, alcohol: 10, race/ethnicity: 7, education: 38, BMI: 1776, gestational age: 182, SGA: 184. Among the missing SGA, two infants born <22 weeks gestation were not coded since the Kramer et al. reference cut-off points start at 22 weeks gestation.
Data missing for PUV patients on maternal education: 1, BMI: 22, gestational age: 1.